From owner-public@setileague.org Wed Mar 1 06:04:35 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k21E4Zkh013169 for ; Wed, 1 Mar 2006 06:04:35 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id JAA27025 for public-list; Wed, 1 Mar 2006 09:01:39 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f34.bay114.hotmail.com [65.54.169.44]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id JAA27021; Wed, 1 Mar 2006 09:01:37 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 1 Mar 2006 06:01:05 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Wed, 01 Mar 2006 14:01:02 GMT X-Originating-IP: [24.39.94.195] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Cc: bioastro@setileague.org Subject: SETI public: FW: Latest News from the Astrobiology Magazine Date: Wed, 01 Mar 2006 09:01:02 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 01 Mar 2006 14:01:05.0456 (UTC) FILETIME=[9509FB00:01C63D38] Sender: owner-public@setileague.org Precedence: bulk >From: "Astrobiology Magazine" >To: ljk4@msn.com >Subject: Latest News from the Astrobiology Magazine >Date: Wed, 1 Mar 2006 02:33:58 -0800 > >Ecosystem in Suspended Animation? >http://www.astrobio.net/news/article1881.html > >Deeply buried ocean sediments may house populations of tiny organisms that >have extremely low maintenance energy needs and population turnover rates >of anywhere from 200 to 2,000 years, according to an international team of >researchers. > >Noah's Ark on the Moon >http://www.astrobio.net/news/article1880.html > >In the second in our series of 'Gedanken,' or thought experiments, Bernard >Foing suggests that the moon could act as a lifeboat in case Earth is ever >struck down by a major catastrophe. > >PETing Stardust >http://www.astrobio.net/news/article1879.html > >Scientists routinely examine extraterrestrial material that has fallen to >Earth as meteorites, but never before NASA's Stardust mission have they had >access to verified samples of a comet. The leftover debris from the >formation of the solar system 4.5 billion years ago, comets consist mostly >of ice, dust and rock. > >Defining Life >http://www.astrobio.net/news/article1878.html > >For scientists eying distant planets and solar systems for signs of alien >activity, University of Colorado at Boulder Professor Carol Cleland >suggests the first order of business is to keep an open mind. > >Wednesday, March 01 > >------------------------ >For more astrobiology news, visit http://www.astrobio.net > >To unsubscribe, send subject UNSUBSCRIBE to astronaut@astrobio.net > > > > From owner-public@setileague.org Wed Mar 1 13:34:10 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k21LY9UN019326 for ; Wed, 1 Mar 2006 13:34:10 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id QAA09081 for public-list; Wed, 1 Mar 2006 16:30:26 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f29.bay114.hotmail.com [65.54.169.39]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id QAA09077; Wed, 1 Mar 2006 16:30:24 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 1 Mar 2006 13:29:52 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Wed, 01 Mar 2006 21:29:49 GMT X-Originating-IP: [24.39.94.195] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Cc: bioastro@setileague.org Subject: SETI public: 3 papers on circumstellar disks and dust Date: Wed, 01 Mar 2006 16:29:49 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 01 Mar 2006 21:29:52.0754 (UTC) FILETIME=[46F59520:01C63D77] Sender: owner-public@setileague.org Precedence: bulk Astrophysics, abstract astro-ph/0602617 From: Carsten Dominik [view email] Date: Tue, 28 Feb 2006 09:30:48 GMT (195kb) Growth of Dust as the Initial Step Toward Planet Formation Authors: C. Dominik, J. Blum, J. Cuzzi, G. Wurm Comments: Protostars and Planets V (PPV) review. 18 pages, 5 figures We discuss the results of laboratory measurements and theoretical models concerning the aggregation of dust in protoplanetary disks, as the initial step toward planet formation. Small particles easily stick when they collide and form aggregates with an open, often fractal structure, depending on the growth process. Larger particles are still expected to grow at collision velocities of about 1m/s. Experiments also show that, after an intermezzo of destructive velocities, high collision velocities above 10m/s on porous materials again lead to net growth of the target. Considerations of dust-gas interactions show that collision velocities for particles not too different in surface-to-mass ratio remain limited up to sizes about 1m, and growth seems to be guaranteed to reach these sizes quickly and easily. For meter sizes, coupling to nebula turbulence makes destructive processes more likely. Global aggregation models show that in a turbulent nebula, small particles are swept up too fast to be consistent with observations of disks. An extended phase may therefore exist in the nebula during which the small particle component is kept alive through collisions driven by turbulence which frustrates growth to planetesimals until conditions are more favorable for one or more reasons. http://arxiv.org/abs/astro-ph/0602617 Astrophysics, abstract astro-ph/0602619 From: C. P. Dullemond [view email] Date: Tue, 28 Feb 2006 12:55:25 GMT (255kb) Models of the Structure and Evolution of Protoplanetary Disks Authors: C.P. Dullemond, D. Hollenbach, I. Kamp, P. D'Alessio Comments: Review chapter in "Protostars and Planets V" We review advances in the modeling of protoplanetary disks. This review will focus on the regions of the disk beyond the dust sublimation radius, i.e. beyond 0.1 - 1 AU, depending on the stellar luminosity. We will be mostly concerned with models that aim to fit spectra of the dust continuum or gas lines, and derive physical parameters from these fits. For optically thick disks, these parameters include the accretion rate through the disk onto the star, the geometry of the disk, the dust properties, the surface chemistry and the thermal balance of the gas. For the latter we are mostly concerned with the upper layers of the disk, where the gas and dust temperature decouple and a photoevaporative flow may originate. We also briefly discuss optically thin disks, focusing mainly on the gas, not the dust. The evolution of these disks is dominated by accretion, viscous spreading, photoevaporation, and dust settling and coagulation. The density and temperature structure arising from the surface layer models provide input to models of photoevaporation, which occurs largely in the outer disk. We discuss the consequences of photoevaporation on disk evolution and planet formation. http://arxiv.org/abs/astro-ph/0602619 Astrophysics, abstract astro-ph/0602623 From: Mauron [view email] Date: Tue, 28 Feb 2006 17:04:15 GMT (776kb) Imaging the circumstellar envelopes of AGB stars Authors: N.Mauron (1), P.J. Huggins (2) ((1) CNRS & Montpellier Univ., France; (2) New-York Univ., USA) Comments: Accepted by AA 21 Feb 2006; 18 pages, 14 figs; for high resolution images, contact mauron at graal.univ-montp2.fr We report the results of an exploratory program to image the extended circumstellar envelopes of asymptotic giant branch (AGB) stars in dust-scattered galactic light. The goal is to characterize the morphology of the envelopes as a probe of the mass-loss process. The observations consist of short exposures with the VLT and longer exposures with 1-2m telescopes, augmented with archival images from the Hubble Space Telescope. We observed 12 AGB stars and detected the circumstellar envelopes in 7. The detected envelopes have mass loss rates more than about 5 10E-6 solar mass per year, and they can be seen out to distances of about 1 kpc. The observations provide information on the mass loss history on time scales up to about 10,000 years. For the five AGB envelopes in which the circumstellar geometry is well determined by scattered light observations, all except one (OH348.2-19.7) show deviations from spherical symmetry. Two (IRC+10216 and IRC+10011) show roughly spherical envelopes at large radii but asymmetry or bipolarity close to the star; one (AFGL 2514) shows an extended, elliptical envelope, and one (AFGL 3068) shows a spiral pattern. The non-spherical structures are all consistent with the effects of binary interactions. Our observations are in accord with a scenario in which binary companions play a role in shaping planetary nebulae, and show that the circumstellar gas is already partly shaped on the AGB, before evolution to the proto-planetary nebula phase. http://arxiv.org/abs/astro-ph/0602623 From owner-public@setileague.org Thu Mar 2 06:12:09 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k22EC5VQ026492 for ; Thu, 2 Mar 2006 06:12:06 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id JAA05221 for public-list; Thu, 2 Mar 2006 09:01:37 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f26.bay114.hotmail.com [65.54.169.36]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id JAA05217 for ; Thu, 2 Mar 2006 09:01:34 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Thu, 2 Mar 2006 06:01:03 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Thu, 02 Mar 2006 14:01:01 GMT X-Originating-IP: [68.238.91.171] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: 3 papers on circumstellar disks and dust Date: Thu, 02 Mar 2006 09:01:01 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 02 Mar 2006 14:01:03.0275 (UTC) FILETIME=[BE26EFB0:01C63E01] Sender: owner-public@setileague.org Precedence: bulk Astrophysics, abstract astro-ph/0602617 From: Carsten Dominik [view email] Date: Tue, 28 Feb 2006 09:30:48 GMT (195kb) Growth of Dust as the Initial Step Toward Planet Formation Authors: C. Dominik, J. Blum, J. Cuzzi, G. Wurm Comments: Protostars and Planets V (PPV) review. 18 pages, 5 figures We discuss the results of laboratory measurements and theoretical models concerning the aggregation of dust in protoplanetary disks, as the initial step toward planet formation. Small particles easily stick when they collide and form aggregates with an open, often fractal structure, depending on the growth process. Larger particles are still expected to grow at collision velocities of about 1m/s. Experiments also show that, after an intermezzo of destructive velocities, high collision velocities above 10m/s on porous materials again lead to net growth of the target. Considerations of dust-gas interactions show that collision velocities for particles not too different in surface-to-mass ratio remain limited up to sizes about 1m, and growth seems to be guaranteed to reach these sizes quickly and easily. For meter sizes, coupling to nebula turbulence makes destructive processes more likely. Global aggregation models show that in a turbulent nebula, small particles are swept up too fast to be consistent with observations of disks. An extended phase may therefore exist in the nebula during which the small particle component is kept alive through collisions driven by turbulence which frustrates growth to planetesimals until conditions are more favorable for one or more reasons. http://arxiv.org/abs/astro-ph/0602617 Astrophysics, abstract astro-ph/0602619 From: C. P. Dullemond [view email] Date: Tue, 28 Feb 2006 12:55:25 GMT (255kb) Models of the Structure and Evolution of Protoplanetary Disks Authors: C.P. Dullemond, D. Hollenbach, I. Kamp, P. D'Alessio Comments: Review chapter in "Protostars and Planets V" We review advances in the modeling of protoplanetary disks. This review will focus on the regions of the disk beyond the dust sublimation radius, i.e. beyond 0.1 - 1 AU, depending on the stellar luminosity. We will be mostly concerned with models that aim to fit spectra of the dust continuum or gas lines, and derive physical parameters from these fits. For optically thick disks, these parameters include the accretion rate through the disk onto the star, the geometry of the disk, the dust properties, the surface chemistry and the thermal balance of the gas. For the latter we are mostly concerned with the upper layers of the disk, where the gas and dust temperature decouple and a photoevaporative flow may originate. We also briefly discuss optically thin disks, focusing mainly on the gas, not the dust. The evolution of these disks is dominated by accretion, viscous spreading, photoevaporation, and dust settling and coagulation. The density and temperature structure arising from the surface layer models provide input to models of photoevaporation, which occurs largely in the outer disk. We discuss the consequences of photoevaporation on disk evolution and planet formation. http://arxiv.org/abs/astro-ph/0602619 Astrophysics, abstract astro-ph/0602623 From: Mauron [view email] Date: Tue, 28 Feb 2006 17:04:15 GMT (776kb) Imaging the circumstellar envelopes of AGB stars Authors: N.Mauron (1), P.J. Huggins (2) ((1) CNRS & Montpellier Univ., France; (2) New-York Univ., USA) Comments: Accepted by AA 21 Feb 2006; 18 pages, 14 figs; for high resolution images, contact mauron at graal.univ-montp2.fr We report the results of an exploratory program to image the extended circumstellar envelopes of asymptotic giant branch (AGB) stars in dust-scattered galactic light. The goal is to characterize the morphology of the envelopes as a probe of the mass-loss process. The observations consist of short exposures with the VLT and longer exposures with 1-2m telescopes, augmented with archival images from the Hubble Space Telescope. We observed 12 AGB stars and detected the circumstellar envelopes in 7. The detected envelopes have mass loss rates more than about 5 10E-6 solar mass per year, and they can be seen out to distances of about 1 kpc. The observations provide information on the mass loss history on time scales up to about 10,000 years. For the five AGB envelopes in which the circumstellar geometry is well determined by scattered light observations, all except one (OH348.2-19.7) show deviations from spherical symmetry. Two (IRC+10216 and IRC+10011) show roughly spherical envelopes at large radii but asymmetry or bipolarity close to the star; one (AFGL 2514) shows an extended, elliptical envelope, and one (AFGL 3068) shows a spiral pattern. The non-spherical structures are all consistent with the effects of binary interactions. Our observations are in accord with a scenario in which binary companions play a role in shaping planetary nebulae, and show that the circumstellar gas is already partly shaped on the AGB, before evolution to the proto-planetary nebula phase. http://arxiv.org/abs/astro-ph/0602623 From owner-public@setileague.org Thu Mar 2 06:32:11 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k22EWAri026635 for ; Thu, 2 Mar 2006 06:32:11 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id JAA05838 for public-list; Thu, 2 Mar 2006 09:18:58 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f25.bay114.hotmail.com [65.54.169.35]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id JAA05828 for ; Thu, 2 Mar 2006 09:18:56 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Thu, 2 Mar 2006 06:18:24 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Thu, 02 Mar 2006 14:18:20 GMT X-Originating-IP: [68.238.91.171] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: SETI Optical Telescope Nears Completion Date: Thu, 02 Mar 2006 09:18:20 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 02 Mar 2006 14:18:24.0373 (UTC) FILETIME=[2AB1E250:01C63E04] Sender: owner-public@setileague.org Precedence: bulk EXO LIFE - SETI Optical Telescope Nears Completion http://www.spacedaily.com/reports/SETI_Optical_Telescope_Nears_Completion.html Harvard MA (SPX) March 1, 2006 - Workers are nearing completion of a new optical instrument that will be devoted exclusively to the search for extraterrestrial life. On the campus of Harvard University's Oak Ridge Observatory, physicist Paul Horowitz and his team are building a 72-inch optical telescope outfitted with a special camera intended to search for artificial light signals from alien civilizations. From owner-public@setileague.org Thu Mar 2 06:42:35 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k22EgYm6026759 for ; Thu, 2 Mar 2006 06:42:34 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id JAA06262 for public-list; Thu, 2 Mar 2006 09:32:32 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f22.bay114.hotmail.com [65.54.169.32]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id JAA06258 for ; Thu, 2 Mar 2006 09:32:29 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Thu, 2 Mar 2006 06:31:56 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Thu, 02 Mar 2006 14:31:52 GMT X-Originating-IP: [68.238.91.171] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: Pioneer 10 - 34th Anniversary Support Date: Thu, 02 Mar 2006 09:31:52 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 02 Mar 2006 14:31:56.0728 (UTC) FILETIME=[0EE56B80:01C63E06] Sender: owner-public@setileague.org Precedence: bulk >From: "Larry Kellogg" >To: >Subject: [lunar-update] Pioneer 10 - 34th Anniversary Support >Date: Wed, 1 Mar 2006 17:59:35 -0800 > >Good day. > >There will be and attempt to contact Pioneer 10 this week, March 3, 4, and >5. > >Earth has come around the Sun and will be directly within Pioneer 10's >antenna pattern, if an antenna pattern there might be. Might be, because >the fixed frequency oscillator is dead and the only way to wake up the >spacecraft is to send up a strong signal which will wake up the variable >frequency oscillator and let the spacecraft send back a signal at a known >offset from what it sees coming up. > >This will be the last time Earth will be here as the Sun drags us along as >it goes on its way around the Solar System. Each year Earth moves over just >a bit in space and in the past you could command Pioneer 10 to re-align >itself to look at a 400 KW up-link signal from Earth but there is not >enough >power on board Pioneer 10 to do that now and no one is sending commands >anyway. [Mission long over and I took all the equipment out of the Pioneer >Operations space, sorry.] > >[36 pictures of what is NOT there now, including me. Don't click on the >link >unless you have the time for them to down load. :-( ] >http://lkellogg.vttoth.com/LarryRussellKellogg/PioneerPic.html > >If Pioneer 10 is heard from then maybe they will get some Radio Science and >some Doppler information that will give one more data point in >understanding >the Pioneer Anomaly. The Pioneer Master Data Records that have been saved >are also being used to understand what the spacecraft was doing for 30 >years. > >I don't think there will be any data received from the spacecraft even if >it >is heard from as there have been hardware modifications at the Deep Space >Network that took out some of the old equipment that was used in decoding >the down link, and of course there isn't any hardware at all to look at the >data where I used to work. [Those pictures above that you didn't look at.] > >Will let you know if I hear of any successes in listening to the old bird. >:-) > >Thanks for looking up with me. > >Larry Kellogg > >Web Site: http://lkellogg.vttoth.com/LarryRussellKellogg/ >BlogSpot: http://kelloggserialreports.blogspot.com/ >RSS link: http://kelloggserialreports.blogspot.com/atom.xml >Newsltr.: https://news.altair.com/mailman/listinfo/lunar-update > >============================================================= >[Second page of a 12 page Power Point presentation describing the upcoming >support. Good luck in understanding the acronyms. - LRK -] > >* Three Supports performed over three days >-- DOY 062, 063, and 064 (March 3, 4, and 5) >* 70-m antenna used >* 400 kW uplink power >* Three different tune profiles for capturing the transponder >* Antenna's low noise path utilized >* Radio Science monitoring downlink for signal detection >* DTT system configured for throughput mode if acquisition is achieved. >* NOPE monitoring supports in ROC >* The Pioneer 10 RTLT is 24:56:25 (hh:mm:ss) > >------------------------------------------------------------- >Maybe some help. - LRK - >http://www2.jpl.nasa.gov/basics/glossary.html >http://dsnra.jpl.nasa.gov/technical/acronyms.html > > >DTT Downlink Telemetry and Tracking Subsystem >Successor to the BVR in the NSP era. > >NOPE Network Operations Project Engineer > >BVR Block V Receiver >Standard DSN telemetry receiver: input typically two 300 MHz I.F.s, output >two digital data streams. This will be replaced by the DTT in the NSP era. > >NSP Network Simplication Plan >Upgrade of the DSN controller subsystems > >ROC ??? > >RTLT Round Trip Light Time > >============================================================= > >WHAT THE MIND CAN CONCEIVE, AND BELIEVE, IT WILL ACHIEVE - LRK > >============================================================= > >Info on the lunar-update at >https://news.altair.com/mailman/listinfo/lunar-update > >This is a moderated list. The moderator is Larry Kellogg. >Please send suggestions for postings directly to Larry. >(larry.kellogg at sbcglobal.net) > >============================================================= >end > > >_______________________________________________ >lunar-update mailing list, moderated by Larry Kellogg >To unsubscribe or change your options please visit: >http://news.altair.com/mailman/listinfo/lunar-update >Forwarded by GNU Mailman at Altair Engineering, Inc. http://www.altair.com/ > From owner-public@setileague.org Thu Mar 2 07:52:11 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k22FqBg9027253 for ; Thu, 2 Mar 2006 07:52:11 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id KAA08496 for public-list; Thu, 2 Mar 2006 10:46:16 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f2.bay114.hotmail.com [65.54.169.12]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id KAA08492 for ; Thu, 2 Mar 2006 10:46:14 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Thu, 2 Mar 2006 07:45:01 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Thu, 02 Mar 2006 15:44:24 GMT X-Originating-IP: [24.39.94.195] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: Contact 23: Music of the Spheres Date: Thu, 02 Mar 2006 10:44:24 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 02 Mar 2006 15:45:01.0162 (UTC) FILETIME=[4438F4A0:01C63E10] Sender: owner-public@setileague.org Precedence: bulk http://www.contact-conference.org/2006/2006index.htm Contact 23: Music of the Spheres March 17-19, 2006 NASA Ames Research Center Mountain View, CA In addition to the eclectic scope of presentations you have come to expect for 23 years at CONTACT, this year the conference continues their exploration of Science and the Arts with a focus on Music. In past years they have looked at science and its relationship to art and literature. This year they will explore music, harmony and resonance as they touch the physical sciences and anthropology. Celebrate 3 days of Music & Science, Human Futures in Space, World Building, food and fun. More information on the conference Dr. Seth Shostak, Senior Astronomer at the SETI Institute, discusses "ET's Music" It's happened in science-fiction, and some have considered it a real possibility: if we make contact with the extraterrestrials, we needn't worry about a universal translator. We'll just speak to them with music. But does this make sense? Will E.T. recognize music, or for that matter, even be able to hear it? In this paper, we'll discuss the aliens' likely interest (or otherwise) in terrestrial tunes. SETI Institute Director of Interstellar Message Composition, Dr. Douglas Vakoch, presents "A Primer of Basic Musical Concepts for Interstellar Communication" Interstellar messages inspired by terrestrial music may let us convey something about the human sense of aesthetics in a form intelligible to extraterrestrial scientists. Drawing on the mathematical and physical foundations of music, this paper introduces a primer of basic musical concepts such as duration and rhythm, which could be transmitted by radio waves or brief laser pulses. As an additional benefit, this primer tells extraterrestrials something about human cognition and perception. SETI Institute Board of Trustees member Andrew Fraknoi talks about "The Music of the Spheres: Astronomically Inspired Music" A summary of some of the most interesting examples of music inspired by real astronomy, from rock and roll songs about black holes, to jazz about supernovae, to classical music simulating the big bang. The presentation discusses a variety of pieces of music, showing slides of the album covers and composers when possible, but only briefly talks about the astronomy behind each piece. From owner-public@setileague.org Thu Mar 2 14:04:57 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, MSGID_FROM_MTA_HEADER autolearn=unavailable version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k22M4sZd030039 for ; Thu, 2 Mar 2006 14:04:56 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id QAA18466 for public-list; Thu, 2 Mar 2006 16:56:35 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f26.bay114.hotmail.com [65.54.169.36]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id QAA18462; Thu, 2 Mar 2006 16:56:33 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Thu, 2 Mar 2006 13:56:01 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Thu, 02 Mar 2006 21:55:56 GMT X-Originating-IP: [24.39.94.195] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Cc: bioastro@setileague.org Subject: SETI public: The Scientist: Astrobiology under assault Date: Thu, 02 Mar 2006 16:55:56 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 02 Mar 2006 21:56:01.0955 (UTC) FILETIME=[18B06730:01C63E44] Sender: owner-public@setileague.org Precedence: bulk Astrobiology under assault NASA budget for Fiscal 2007 would slash funds for space science research [Published 2nd March 2006 04:46 PM GMT] -------------------------------------------------------------------------- The Bush administration has proposed cutting support for astrobiology at the National Aeronautics and Space Administration (NASA) by 50% in Fiscal 2007, as part of a 25% overall reduction in solar system research. Scientists and NASA officials warn that the proposed cut, contained in the president's budget request released last month, will adversely affect future generations of researchers. Carl B. Pilcher, NASA's senior scientist for astrobiology, said the cut would send the wrong signal to universities that had, at NASA's prompting, established astrobiology programs during the past decade. "The impact [of the cut] is not only on the amount of research that NASA can support, but also the willingness of universities and other organizations to make investments of their own in this field," Pilcher told The Scientist. "Astrobiology is the reason we go into space, to answer fundamental questions about the origins of life and how it evolved, and whether there are other places where organisms are living," echoed Hiroshi Ohmoto, director of Penn State's Astrobiology Research Center. "It is the whole justification for future space missions." Funds for astrobiology research would be slashed from around $60 million in Fiscal 2005 to $30 million for the fiscal year beginning October 1, 2006. Overall, NASA's Solar System Research account, which includes astrobiology research, would receive $274 million, a cut of $89 million, or 25% less than the Fiscal 2006 request. In September 2005, NASA Administrator Michael Griffin told a news conference he would not cut "one thin dime" from space science research. But a $2.3 billion miscalculation in the Space Shuttle budget through 2010, uncovered late last year, altered that plan. "I didn't want to do it, but that's one of the things we had to do," Griffin said of the proposed cutback during a budget briefing last month. About half of NASA's astrobiology budget is for competitive grants and cooperative research agreements at 16 U.S. universities and facilities supporting more than 700 investigators. The grants are administered by the NASA Astrobiology Institute (NAI), headquartered at the Ames Research Center, Mountain View, Calif. The Ames Research Center, one of NASA's 10 field installations, operates programs in fundamental space biology and human factors research, as well as in supercomputing and nanotechnology. Funding at Ames, however, has been on a downward spiral for several years; Ames' proposed Fiscal 2007 budget is $530 million, down 12% from $603 million this year. Ames Director G. Scott Hubbard, a scientist who was instrumental in founding NAI in 1998, resigned in January. There was speculation among employees that Hubbard wanted to leave before being axed by Griffin, who had already replaced most of the other 10 center directors since becoming NASA administrator in April 2005. But in a memo to employees, reported in the media, Hubbard said he was stepping aside to let Griffin select a center director "of the administration's choosing." Hubbard could not be reached for comment and NASA officials declined to comment. Hubbard has since taken a position at the SETI Institute in Mountain View, Calif., a nonprofit facility supporting work in the search for extraterrestrial intelligence (SETI). "Scott will be looking at all kinds of ways to help astrobiology grow and flourish," said Jill Tarter, the institute's director for SETI research. Initial plans include entrepreneurship and seeking state funding, she said. Like other life scientists, astrobiologists are upset with the administration's budget proposals and plan to lobby Congress to restore funding. "Action is needed immediately to prevent the slowing down, or even cessation, of astrobiology research," wrote Nobel laureate Baruch S. Blumberg, a former NAI director, and Thomas Pierson, SETI Institute chief executive, in a Feb. 15 letter to members of the U.S. astrobiology community, urging them to contact their legislators. With these lobbying efforts, "Congress will see an exceptionally large crop of scientists of various flavors this spring," Tarter predicted. "There's lots of bad news for science in the '07 budget." Ted Agres tagres@the-scientist.com Links within this article T. Agres, "NIH held to flat funding in '07," The Scientist, February 7, 2006. http://www.thescientist.com/news/display/23092/ Penn State Astrobiology Research Center http://psarc.geosc.psu.edu/ NASA Astrobiology Institute (NAI) http://nai.nasa.gov J.S. Lyons, "NASA/AMES director resigns," Mercury News, January 20, 2006. http://www.siliconvalley.com/mld/siliconvalley/ business/technology/13672445.htm? SETI www.seti.org B. Blumberg and T. Pierson letter to astrobiology community, February 15, 2006. www.seti.org/site/pp.asp?c=ktJ2J9MMIsE&b=1425163 From owner-public@setileague.org Fri Mar 3 11:12:03 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,FORGED_RCVD_HELO autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k23JC28J006679 for ; Fri, 3 Mar 2006 11:12:03 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id OAA21609 for public-list; Fri, 3 Mar 2006 14:06:09 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from krypton2.melitacable.com (smtp.onvol.net [212.56.128.131]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id OAA21602; Fri, 3 Mar 2006 14:06:06 -0500 (EST) Received: from vol.net.mt (ppp-130-142-dial3.as.vol.net.mt [212.56.130.142]) by krypton2.melitacable.com (8.12.11/8.12.11) with ESMTP id k23J47JS005671; Fri, 3 Mar 2006 20:04:08 +0100 (CET) Message-ID: <44089244.C519FB45@vol.net.mt> Date: Fri, 03 Mar 2006 20:00:21 +0100 From: Alex Michael Bonnici X-Mailer: Mozilla 4.75 [en] (Win95; U) X-Accept-Language: en MIME-Version: 1.0 To: ACC LIST , BioAstro , setipublic , FPSpace Subject: SETI public: Surprise! Jupiter has a new red spot. Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-public@setileague.org Precedence: bulk NASA Science News for March 3, 2006 Backyard astronomers, grab your telescopes. Jupiter is growing a new red spot. FULL STORY at http://science.nasa.gov/headlines/y2006/02mar_redjr.htm?list58588 Find out about the Science@NASA Podcast feed at http://science.nasa.gov/podcast.htm . From owner-public@setileague.org Fri Mar 3 13:17:40 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,FORGED_RCVD_HELO autolearn=unavailable version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k23LHek4007449 for ; Fri, 3 Mar 2006 13:17:40 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id QAA24452 for public-list; Fri, 3 Mar 2006 16:12:03 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from krypton2.melitacable.com (smtp.onvol.net [212.56.128.131]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id QAA24438; Fri, 3 Mar 2006 16:11:27 -0500 (EST) Received: from vol.net.mt (ppp-130-142-dial3.as.vol.net.mt [212.56.130.142]) by krypton2.melitacable.com (8.12.11/8.12.11) with ESMTP id k23L9SCb021179; Fri, 3 Mar 2006 22:09:28 +0100 (CET) Message-ID: <4408AF9F.B4B803AD@vol.net.mt> Date: Fri, 03 Mar 2006 22:05:39 +0100 From: Alex Michael Bonnici X-Mailer: Mozilla 4.75 [en] (Win95; U) X-Accept-Language: en MIME-Version: 1.0 To: ACC LIST , FPSpace , setipublic , BioAstro Subject: SETI public: Juptiter's Great Black Spot Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-public@setileague.org Precedence: bulk The recent news of Jupiter's new Red Spot has coincided with tonight's airing of the Motion Picture 2010 on Turner Classic Movies (TCM) in the UK which I am watching now. Who can ever forget the awesome sight of countless Von Neuman machines (the Monoliths) engaged in the stellarfication of Jupiter. "ALL THESE WORLDS ARE YOURS EXCEPT EUROPA!" Long Live Arthur C. Clarke and his awesome imagination!!!! Alex Michael Bonnici From owner-public@setileague.org Sat Mar 4 09:15:57 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, MSGID_FROM_MTA_HEADER autolearn=unavailable version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k24HFttv015564 for ; Sat, 4 Mar 2006 09:15:56 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id MAA21153 for public-list; Sat, 4 Mar 2006 12:09:05 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f21.bay114.hotmail.com [65.54.169.31]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id MAA21121; Sat, 4 Mar 2006 12:08:38 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Sat, 4 Mar 2006 09:08:07 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Sat, 04 Mar 2006 17:08:04 GMT X-Originating-IP: [129.44.237.145] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: fpspace@friends-partners.org Subject: SETI public: Jupiter's Great Black Spot Date: Sat, 04 Mar 2006 12:08:04 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 04 Mar 2006 17:08:07.0115 (UTC) FILETIME=[34E881B0:01C63FAE] Sender: owner-public@setileague.org Precedence: bulk One of our secret deep space probes has already imaged this mysterious phenomenon: http://www.futurevisions.net/pchen/digital/04_Jupiter-2010.jpeg Message: 9 Date: Fri, 03 Mar 2006 22:05:39 +0100 From: Alex Michael Bonnici Subject: [FPSPACE] Jupiter's Great Black Spot To: ACC LIST , FPSpace , setipublic , BioAstro The recent news of Jupiter's new Red Spot has coincided with tonight's airing of the Motion Picture 2010 on Turner Classic Movies (TCM) in the UK which I am watching now. Who can ever forget the awesome sight of countless Von Neuman machines (the Monoliths) engaged in the stellarfication of Jupiter. "ALL THESE WORLDS ARE YOURS EXCEPT EUROPA!" Long Live Arthur C. Clarke and his awesome imagination!!!! Alex Michael Bonnici From owner-public@setileague.org Sat Mar 4 09:53:47 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k24HrkfQ015759 for ; Sat, 4 Mar 2006 09:53:47 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id MAA21955 for public-list; Sat, 4 Mar 2006 12:48:02 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f7.bay114.hotmail.com [65.54.169.17]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id MAA21945; Sat, 4 Mar 2006 12:47:54 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Sat, 4 Mar 2006 09:47:22 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Sat, 04 Mar 2006 17:47:22 GMT X-Originating-IP: [129.44.237.145] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Cc: bioastro@setileague.org Subject: SETI public: Secure Identification of Free-Floating Planets Date: Sat, 04 Mar 2006 12:47:22 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 04 Mar 2006 17:47:22.0973 (UTC) FILETIME=[B11BE8D0:01C63FB3] Sender: owner-public@setileague.org Precedence: bulk Astrophysics, abstract astro-ph/0603040 From: Cheongho Han [view email] Date: Thu, 2 Mar 2006 07:00:59 GMT (27kb) Secure Identification of Free-Floating Planets Authors: Cheongho Han Comments: 5 pages including 2 figures Among the methods proposed to detect extrasolar planets, microlensing is the only technique that can detect free-floating planets. Free-floating planets are detected through the channel of short-duration isolated lensing events. However, if a seemingly isolated planetary event is detected, it is difficult to firmly conclude that the event is caused by a free-floating planet because a wide-separation planet can also produce an isolated event. There were several methods proposed to break the degeneracy between the isolated planetary events produced by the free-floating and wide-separation planets, but they are incomplete. In this paper, we show that free-floating planets can be securely identified by conducting astrometric follow-up observations of isolated events to be detected in future photometric lensing surveys by using high-precision interferometers to be operated contemporarily with the photometric surveys. The method is based on the fact that astrometric lensing effect covers much longer range of the lens-source separation than the photometric effect. We demonstrate that several astrometric follow-up observations of isolated planetary events associated with source stars brighter than $V\sim 19$ by using the {\it Space Interferometry Mission} with an exposure time of $\lesssim 10 {\rm min}$ for each observation will make it possible to measure the centroid shift induced by primaries with projected separations up to $\sim 100 {\rm AU}$. Therefore, the proposed method is far more complete than previously proposed methods that are flawed by the limited applicability only to planets with projected separations $\lesssim 20 {\rm AU}$ or planets accompanied by bright primaries. http://arxiv.org/abs/astro-ph/0603040 From owner-public@setileague.org Sun Mar 5 06:43:52 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,FORGED_RCVD_HELO autolearn=unavailable version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k25Ehp6P023824 for ; Sun, 5 Mar 2006 06:43:52 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id JAA20271 for public-list; Sun, 5 Mar 2006 09:36:16 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from krypton2.melitacable.com (smtp.onvol.net [212.56.128.131]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id JAA20235; Sun, 5 Mar 2006 09:35:55 -0500 (EST) Received: from vol.net.mt (ppp-130-31-dial3.as.vol.net.mt [212.56.130.31]) by krypton2.melitacable.com (8.12.11/8.12.11) with ESMTP id k25EY3sW001256; Sun, 5 Mar 2006 15:34:04 +0100 (CET) Message-ID: <440AF5F4.4FF963FD@vol.net.mt> Date: Sun, 05 Mar 2006 15:30:15 +0100 From: Alex Michael Bonnici X-Mailer: Mozilla 4.75 [en] (Win95; U) X-Accept-Language: en MIME-Version: 1.0 To: setipublic , BioAstro , SSI List , "spacesettlers@yahoogroups.com" , Carl Sagan Club On Line , H G Wells Literary Forum Subject: SETI public: Jules Verne and H. G. Wells Fans Take Note: Models from the Victorian/Sci-Fi Universes Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-public@setileague.org Precedence: bulk Jules Verne and H. G. Wells Fans Take Note: Models from the Victorian/Sci-Fi Universes Hello Gang, I came across this fanstastic web site late Friday evening which I would like to share with you. Namely JC Carbonel's Model Stories site (in French) showcases models from Victorian/Sci-Fi universes. The site has an expanding page devoted to Jules Verne's creations from his various novels as well as from the works of H.G. Wells, Edgar Rice Burroughs and a few others. Its title is: MAQUETTES DANS l'UNIVERS DE JULES VERNE ET CIE. http://modelstories.free.fr/Verne/index.html I came across it via Michael & Karen Crisafulli's website devoted to Jules Verne's Nautilus. http://home.att.net/~karen.crisafulli/nautilus.html Also check out Jean-Marc Deschamps' fascinating NemoTechnik website. http://www.nemotechnik.com/ Enjoy and Best Wishes, Alex Michael Bonnici PS If any one knows of any other web site devoted to Victorian Science Fiction Models or Science Fiction/Space Exploration Models can you please foward them to me. Also if you know of any webssites devoted to the possibility of creating Undersea Cities or Colonies please foward them to me as well. Many Thanks to you all beforehand. From owner-public@setileague.org Sun Mar 5 07:44:36 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k25FiZ6l024301 for ; Sun, 5 Mar 2006 07:44:35 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id KAA21875 for public-list; Sun, 5 Mar 2006 10:38:54 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f36.bay114.hotmail.com [65.54.169.46]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id KAA21871 for ; Sun, 5 Mar 2006 10:38:52 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Sun, 5 Mar 2006 07:38:21 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Sun, 05 Mar 2006 15:38:19 GMT X-Originating-IP: [71.240.244.69] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: Secure Identification of Free-Floating Planets Date: Sun, 05 Mar 2006 10:38:19 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 05 Mar 2006 15:38:21.0279 (UTC) FILETIME=[D51CE6F0:01C6406A] Sender: owner-public@setileague.org Precedence: bulk Astrophysics, abstract astro-ph/0603040 From: Cheongho Han [view email] Date: Thu, 2 Mar 2006 07:00:59 GMT (27kb) Secure Identification of Free-Floating Planets Authors: Cheongho Han Comments: 5 pages including 2 figures Among the methods proposed to detect extrasolar planets, microlensing is the only technique that can detect free-floating planets. Free-floating planets are detected through the channel of short-duration isolated lensing events. However, if a seemingly isolated planetary event is detected, it is difficult to firmly conclude that the event is caused by a free-floating planet because a wide-separation planet can also produce an isolated event. There were several methods proposed to break the degeneracy between the isolated planetary events produced by the free-floating and wide-separation planets, but they are incomplete. In this paper, we show that free-floating planets can be securely identified by conducting astrometric follow-up observations of isolated events to be detected in future photometric lensing surveys by using high-precision interferometers to be operated contemporarily with the photometric surveys. The method is based on the fact that astrometric lensing effect covers much longer range of the lens-source separation than the photometric effect. We demonstrate that several astrometric follow-up observations of isolated planetary events associated with source stars brighter than $V\sim 19$ by using the {\it Space Interferometry Mission} with an exposure time of $\lesssim 10 {\rm min}$ for each observation will make it possible to measure the centroid shift induced by primaries with projected separations up to $\sim 100 {\rm AU}$. Therefore, the proposed method is far more complete than previously proposed methods that are flawed by the limited applicability only to planets with projected separations $\lesssim 20 {\rm AU}$ or planets accompanied by bright primaries. http://arxiv.org/abs/astro-ph/0603040 From owner-public@setileague.org Sun Mar 5 08:03:10 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,FORGED_RCVD_HELO autolearn=unavailable version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k25G394F024422 for ; Sun, 5 Mar 2006 08:03:10 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id KAA22355 for public-list; Sun, 5 Mar 2006 10:55:28 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from krypton2.melitacable.com (smtp.onvol.net [212.56.128.131]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id KAA22336; Sun, 5 Mar 2006 10:55:04 -0500 (EST) Received: from vol.net.mt (ppp-130-31-dial3.as.vol.net.mt [212.56.130.31]) by krypton2.melitacable.com (8.12.11/8.12.11) with ESMTP id k25FqpqJ006086; Sun, 5 Mar 2006 16:52:52 +0100 (CET) Message-ID: <440B0868.DE94DCC7@vol.net.mt> Date: Sun, 05 Mar 2006 16:48:57 +0100 From: Alex Michael Bonnici X-Mailer: Mozilla 4.75 [en] (Win95; U) X-Accept-Language: en MIME-Version: 1.0 To: SSI List , "spacesettlers@yahoogroups.com" , FPSpace , setipublic , BioAstro , Jules Verne Forum Subject: SETI public: Undersea Exploration, Undersea Cities, and the Colonization of the Ocean Worlds of the Milky Way Galaxy Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Sender: owner-public@setileague.org Precedence: bulk Undersea Exploration, Undersea Cities, and the Colonization of the Ocean Worlds of the Milky Way Galaxy Hello Gang, Last Friday afternoon, Turner Classic Movies (TCM) aired Captain Nemo and the Underwater City. The possibility of creating and living in such Undersea cities has been a topic that has fascinated me since childhood. If any one on this list you knows of any websites devoted to the possibility of creating Undersea Cities or Colonies can you please forward them to me please. I did come across the following website about Phil Nuytten (pronounced, Newton) a major proponent for undersea colonization. I have seen him numerous times on a television program entitled Marine Machines on the National Geographic Channel here in Europe. Phil Nuytten's plans for Vent-Based Alpha, an undersea hot-vent microtopia powered by geothermal energy, which he is s leading with Jacques Cousteau’s son, Jean-Michael. There was an article about it in Wired Magazine entitled "The New Atlantis". http://www.wired.com/wired/archive/12.12/atlantis.html This technology has possibilities for the exploration and colonization of Jupiter's moon Europa and other ocean worlds that may exist in our galaxy. http://www.nuytco.com/about/phil.shtml and the following references via the Google Search Engine: http://www.google.com.mt/search?hl=en&q=Phil+Nuytten++%2BSubmarine&meta= http://www.google.com.mt/search?hl=en&ie=ISO-8859-1&q=Phil+Nuytten+%2BUndersea+Cities&btnG=Google+Search&meta= Many thanks beforehand, Alex Michael Bonnici From owner-public@setileague.org Sun Mar 5 09:03:40 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,FORGED_RCVD_HELO autolearn=unavailable version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k25H3dSf024797 for ; Sun, 5 Mar 2006 09:03:39 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id LAA24081 for public-list; Sun, 5 Mar 2006 11:57:37 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from krypton2.melitacable.com (smtp.onvol.net [212.56.128.131]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id LAA24061; Sun, 5 Mar 2006 11:57:03 -0500 (EST) Received: from vol.net.mt (ppp-130-31-dial3.as.vol.net.mt [212.56.130.31]) by krypton2.melitacable.com (8.12.11/8.12.11) with ESMTP id k25Gt79e003939; Sun, 5 Mar 2006 17:55:08 +0100 (CET) Message-ID: <440B1702.51F8D99C@vol.net.mt> Date: Sun, 05 Mar 2006 17:51:15 +0100 From: Alex Michael Bonnici X-Mailer: Mozilla 4.75 [en] (Win95; U) X-Accept-Language: en MIME-Version: 1.0 To: Carl Sagan List , ACC LIST , "transhumantech@yahoogroups.com" , Jules Verne Forum , setipublic , BioAstro Subject: SETI public: Wired Magazine: The New Age of Exploration Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-public@setileague.org Precedence: bulk Hello Once Again Gang, When sending out my last posting concerning Phil Nuytten's plans for Vent Based Alpha, I noticed a number of articles published over the past few years in Wired Magazine concerning The New Age of Exploration. Some of these articles are dated. But, they still make for some exciting reading for a lazy Sunday afternoon. They concern both the current and ongoing exploration of our planet's Seas and Oceans, Our Solar System. Our Universe, and the search for life in Space. Here is one very exciting article concerning the possible future exploration of Jupiter's moon Europa, entitled "Next Stop, Europa". http://www.wired.com/wired/archive/12.12/europa.html I wish you all a pleasent Sunday Afternoon's reading, Yours truly, Alex Michael Bonnici From owner-public@setileague.org Mon Mar 6 08:01:29 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k26G1TCk002756 for ; Mon, 6 Mar 2006 08:01:29 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id KAA29920 for public-list; Mon, 6 Mar 2006 10:45:49 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f19.bay114.hotmail.com [65.54.169.29]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id KAA29916 for ; Mon, 6 Mar 2006 10:45:46 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Mon, 6 Mar 2006 07:45:10 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Mon, 06 Mar 2006 15:45:07 GMT X-Originating-IP: [24.39.94.195] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: Book Review: Parallel Worlds Date: Mon, 06 Mar 2006 10:45:07 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 06 Mar 2006 15:45:10.0164 (UTC) FILETIME=[F33D8D40:01C64134] Sender: owner-public@setileague.org Precedence: bulk Review: Parallel Worlds Sun, 05 Mar 2006 - Pandora had her box. Adam and Eve had their apple. Physicists have the expanding universe. Whether the universe expands forever into a deep freeze or eventually contracts back into a hellish speck containing all energy, the future looks grim. Michio Kaku in his book Parallel Worlds doesn't let these portends cause any dismay as he provides plenty of ideas for dealing with and possibly escaping from a failing universe. For after all, opening a box wasn't the end of the world, nor was eating an apple. http://www.universetoday.com/am/publish/book_review_parallel_worlds.html From owner-public@setileague.org Wed Mar 8 07:25:35 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k28FPZcL028008 for ; Wed, 8 Mar 2006 07:25:35 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id KAA21845 for public-list; Wed, 8 Mar 2006 10:19:01 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f18.bay114.hotmail.com [65.54.169.28]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id KAA21840 for ; Wed, 8 Mar 2006 10:18:58 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 8 Mar 2006 07:18:26 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Wed, 08 Mar 2006 15:18:22 GMT X-Originating-IP: [24.39.94.195] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: The Innovative Interstellar Explorer (IIE) Date: Wed, 08 Mar 2006 10:18:22 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 08 Mar 2006 15:18:26.0920 (UTC) FILETIME=[8C756E80:01C642C3] Sender: owner-public@setileague.org Precedence: bulk To quote: "The Innovative Interstellar Explorer is a NASA "Vision Mission" study funded by NASA following a proposal under NRA-03-OSS-01 on 11 September 2003. This study has focused on the elusive quest to reach and measure the interstellar medium, the "undiscovered country" outside of the influence of the nearest star, our Sun." The plan is for a launch in 2014 to reach 200 AU in about 30 years. http://interstellarexplorer.jhuapl.edu/ From owner-public@setileague.org Wed Mar 8 13:37:11 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k28LbAbH031007 for ; Wed, 8 Mar 2006 13:37:10 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id QAA00798 for public-list; Wed, 8 Mar 2006 16:34:50 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f33.bay114.hotmail.com [65.54.169.43]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id QAA00791 for ; Wed, 8 Mar 2006 16:34:47 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 8 Mar 2006 13:34:16 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Wed, 08 Mar 2006 21:34:14 GMT X-Originating-IP: [24.39.94.195] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: Research Warps into Hyperdrive Date: Wed, 08 Mar 2006 16:34:14 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 08 Mar 2006 21:34:16.0277 (UTC) FILETIME=[0CEC4050:01C642F8] Sender: owner-public@setileague.org Precedence: bulk Research Warps into Hyperdrive http://www.space.com/businesstechnology/060308_exotic_drive.html Take one part high-frequency gravitational wave generation, then add in a quantum vacuum field. From owner-public@setileague.org Thu Mar 9 11:11:14 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=AWL,BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k29JBEkW015096 for ; Thu, 9 Mar 2006 11:11:14 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id OAA01959 for public-list; Thu, 9 Mar 2006 14:06:54 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f12.bay114.hotmail.com [65.54.169.22]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id OAA01955; Thu, 9 Mar 2006 14:06:50 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Thu, 9 Mar 2006 11:06:18 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Thu, 09 Mar 2006 19:06:14 GMT X-Originating-IP: [24.39.94.195] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: NASA's Cassini Discovers Potential Liquid Water on Enceladus Date: Thu, 09 Mar 2006 14:06:14 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 09 Mar 2006 19:06:18.0927 (UTC) FILETIME=[8C05E3F0:01C643AC] Sender: owner-public@setileague.org Precedence: bulk NASA's Cassini Discovers Potential Liquid Water on Enceladus http://www.spaceref.com/news/viewpr.html?pid=19207 "NASA's Cassini spacecraft may have found evidence of liquid water reservoirs that erupt in Yellowstone-like geysers on Saturn's moon Enceladus. The rare occurrence of liquid water so near the surface raises many new questions about the mysterious moon." From owner-public@setileague.org Thu Mar 9 17:23:24 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=AWL,BAYES_00, MSGID_FROM_MTA_HEADER autolearn=unavailable version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k2A1NNC9024102 for ; Thu, 9 Mar 2006 17:23:24 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id UAA12235 for public-list; Thu, 9 Mar 2006 20:20:42 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f30.bay114.hotmail.com [65.54.169.40]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id UAA12231; Thu, 9 Mar 2006 20:20:40 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Thu, 9 Mar 2006 17:20:08 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Fri, 10 Mar 2006 01:20:07 GMT X-Originating-IP: [129.44.211.39] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: Giant Planet Accretion and Migration: Surviving the Type I Regime Date: Thu, 09 Mar 2006 20:20:07 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 10 Mar 2006 01:20:08.0994 (UTC) FILETIME=[C5628020:01C643E0] Sender: owner-public@setileague.org Precedence: bulk Paper: astro-ph/0603068 Date: Thu, 2 Mar 2006 23:13:24 GMT (974kb) Title: Giant Planet Accretion and Migration: Surviving the Type I Regime Authors: Edward W. Thommes and Norman Murray Comments: To appear in ApJ. 644. 12 pages, 9 figures. Figures degraded for size; see http://www.cita.utoronto.ca/~thommes/ for originals \\ In the standard model of gas giant planet formation, a large solid core (~ 10 times the Earth's mass) forms first, then accretes its massive envelope (100 or more Earth masses) of gas. However, inward planet migration due to gravitational interaction with the proto-stellar gas disk poses a difficulty in this model. Core-sized bodies undergo rapid "Type I" migration; for typical parameters their migration timescale is much shorter than their accretion timescale. How, then, do growing cores avoid spiraling into the central star before they ever get the chance to become gas giants? Here, we present a simple model of core formation in a gas disk which is viscously evolving. As the disk dissipates, accretion and migration timescales eventually become comparable. If this happens while there is still enough gas left in the disk to supply a jovian atmosphere, then a window of opportunity for gas giant formation opens. We examine under what circumstances this happens, and thus, what predictions our model makes about the link between proto-stellar disk properties and the likelihood of forming giant planets. \\ ( http://arXiv.org/abs/astro-ph/0603068 , 974kb) From owner-public@setileague.org Thu Mar 9 17:24:41 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=AWL,BAYES_00, MSGID_FROM_MTA_HEADER autolearn=unavailable version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k2A1Off5024138 for ; Thu, 9 Mar 2006 17:24:41 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id UAA12329 for public-list; Thu, 9 Mar 2006 20:22:50 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f15.bay114.hotmail.com [65.54.169.25]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id UAA12323; Thu, 9 Mar 2006 20:22:48 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Thu, 9 Mar 2006 17:22:16 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Fri, 10 Mar 2006 01:22:11 GMT X-Originating-IP: [129.44.211.39] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: Young Galaxies Were Hostile To Life Date: Thu, 09 Mar 2006 20:22:11 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 10 Mar 2006 01:22:16.0605 (UTC) FILETIME=[117264D0:01C643E1] Sender: owner-public@setileague.org Precedence: bulk STELLAR CHEMISTRY - Young Galaxies Were Hostile To Life http://www.spacedaily.com/reports/Young_Galaxies_Were_Hostile_To_Life.html Pasadena CA (SPX) March 7, 2006 - Scientists said Tuesday they have found evidence that the earliest galaxies in the universe could have been extremely hostile environments for life. From owner-public@setileague.org Thu Mar 9 19:27:34 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=AWL,BAYES_00, MSGID_FROM_MTA_HEADER autolearn=unavailable version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k2A3RY9m024946 for ; Thu, 9 Mar 2006 19:27:34 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id WAA15585 for public-list; Thu, 9 Mar 2006 22:24:39 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f20.bay114.hotmail.com [65.54.169.30]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id WAA15581; Thu, 9 Mar 2006 22:24:37 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Thu, 9 Mar 2006 19:24:05 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Fri, 10 Mar 2006 03:24:03 GMT X-Originating-IP: [71.123.17.17] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: 4 papers on protoplanetary disks and their dust and exoplanets Date: Thu, 09 Mar 2006 22:24:03 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 10 Mar 2006 03:24:05.0575 (UTC) FILETIME=[15EEB570:01C643F2] Sender: owner-public@setileague.org Precedence: bulk Astrophysics, abstract astro-ph/0603132 From: Sijme-Jan Paardekooper [view email] Date: Mon, 6 Mar 2006 14:39:51 GMT (104kb) Dust flow in gas disks in the presence of embedded planets Authors: S.-J. Paardekooper, G. Mellema Comments: 13 pages, 12 figures, accepted for publication in A&A We study the dynamics of gas and dust in a protoplanetary disk in the presence of embedded planets. We investigate the conditions for dust-gap formation in terms of particle size and planetary mass. We also monitor the amount of dust that is accreted by the planet relative to the amount of gas, which is an important parameter in determining the enrichment of solids in giant planets compared to the solid content of the central star. We use a new two-fluid hydrodynamics code to solve the flow equations for both gas and dust. For the gas, we use a Godunov-type scheme with an approximate Riemann solver (the Roe solver). The dust is treated as a pressureless fluid by essentially the same numerical method as is used for the gas. We find that it only takes a planet of 0.05 Jupiter masses to open up a gap in a disk with a significant population of mm-sized particles. Dust particles larger than 150 micron participate in gap formation. We also find that the formation of the gap severely slows down dust accretion compared to that in the gas. Therefore, it is not possible to enrich a newly formed giant planet in solids, if these solids are contained in particles with sizes from 150 micron to approximately 10 cm. http://arxiv.org/abs/astro-ph/0603132 Astrophysics, abstract astro-ph/0603103 From: Karen Willacy [view email] Date: Fri, 3 Mar 2006 23:42:30 GMT (92kb) Turbulence driven diffusion in protoplanetary disks - chemical effects in the outer disk Authors: K. Willacy, W. D. Langer, M. Allen, G. Bryden Comments: Accepted in ApJ The dynamics and chemistry of protostellar disks are likely to be intricately linked, with dynamical processes altering the chemical composition, and chemistry, in turn, controlling the ionization structure and hence the ability of the magneto-rotational instability to drive the disk turbulence. Here we present the results from the first chemical models of the outer regions (R > 100 AU) of protoplanetary disks to consider the effects of turbulence driven diffusive mixing in the vertical direction. We show that vertical diffusion can greatly affect the column densities of many species, increasing them by factors of up to two orders of magnitude. Previous disk models have shown that disks can be divided into three chemically distinct layers, with the bulk of the observed molecular emission coming from a region between an atomic/ionic layer on the surface of the disk and the midplane regoin where the bulk of molecules are frozen onto grains. Diffusion retains this three layer structure, but increases the depth of the molecular layer by bringing atoms and atomic ions form by photodissociation in the surface layers into the shielded molecular layer where molecules can reform. For other species, notably NH3 and N2H+, the column densities are relatively unaffected by diffusion. These species peak in abundance near the midplane where most other molecules are heavily depleted, rather than in the molecular layer above. Diffusion only affects the abundances of those molecules with peak abundances in the molecular layer. We find that diffusion does not affect the ionization fraction of the disk. We compare the calculated column densities to observations of DM Tau, LkCa 15 and TW Hya and find good agreement for many molecules with a diffusion coefficient of 1e18 cm^2 s^-1. http://arxiv.org/abs/astro-ph/0603103 Astrophysics, abstract astro-ph/0603104 From: James Muzerolle [view email] Date: Fri, 3 Mar 2006 23:51:26 GMT (215kb) 24-micron Detections of Disks around Very Low-mass Stars and Brown Dwarfs in IC 348: Grain Growth/Settling and Inner Holes? Authors: James Muzerolle, Lucia Adame, Paola D'Alessio, Nuria Calvet, Kevin Luhman, August Muench, Charles Lada, George Rieke, Nick Siegler, David Trilling, Erick Young, Lori Allen, Lee Hartmann, S. Thomas Megeath Comments: 24 pages, 6 figures (one in PNG format). Accepted to ApJ We present observations of six late-type members of the young cluster IC 348 detected at 24 microns with the Multiband Imaging Photometer for Spitzer(MIPS). At least four of the objects are probably substellar. Combining these data with ground-based optical and near-infrared photometry and complementary observations with the Infrared Array Camera (IRAC), we have modeled the spectral energy distributions using detailed models of irradiated accretion disks. We are able to fit the observations with models using a range of maximum grain sizes from ISM-type dust to grains as large as 1 millimeter. Two objects show a lack of excess emission at wavelengths shortward of 5.8-8 microns but significant excess at longer wavelengths, indicative of large optically thin or evacuated inner holes. Our models indicate a inner hole of radius ~ 0.5-0.9 AU for the brown dwarf L316; this is the first brown dwarf with evidence for an AU-scale inner disk hole. We examine several possible mechanisms for the inner disk clearing in this case, including photoevaporation and planet formation. http://arxiv.org/abs/astro-ph/0603104 Paper: astro-ph/0603153 Date: Tue, 7 Mar 2006 11:31:01 GMT (373kb) Title: Dust settling in local simulations of turbulent protoplanetary disks Authors: S. Fromang, J. Papaloizou Comments: 15 pages, 16 figures, accepted in Astronomy & Astrophysics \\ In this paper, we study the effect of MHD turbulence on the dynamics of dust particles in protoplanetary disks. We vary the size of the particles and relate the dust evolution to the turbulent velocity fluctuations. We performed numerical simulations using two Eulerian MHD codes, both based on finite difference techniques: ZEUS--3D and NIRVANA. These were local shearing box simulations incorporating vertical stratification. Both ideal and non ideal MHD simulations with midplane dead zones were carried out. The codes were extended to incorporate different models for the dust as an additional fluid component. Good agreement between results obtained using the different approaches was obtained. The simulations show that a thin layer of very small dust particles is diffusively spread over the full vertical extent of the disk. We show that a simple description obtained using the diffusion equation with a diffusion coefficient simply expressed in terms of the velocity correlations accurately matches the results. Dust settling starts to become apparent for particle sizes of the order of 1 to 10 centimeters for which the gas begins to decouple in a standard solar nebula model at 5.2 AU. However, for particles which are 10 centimeters in size, complete settling toward a very thin midplane layer is prevented by turbulent motions within the disk, even in the presence of a midplane dead zone of significant size. These results indicate that, when present, MHD turbulence affects dust dynamics in protoplanetary disks. We find that the evolution and settling of the dust can be accurately modelled using an advection diffusion equation that incorporates vertical settling. The value of the diffusion coefficient can be calculated from the turbulent velocity field when that is known for a time of several local orbits. \\ ( http://arXiv.org/abs/astro-ph/0603153 , 373kb) From owner-public@setileague.org Thu Mar 9 23:00:00 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00 autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k2A6xxBO027765 for ; Thu, 9 Mar 2006 22:59:59 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id BAA21550 for public-list; Fri, 10 Mar 2006 01:58:06 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from smtpout04-04.prod.mesa1.secureserver.net (smtpout04-04.prod.mesa1.secureserver.net [64.202.165.199]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with SMTP id BAA21546 for ; Fri, 10 Mar 2006 01:58:03 -0500 (EST) Received: (qmail 15018 invoked from network); 10 Mar 2006 06:57:31 -0000 Received: from unknown (4.239.189.166) by smtpout04-04.prod.mesa1.secureserver.net (64.202.165.199) with ESMTP; 10 Mar 2006 06:57:30 -0000 Message-ID: <000301c6440f$e6616aa0$a6bdef04@ONE> From: "Ronald C. Blue" To: References: Subject: Re: SETI public: Young Galaxies Were Hostile To Life Date: Fri, 10 Mar 2006 01:56:48 -0500 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=response Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2670 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2670 Sender: owner-public@setileague.org Precedence: bulk Maybe not. Lightening is thought to make amino acids the precursor of life. A violent galaxies would produce more amino acids on earth type planets by providing the ionization path for a lightening bolt. ----- Original Message ----- From: "LARRY KLAES" To: Sent: Thursday, March 09, 2006 8:22 PM Subject: SETI public: Young Galaxies Were Hostile To Life > STELLAR CHEMISTRY > > - Young Galaxies Were Hostile To Life > > http://www.spacedaily.com/reports/Young_Galaxies_Were_Hostile_To_Life.html > > Pasadena CA (SPX) March 7, 2006 - Scientists said Tuesday they have found > evidence that the earliest galaxies in the universe could have been > extremely > hostile environments for life. > > > > From owner-public@setileague.org Fri Mar 10 03:47:05 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=AWL,BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k2ABl51t029352 for ; Fri, 10 Mar 2006 03:47:05 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id GAA28927 for public-list; Fri, 10 Mar 2006 06:44:28 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f28.bay114.hotmail.com [65.54.169.38]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id GAA28923; Fri, 10 Mar 2006 06:44:25 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Fri, 10 Mar 2006 03:43:54 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Fri, 10 Mar 2006 11:43:51 GMT X-Originating-IP: [141.149.211.231] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: Planets In The Vortex Date: Fri, 10 Mar 2006 06:43:51 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 10 Mar 2006 11:43:54.0641 (UTC) FILETIME=[E8CF0810:01C64437] Sender: owner-public@setileague.org Precedence: bulk EXO WORLDS - Planets In The Vortex http://www.spacedaily.com/reports/Planets_In_The_Vortex.html Tucson AZ (SPX) Mar 09, 2006 - "Some people say that I study darkness, not optics," jokes Grover Swartzlander. But it's a kind of darkness that will allow astronomers to see the light. Swartzlander, an associate professor in The University of Arizona College of Optical Sciences, is developing devices that block out dazzling starlight, allowing astronomers to study planets in nearby solar systems. From owner-public@setileague.org Fri Mar 10 17:04:11 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,FORGED_RCVD_HELO autolearn=unavailable version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k2B149EV006637 for ; Fri, 10 Mar 2006 17:04:10 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id TAA19659 for public-list; Fri, 10 Mar 2006 19:56:42 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from krypton2.melitacable.com (smtp.onvol.net [212.56.128.131]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id TAA19594; Fri, 10 Mar 2006 19:55:51 -0500 (EST) Received: from vol.net.mt (ppp-130-159-dial3.as.vol.net.mt [212.56.130.159]) by krypton2.melitacable.com (8.12.11/8.12.11) with ESMTP id k2B0rmwL029005; Sat, 11 Mar 2006 01:53:49 +0100 (CET) Message-ID: <44121EB5.FF8A1179@vol.net.mt> Date: Sat, 11 Mar 2006 01:49:57 +0100 From: Alex Michael Bonnici X-Mailer: Mozilla 4.75 [en] (Win95; U) X-Accept-Language: en MIME-Version: 1.0 To: ACC LIST , Carl Sagan List , setipublic , BioAstro , SSI List , "transhumantech@yahoogroups.com" , FPSpace Subject: SETI public: Science Fiction in the News: Technovelgy, Atomic Rockets, and Starships! Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-public@setileague.org Precedence: bulk Hello Gang, Here is a website sure to tickle your fancy; Its entitled "Technovelgy". where you can "Explore the wide variety of inventions and ideas of science fiction writers - over 975 are available on Technovelgy (that's tek-novel-gee!). Use the Timeline of Science Fiction Invention or the alphabetic Glossary of Science Fiction Technology to see them all, look for the category that interests you, browse by favorite author / book or check Science Fiction in the News and watch sf come to life." http://www.technovelgy.com/ Another two website you should check out are Atomic Rocket, where you can find out everything you ever wanted to know about Rockets at: http://www.projectrho.com/rocket/index.html and 3D-Star Maps, which contains everything lots of info on stellar cartography at: http://www.projectrho.com/starmap.html , both created by Winchell D. Chung Jr. http://www.projectrho.com/ Finally for the best in Spaceship/Science Fiction Art, a science fiction web site dedicated to spaceships in art, science and literature. Depicting famous spacecraft from Yesteryear, check out http://www.starships.com/ Hope you all enjoy these sites as much as I did, Yours truly, Alex Michael Bonnici From owner-public@setileague.org Fri Mar 10 17:34:43 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,FORGED_RCVD_HELO autolearn=unavailable version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k2B1YgcK006783 for ; Fri, 10 Mar 2006 17:34:43 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id UAA20564 for public-list; Fri, 10 Mar 2006 20:28:34 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from krypton2.melitacable.com (smtp.onvol.net [212.56.128.131]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id UAA20538; Fri, 10 Mar 2006 20:28:04 -0500 (EST) Received: from vol.net.mt (ppp-130-121-dial3.as.vol.net.mt [212.56.130.121]) by krypton2.melitacable.com (8.12.11/8.12.11) with ESMTP id k2B1Q6pc009155; Sat, 11 Mar 2006 02:26:08 +0100 (CET) Message-ID: <44122649.4039EABF@vol.net.mt> Date: Sat, 11 Mar 2006 02:22:17 +0100 From: Alex Michael Bonnici X-Mailer: Mozilla 4.75 [en] (Win95; U) X-Accept-Language: en MIME-Version: 1.0 To: FPSpace , Carl Sagan List , ACC LIST , "spacesettlers@yahoogroups.com" , SSI List , setipublic , BioAstro Subject: SETI public: GUT Drives and Other Advanced Propulsion Systems Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Sender: owner-public@setileague.org Precedence: bulk Hello Again Gang, If you ever wondered how GUT Drives, made famous by British Science Fiction Author Stephen A. Baxter, and other futuristic propulsion systems, may just possibly work check out the follow website: http://spectech.bravepages.com/interstellar%20flight/IF_Article_GUT%20DRIVES.htm from http://spectech.bravepages.com/ Enjoy, Alex Michael Bonnici GUT stands for Grand Unification Theory. GUT drives have had many different incarnations and names, including vacuum energy engines, casimir drives, zero-point propulsion, and more. GUT drives of one form or another have appeared in a variety of science fiction sources, such as the novel The Songs of Distant Earth by Arthur C. Clarke, many "Xeelee" stories by Stephen Baxter, many "Known Space" stories by Larry Niven, and in driving the ships of the ancient, alien Vorlon and Shadow races in the Babylon 5 TV series. The search for a Grand Unification Theory has been the holy grail of physics for nearly a century now, a single, eloquent series of equations that would tie together quantum physics and the theories of relativity. It would explain once and for all the origin and behavior of the four fundamental forces of nature (gravity, electrmagnetism, the strong nuclear force, and the weak nuclear force) as well as a number of loose quantum phenomena, most significantly virtual particles and zero-point energy. GUT is also assumed to be a precursor for some other speculative propulsion technologies, such as gravitic propulsion schemes and FTL drives, but those will be discussed in their own sections. The real life physics that form the basis for the speculation about these propulsion schemes is very involved and not for the uninitiated. The summaries below are very simplified versions. See the "Related Information" section below for references that can much more fully explain the quantum physics involved. GUT drives rest on the startling fact that a vacuum is not empty--it is actually seething with virtual particles and quantum fluctuations. The particles "borrow" energy from the vacuum via Heisenberg’s Uncertainty Principle and pop into existence in particle/antiparticle pairs. They survive for a few brief microseconds or less, and then annihilate each other again, returning the energy they "borrowed" to the fabric of spacetime. Because the energy is always returned, the net energy of a vacuum is zero, and thus to us appears empty. The existence of this virtual particle soup and zero-point energy has been confirmed by experimental evidence, as the amount of attraction registered on two closely-suspended electrically charged metal plates, when all other factors were neutralized or accounted for. This force is called the Casimir Effect. From owner-public@setileague.org Tue Mar 14 07:29:59 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=AWL,BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k2EFTvQ7007566 for ; Tue, 14 Mar 2006 07:29:58 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id KAA09483 for public-list; Tue, 14 Mar 2006 10:21:00 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f20.bay114.hotmail.com [65.54.169.30]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id KAA09476; Tue, 14 Mar 2006 10:20:57 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Tue, 14 Mar 2006 07:20:21 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Tue, 14 Mar 2006 15:20:18 GMT X-Originating-IP: [24.39.94.195] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: 3 papers, including Habitability of known exoplanetary systems based on measured Date: Tue, 14 Mar 2006 10:20:18 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 14 Mar 2006 15:20:21.0778 (UTC) FILETIME=[CF65DF20:01C6477A] Sender: owner-public@setileague.org Precedence: bulk Astrophysics, abstract astro-ph/0603200 From: Barrie W. Jones [view email] Date: Wed, 8 Mar 2006 16:10:24 GMT (475kb) Habitability of known exoplanetary systems based on measured stellar properties Authors: Barrie W Jones, P Nick Sleep, David R Underwood Comments: Being refereed We have used the measured properties of the stars in the known exoplanetary systems to estimate their present habitability, and compared the outcome with earlier work, where we used a stellar evolution model to determine habitability throughout the main-sequence phase. This is to see whether the results are sensitive to stellar properties. The stellar properties in both pieces of work have been used to determine the present location of the classical habitable zone (HZ). To establish habitability, we estimate the critical distances from the giant planet(s) within which an Earth-mass planet would suffer large orbital changes. We then evaluate the present habitability of each exoplanetary system by examining the penetration of these critical distances into the HZ. For the present population of exoplanetary systems the results are insensitive to whether the evolutionary stellar model is used or measured stellar properties. http://arxiv.org/abs/astro-ph/0603200 Astrophysics, abstract astro-ph/0603196 From: Richard P. Nelson [view email] Date: Wed, 8 Mar 2006 13:08:15 GMT (499kb) Disk-Planet Interactions During Planet Formation Authors: J. C. B. Papaloizou, R. P. Nelson, W. Kley, F. S. Masset, P. Artymowicz Comments: 14 pages, 14 figures, to appear in "Protostars and Planets V". A version with high resolution figures is available from this http URL The discovery of close orbiting extrasolar giant planets led to extensive studies of disk planet interactions and the forms of migration that can result as a means of accounting for their location. Early work established the type I and type II migration regimes for low mass embedded planets and high mass gap forming planets respectively. While providing an attractive means of accounting for close orbiting planets intially formed at several AU, inward migration times for objects in the earth mass range were found to be disturbingly short, making the survival of giant planet cores an issue. Recent progress in this area has come from the application of modern numerical techniques which make use of up to date supercomputer resources. These have enabled higher resolution studies of the regions close to the planet and the initiation of studies of planets interacting with disks undergoing MHD turbulence. This work has led to indications of how the inward migration of low to intermediate mass planets could be slowed down or reversed. In addition, the possibility of a new very fast type III migration regime, that can be directed inwards or outwards, that is relevant to partial gap forming planets in massive disks has been investigated. http://arxiv.org/abs/astro-ph/0603196 Astrophysics, abstract astro-ph/0603179 From: Lucio Mayer [view email] Date: Wed, 8 Mar 2006 20:25:18 GMT (582kb) Gravitational Instabilities in Gaseous Protoplanetary Disks and Implications for Giant Planet Formation Authors: Richard Durisen (Indiana University), Alan Boss (Carnegie Institution of Washington), Lucio Mayer (ETH Zurich), Andy Nelson (LANL), Thomas Quinn (University of Washington), Ken Rice (University of Edinburgh) Comments: 17 pages, 7 figures, Invited Review Chapter to appear on Protostars and Planets V. A version with high resolution figures can be found at this http URL: http://www.exp-astro.phys.ethz.ch/mayer/ppv.ps Protoplanetary gas disks are likely to experience gravitational instabilites (GI's) during some phase of their evolution. Density perturbations in an unstable disk grow on a dynamic time scale into spiral arms that produce efficient outward transfer of angular momentum and inward transfer of mass through gravitational torques. In a cool disk with rapid enough cooling, the spiral arms in an unstable disk form self-gravitating clumps. Whether gas giant protoplanets can form by such a disk instability process is the primary question addressed by this review. We discuss the wide range of calculations undertaken by ourselves and others using various numerical techniques, and we report preliminary results from a large multi-code collaboration. Additional topics include -- triggering mechanisms for GI's, disk heating and cooling, orbital survival of dense clumps, interactions of solids with GI-driven waves and shocks, and hybrid scenarios where GI's facilitate core accretion. The review ends with a discussion of how well disk instability and core accretion fare in meeting observational constraints. http://arxiv.org/abs/astro-ph/0603179 From owner-public@setileague.org Tue Mar 14 07:33:57 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=AWL,BAYES_00, MSGID_FROM_MTA_HEADER autolearn=unavailable version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k2EFXvVt007614 for ; Tue, 14 Mar 2006 07:33:57 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id KAA09554 for public-list; Tue, 14 Mar 2006 10:23:11 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f20.bay114.hotmail.com [65.54.169.30]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id KAA09550; Tue, 14 Mar 2006 10:23:09 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Tue, 14 Mar 2006 07:22:36 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Tue, 14 Mar 2006 15:22:30 GMT X-Originating-IP: [24.39.94.195] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: 3 more papers, including HD 98618: A Star Closely Resembling our Sun Date: Tue, 14 Mar 2006 10:22:30 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 14 Mar 2006 15:22:36.0571 (UTC) FILETIME=[1FBDA6B0:01C6477B] Sender: owner-public@setileague.org Precedence: bulk Astrophysics, abstract astro-ph/0603194 From: Maria Rosa Zapatero Osorio [view email] Date: Wed, 8 Mar 2006 12:47:47 GMT (66kb) Spectroscopic rotational velocities of brown dwarfs Authors: M. R. Zapatero Osorio, E. L. Martin, H. Bouy, R. Tata, R. Deshpande, R. Wainscoat Comments: Submitted to ApJ. Will be replaced by the revised version when accepted We have obtained projected rotation velocities (vsini) of a sample of 19 ultracool dwarfs with spectral types in the interval M6.5-T8 using high-resolution, near-infrared spectra obtained with NIRSPEC and the Keck II telescope. Among our targets there are two young brown dwarfs, two likely field stars, and fifteen likely brown dwarfs (30-72 Mjup) of the solar neighborhood. Our results indicate that both L- and T-type dwarfs are fast rotators in marked contrast to M-type stars. We have derived vsini velocities between <15 and 40 km/s for the T-type objects in our sample, and have found no clear evidence for T dwarfs rotating faster than L dwarfs. However, there is a hint for an increasing lower envelope towards cooler spectral types in the vsini-spectral type diagram. Assuming that field brown dwarfs have a size of 0.09 Rsol, we can place an upper limit of 12.5 h on the equatorial rotation period of T-type brown dwarfs. In addition, we have compared our vsini measurements to spectroscopic rotational velocities of very young brown dwarfs of similar mass available in the literature. The comparison, although model-dependent, suggests that brown dwarfs lose some angular momentum during their contraction; however, their spin down time seems to be significantly longer than that of solar-type to early-M stars. http://arxiv.org/abs/astro-ph/0603194 Astrophysics, abstract astro-ph/0603219 From: Jorge Melendez [view email] Date: Thu, 9 Mar 2006 03:05:17 GMT (24kb) HD 98618: A Star Closely Resembling our Sun Authors: Jorge Melendez (1,2), Katie Dodds-Eden (1), Jose A. Robles (1) (1) RSAA/Mt Stromlo Observatory (Australia), (2) Caltech (USA), UNMSM (Peru) Comments: ApJ letters, in press Despite the observational effort carried out in the last few decades, no perfect solar twin has been found to date. An important milestone was achieved a decade ago by Porto de Mello & da Silva, who showed that 18 Sco is almost a solar twin. In the present work, we use extremely high resolution (R = 10^5) high S/N Keck HIRES spectra to carry out a differential analysis of sixteen solar twin candidates. We show that HD 98618 is the second closest solar twin, and that the fundamental parameters of both HD 98618 and 18 Sco are very similar (within a few percent) to the host star of our solar system, including the likelihood of hosting a terrestrial planet within their habitable zone. We suggest that these stars should be given top priority in exoplanet and SETI surveys. http://arxiv.org/abs/astro-ph/0603219 Astrophysics, abstract astro-ph/0603235 From: Kristen Menou [view email] Date: Thu, 9 Mar 2006 14:59:54 GMT (74kb) Diffusive Migration of Low-Mass Proto-planets in Turbulent Disks Authors: Eric T. Johnson (Princeton), Jeremy Goodman (Princeton), Kristen Menou (Columbia) Comments: 31 pages, 7 figures, submitted to ApJ Torque fluctuations due to magnetorotational turbulence in proto-planetary disks may greatly influence the migration patterns and survival probabilities of nascent planets. Provided that the turbulence is a stationary stochastic process with finite amplitude and correlation time, the resulting diffusive migration can be described with a Fokker-Planck equation, which we reduce to an advection-diffusion equation. We calibrate the coefficients with existing turbulent-disk simulations and mean-migration estimates, and solve the equation both analytically and numerically. Diffusion tends to dominate over advection for planets of low-mass and those in the outer regions of proto-planetary disks, whether they are described by the Minimum Mass Solar Nebula (MMSN) or by T-Tauri alpha disks. Diffusion systematically reduces the lifetime of most planets, yet it allows a declining fraction of them to survive for extended periods of time at large radii. Mean planet lifetimes can even be formally infinite (e.g. in an infinite steady MMSN), though median lifetimes are always finite. Surviving planets may linger near specific radii where the combined effects of advection and diffusion are minimized, or at large radii, depending on model specifics. The stochastic nature of migration in turbulent disks challenges deterministic planet formation scenarios and suggests instead that a wide variety of planetary outcomes are possible from similar initial conditions. This would contribute to the diversity of (extrasolar) planetary systems. http://arxiv.org/abs/astro-ph/0603235 From owner-public@setileague.org Wed Mar 15 04:23:45 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=AWL,BAYES_00, MSGID_FROM_MTA_HEADER autolearn=unavailable version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k2FCNjrV024167 for ; Wed, 15 Mar 2006 04:23:45 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id HAA12202 for public-list; Wed, 15 Mar 2006 07:18:57 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f13.bay114.hotmail.com [65.54.169.23]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id HAA12198; Wed, 15 Mar 2006 07:18:55 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 15 Mar 2006 04:18:24 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Wed, 15 Mar 2006 12:18:21 GMT X-Originating-IP: [68.238.85.16] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: 2 papers on new exoplanets - and are small exoworlds more common? Date: Wed, 15 Mar 2006 07:18:21 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 15 Mar 2006 12:18:24.0431 (UTC) FILETIME=[8E90ABF0:01C6482A] Sender: owner-public@setileague.org Precedence: bulk Astrophysics, abstract astro-ph/0603276 From: Andrew Gould [view email] Date: Fri, 10 Mar 2006 22:11:19 GMT (164kb) Microlens OGLE-2005-BLG-169 Implies Cool Neptune-Like Planets are Common Authors: A. Gould, A. Udalski, D. An, D.P. Bennett, A.-Y. Zhou, S. Dong, N.J. Rattenbury, B.S. Gaudi, P.C.M. Yock, I.A. Bond, G.W. Christie, K. Horne, J. Anderson, K.Z. Stanek, D.L. DePoy, C. Han, J. McCormick, B.-G. Park, R.W. Pogge, S.D. Poindexter, I. Soszynski, M.K. Szymanski, M. Kubiak, G. Pietrzynski, O. Szewczyk, L. Wyrzykowski, K. Ulaczyk, B. Paczynski, D.M. Bramich, C. Snodgrass, I.A. Steele, M.J. Burgdorf, M.F. Bode, C.S. Botzler, S. Mao, S.C. Swaving (The MicroFUN, OGLE, and PLANET/RoboNet collaborations) Comments: Submitted to ApJ Letters, 9 text pages + 4 figures + 1 table We detect a Neptune mass-ratio (q~8e-5) planetary companion to the lens star in the extremely high-magnification (A~800) microlensing event OGLE-2005-BLG-169. If the parent is a main-sequence star, it has mass M~0.5 M_sun implying a planet mass of ~13 M_earth and projected separation of ~2.7 AU. When intensely monitored over their peak, high-magnification events similar to OGLE-2005-BLG-169 have nearly complete sensitivity to Neptune mass-ratio planets with projected separations of 0.6 to 1.6 Einstein radii, corresponding to 1.6--4.3 AU in the present case. Only two other such events were monitored well enough to detect Neptunes, and so this detection by itself suggests that Neptune mass-ratio planets are common. Moreover, another Neptune was recently discovered at a similar distance from its parent star in a low-magnification event, which are more common but are individually much less sensitive to planets. Combining the two detections yields 90% upper and lower frequency limits f=0.37^{+0.30}_{-0.21} over just 0.4 decades of planet-star separation. In particular, f>16% at 90% confidence. The parent star hosts no Jupiter-mass companions with projected separations within a factor 5 of that of the detected planet. The lens-source relative proper motion is \mu~7--10 mas/yr, implying that if the lens is sufficiently bright, I<23.8, it will be detectable by HST by 3 years after peak. This would permit a more precise estimate of the lens mass and distance, and so the mass and projected separation of the planet. Analogs of OGLE-2005-BLG-169Lb orbiting nearby stars would be difficult to detect by other methods of planet detection, including radial velocities, transits, or astrometry. http://fr.arxiv.org/abs/astro-ph/0603276 Astrophysics, abstract astro-ph/0603291 From: Gaspar Bakos A [view email] Date: Sun, 12 Mar 2006 22:36:03 GMT (117kb) Refined parameters of the planet orbiting HD 189733 Authors: G. A. Bakos (1,2), H. Knutson (1), F. Pont (5), C. Moutou (3), D. Charbonneau (1), A. Shporer (8), F. Bouchy (4,10), M. Everett (6), C. Hergenrother (7), D. W. Latham (1), M. Mayor (5), T. Mazeh (8), R. W. Noyes (1), D. Queloz (5), A. Pal (9,1), S. Udry (5) ((1) Harvard-Smithsonian Center for Astrophysics, (2) Hubble Fellow, (3) Laboratoire d'Astrophysique de Marseille, (4) Observatoire de Haute Provence, (5) Observatoire de Geneve, (6) Planetary Science Institute, (7) Dep. of Planetary Sciences and Lunar and Planetary Laboratory, UofA, (8) Wise Observatory, Tel Aviv University, (9) Eotvos Lorand University, Department of Astronomy, (10) Institut d'Astrophysique de Paris) Comments: 10 pages, 4 figures, submitted to ApJ We report on the BVRI multi-band follow-up photometry of the transiting extrasolar planet HD 189733b. We revise the transit parameters and find planetary radius RP = 1.154+/- 0.032RJ and inclination i_P = 85.79+/-0.24deg. The new density (~ 1g cm-3) is significantly higher than the former estimate (~ 0.75g cm-3); this shows that from the current sample of 9 transiting planets, only HD 209458 (and possibly OGLE-10b) have anomalously large radii and low densities. We note that due to the proximity of the parent star, HD 189733b currently has one of the most precise radius determinations among extrasolar planets. We calculate new ephemerides: P = 2.218573+/-0.000020 days, T0 = 2453629.39420+/-0.00024 (HJD), and estimate the timing offsets of the 11 distinct transits with respect to the predictions of a constant orbital period, which can be used to reveal the presence of additional planets in the system. http://fr.arxiv.org/abs/astro-ph/0603291 From owner-public@setileague.org Wed Mar 15 04:41:30 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=AWL,BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k2FCfTjG024348 for ; Wed, 15 Mar 2006 04:41:29 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id HAA12735 for public-list; Wed, 15 Mar 2006 07:36:16 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f11.bay114.hotmail.com [65.54.169.21]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id HAA12731; Wed, 15 Mar 2006 07:36:14 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 15 Mar 2006 04:35:43 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Wed, 15 Mar 2006 12:35:41 GMT X-Originating-IP: [68.238.85.16] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: Chaplygin traversable wormholes V2 Date: Wed, 15 Mar 2006 07:35:41 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 15 Mar 2006 12:35:43.0142 (UTC) FILETIME=[F9AF6460:01C6482C] Sender: owner-public@setileague.org Precedence: bulk General Relativity and Quantum Cosmology, abstract gr-qc/0511003 From: Francisco Lobo [view email] Date (v1): Tue, 1 Nov 2005 15:03:16 GMT (21kb) Date (revised v2): Sat, 11 Mar 2006 10:50:01 GMT (23kb) Chaplygin traversable wormholes Authors: Francisco S. N. Lobo Comments: 9 pages, 2 figures, Revtex4. V2: Considerable comments and references added, now 10 pages The generalized Chaplygin gas (GCG) is a candidate for the unification of dark energy and dark matter, and is parametrized by an exotic equation of state given by $p_{ch}=-A/\rho_{ch}^{\alpha}$, where $A$ is a positive constant and $0<\alpha \leq 1$. In this paper, exact solutions of spherically symmetric traversable wormholes supported by the GCG are found, possibly arising from a density fluctuation in the GCG cosmological background. To be a solution of a wormhole, the GCG equation of state imposes the following generic restriction $A<(8\pi r_0^2)^{-(1+\alpha)}$, where $r_0$ is the wormhole throat radius, consequently violating the null energy condition. The spatial distribution of the exotic GCG is restricted to the throat neighborhood, and the physical properties and characteristics of these Chaplygin wormholes are further analyzed. Four specific solutions are explored in some detail, namely, that of a constant redshift function, a specific choice for the form function, a constant energy density, and finally, isotropic pressure Chaplygin wormhole geometries. http://arxiv.org/abs/gr-qc/0511003 From owner-public@setileague.org Wed Mar 15 07:34:36 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=AWL,BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k2FFYa1O025316 for ; Wed, 15 Mar 2006 07:34:36 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id KAA17262 for public-list; Wed, 15 Mar 2006 10:28:30 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f37.bay114.hotmail.com [65.54.169.47]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id KAA17258; Wed, 15 Mar 2006 10:28:28 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 15 Mar 2006 07:27:56 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Wed, 15 Mar 2006 15:27:51 GMT X-Originating-IP: [24.39.94.195] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: Programming the Universe - The Universe as the Ultimate Computer? Date: Wed, 15 Mar 2006 10:27:51 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 15 Mar 2006 15:27:56.0881 (UTC) FILETIME=[0912D410:01C64845] Sender: owner-public@setileague.org Precedence: bulk ************************* Life, the Universe, and Everything Wired March 2006 ************************* Atoms and electrons are bits. Atomic collisions are "ops." Machine language is the laws of physics. The universe is a quantum computer. So says Seth Lloyd in is new book, Programming the Universe. "The universe is a system where the very specific details and structures in it are created when quantum bits de-cohere -- choose one path out of... http://www.kurzweilai.net/email/newsRedirect.html?newsID=5382&m=7610 ************************* Supercomputer builds a virus news@nature.com March 14, 2006 ************************* One of the world's most powerful supercomputers has built a computer model of the satellite tobacco mosaic virus. The researchers say the simulation is the first to capture a whole biological organism in such intricate molecular detail. Running on a machine at the National Center for Supercomputing Applications, Urbana, the program... http://www.kurzweilai.net/email/newsRedirect.html?newsID=5381&m=7610 From owner-public@setileague.org Wed Mar 15 08:21:25 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=AWL,BAYES_00, MSGID_FROM_MTA_HEADER autolearn=unavailable version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k2FGLOkJ025706 for ; Wed, 15 Mar 2006 08:21:24 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id LAA18618 for public-list; Wed, 15 Mar 2006 11:15:17 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f37.bay114.hotmail.com [65.54.169.47]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id LAA18613; Wed, 15 Mar 2006 11:15:15 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 15 Mar 2006 08:14:44 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Wed, 15 Mar 2006 16:14:40 GMT X-Originating-IP: [24.39.94.195] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: Black holes: The ultimate quantum computers? Date: Wed, 15 Mar 2006 11:14:40 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 15 Mar 2006 16:14:44.0146 (UTC) FILETIME=[92557920:01C6484B] Sender: owner-public@setileague.org Precedence: bulk Black holes: The ultimate quantum computers? NewScientist.com news service Mar. 13, 2006 ************************* Nearly all of the information that falls into a black hole escapes back out, a controversial new study argues. The work suggests that black holes could one day be used as incredibly accurate quantum computers -- if enormous theoretical and practical hurdles can first be overcome. Seth Lloyd of MIT has used a controversial quantum model, which... http://www.kurzweilai.net/email/newsRedirect.html?newsID=5373&m=7610 From owner-public@setileague.org Wed Mar 15 14:14:56 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=AWL,BAYES_00, MSGID_FROM_MTA_HEADER autolearn=unavailable version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k2FMEucX030086 for ; Wed, 15 Mar 2006 14:14:56 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id RAA27882 for public-list; Wed, 15 Mar 2006 17:09:41 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f31.bay114.hotmail.com [65.54.169.41]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id RAA27878; Wed, 15 Mar 2006 17:09:39 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 15 Mar 2006 14:09:07 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Wed, 15 Mar 2006 22:09:03 GMT X-Originating-IP: [24.39.94.195] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: Measurements of Vega Consistent with a Pole-On, Rapidly Rotating Star Date: Wed, 15 Mar 2006 17:09:03 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 15 Mar 2006 22:09:07.0792 (UTC) FILETIME=[14745D00:01C6487D] Sender: owner-public@setileague.org Precedence: bulk Astrophysics, abstract astro-ph/0603327 From: Jason P. Aufdenberg [view email] Date: Mon, 13 Mar 2006 21:13:17 GMT (973kb) First Results from the CHARA Array VII: Long-Baseline Interferometric Measurements of Vega Consistent with a Pole-On, Rapidly Rotating Star Authors: J. P. Aufdenberg, A. Merand, V. Coude du Foresto, O. Absil, E. Di Folco, P. Kervella, S. T. Ridgway, D. H. Berger, T. A. ten Brummelaar, H. A. McAlister, J. Sturmann, L. Sturmann, N. H. Turner Comments: 16 pages, 9 figures, accepted by ApJ We have obtained high-precision interferometric measurements of Vega with the CHARA Array and FLUOR beam combiner in the K' band at projected baselines between 103m and 273m. The measured visibility amplitudes beyond the first lobe are significantly weaker than expected for a slowly rotating star characterized by a single effective temperature and surface gravity. Our measurements, when compared to synthetic visibilities and synthetic spectrophotometry from a Roche-von Zeipel gravity-darkened model atmosphere, provide strong evidence for the model of Vega as a rapidly rotating star viewed very nearly pole-on. Our best fitting model indicates that Vega is rotating at ~91% of its angular break-up rate with an equatorial velocity of 275 km/s. Together with the measured vsin(i), this velocity yields an inclination for the rotation axis of 5 degrees. For this model the pole-to-equator effective temperature difference is 2250 K, a value much larger than previously derived from spectral line analyses. The derived equatorial T_eff of 7900 K indicates Vega's equatorial atmosphere may be convective and provides a possible explanation for the discrepancy. The model has a luminosity of ~37 Lsun, a value 35% lower than Vega's apparent luminosity based on its bolometric flux and parallax, assuming a slowly rotating star. The model luminosity is consistent with the mean absolute magnitude of A0V stars. Our model predicts the spectral energy distribution of Vega as viewed from its equatorial plane; a model which may be employed in radiative models for the surrounding debris disk. http://arxiv.org/abs/astro-ph/0603327 From owner-public@setileague.org Wed Mar 15 14:23:02 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=AWL,BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k2FMN2Bi030119 for ; Wed, 15 Mar 2006 14:23:02 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id RAA28165 for public-list; Wed, 15 Mar 2006 17:18:14 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f34.bay114.hotmail.com [65.54.169.44]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id RAA28159; Wed, 15 Mar 2006 17:18:12 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 15 Mar 2006 14:17:40 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Wed, 15 Mar 2006 22:17:36 GMT X-Originating-IP: [24.39.94.195] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: High eccentricity planets from the Anglo-Australian Planet Search Date: Wed, 15 Mar 2006 17:17:36 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 15 Mar 2006 22:17:40.0687 (UTC) FILETIME=[4629EDF0:01C6487E] Sender: owner-public@setileague.org Precedence: bulk Astrophysics, abstract astro-ph/0603335 From: Hugh R. A. Jones [view email] Date: Tue, 14 Mar 2006 02:13:30 GMT (306kb) High eccentricity planets from the Anglo-Australian Planet Search Authors: Hugh R. A. Jones, R. Paul Butler, C.G. Tinney, Geoffrey W. Marcy, Brad D. Carter, Alan J. Penny, Chris McCarthy, Jeremy Bailey Comments: to appear in MNRAS We report Doppler measurements of the stars HD187085 and HD20782 which indicate two high eccentricity low-mass companions to the stars. We find HD187085 has a Jupiter-mass companion with a ~1000d orbit. Our formal `best fit' solution suggests an eccentricity of 0.47, however, it does not sample the periastron passage of the companion and we find that orbital solutions with eccentricities between 0.1 and 0.8 give only slightly poorer fits (based on RMS and chi^2) and are thus plausible. Observations made during periastron passage in 2007 June should allow for the reliable determination of the orbital eccentricity for the companion to HD187085. Our dataset for HD20782 does sample periastron and so the orbit for its companion can be more reliably determined. We find the companion to HD20782 has M sin i=1.77+/-0.22M_JUP, an orbital period of 595.86+/-0.03d and an orbit with an eccentricity of 0.92+/-0.03. The detection of such high-eccentricity (and relatively low velocity amplitude) exoplanets appears to be facilitated by the long-term precision of the Anglo-Australian Planet Search. Looking at exoplanet detections as a whole, we find that those with higher eccentricity seem to have relatively higher velocity amplitudes indicating higher mass planets and/or an observational bias against the detection of high eccentricity systems. http://arxiv.org/abs/astro-ph/0603335 From owner-public@setileague.org Thu Mar 16 04:28:50 2006 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on Sentry.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=AWL,BAYES_00, MSGID_FROM_MTA_HEADER autolearn=ham version=3.1.0 Received: from seti1.setileague.org (seti1.setileague.org [204.176.91.10]) by Sentry.net (8.13.3/8.13.3) with ESMTP id k2GCSnmi002603 for ; Thu, 16 Mar 2006 04:28:49 -0800 Received: (from majordom@localhost) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) id HAA20072 for public-list; Thu, 16 Mar 2006 07:26:35 -0500 (EST) X-Authentication-Warning: seti1.setileague.org: majordom set sender to owner-public@seti1.setileague.org using -f Received: from hotmail.com (bay114-f32.bay114.hotmail.com [65.54.169.42]) by seti1.setileague.org (8.9.3 (PHNE_24419+JAGae58098)/8.9.3) with ESMTP id HAA20068; Thu, 16 Mar 2006 07:26:32 -0500 (EST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Thu, 16 Mar 2006 04:25:57 -0800 Message-ID: Received: from 65.54.169.200 by by114fd.bay114.hotmail.msn.com with HTTP; Thu, 16 Mar 2006 12:25:52 GMT X-Originating-IP: [68.238.81.157] X-Originating-Email: [ljk4@msn.com] X-Sender: ljk4@msn.com From: "LARRY KLAES" To: public@setileague.org Subject: SETI public: 5 papers on protoplanetary and circumstellar disks Date: Thu, 16 Mar 2006 07:25:52 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 16 Mar 2006 12:25:57.0608 (UTC) FILETIME=[C717BE80:01C648F4] Sender: ow