SETI public: Fw: AstroAlert: News from VSNET

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From: LARRY KLAES (ljk4_at_msn.com)
Date: Tue Oct 14 2003 - 13:55:38 PDT

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----- Original Message -----
From: Makoto Uemura
Sent: Monday, October 13, 2003 5:14 PM
To: variable-star_at_SkyandTelescope.com
Cc: vsnet-adm_at_ooruri.kusastro.kyoto-u.ac.jp
Subject: AstroAlert: News from VSNET

==================================================================
This Is SKY & TELESCOPE's AstroAlert for Variable Stars
==================================================================

*** News from VSNET ***

Nova Cir 2003 (= DE Cir) was discovered by W. Liller on images taken
on October 9

For more detail information about these objects,
see below, "VSNET Weekly Campaign Summary" of the last week.

---------------------------------------------------------------------------

VSNET (Variable Star Network) is an international variable star observing
network, covering various areas of novae, supernovae, cataclysmic variables
(CVs), X-ray transients, and other classical eruptive, pulsating, and
eclipsing variables. VSNET is one of invited contributing organizations
to the SkyPub AstroAlert system.

The "News from VSNET", mainly focusing on recent remarkable activities of
CVs and related systems, is issued on a weekly basis, except on occasions
of extremely urgent or transient events.

Please refer to the VSNET Home Page for more details of events and
objects listed.

VSNET Home Page: http://www.kusastro.kyoto-u.ac.jp/vsnet/

VSNET provides a number of mailing lists, on which various news and topics
are discussed. Subscriptions to the VSNET mailing lists are free of charge;
please refer to the instruction on the above page if a reader needs more
information of the list structure.

CCD observations of such targets are a relatively easy task for a 20-40cm
telescope; simply take as many CCD frames (with exposure times 10-30 sec)
as possible, spanning several hours per night. The only requirements are
the weather and your patience! If you need more help on the observing
technique, please feel free to ask on the vsnet-campaign list.

We would sincerely appreciate volunteers who would join the VSNET
Collaboration team to study the wonders of these exotic variable stars.
To join the VSNET campaign collaborative list, send an e-mail to

vsnet-adm_at_kusastro.kyoto-u.ac.jp (VSNET administrator)

with a line "SUBSCRIBE vsnet-campaign."
(VSNET campaign members are strongly recommended to subscribe to vsnet-alert
at the same time).

Regards,
Taichi Kato
On behalf of the VSNET administrator team

----------------------------------------------------------------------------

The following was issued on October 13, 2003, as VSNET campaign
circulation 1417
[Note a large part of detailed information is posted to vsnet-campaign
sub-lists].

VSNET Weekly Campaign Summary

*** Last week news ***

(new targets)
DE Cir (RA = 15h17m52s.48, Dec = -61d57'16".4)
= Nova Cir 2003

    W. Liller discovered a possible nova on photographs taken on
  October 9. No star brighter than magnitude 11.0 was seen on images
  taken on October 4 (vsnet-campaign-nova 1508, 1509). N. J. Brown
  confirmed the object at 9.9v mag on October 10.51
  (vsnet-campaign-nova 1511). S. Otero also reported a confirmation
  on October 11 (vsnet-campaign-nova 1515, 1516). W. Liller took a
  spectrum of the object on October 11, and found a strong and broad
  H-alpha emission line whose FWHM was at least 5100 km/s. The nova
  nature of the object has been established with this observation. He
  reported = 10.27 +/- 0.03 and B-V = +0.39 +/- 0.05 on at October
  10.991 (vsnet-campaign-nova 1518, 1525). P. Nelson reported a
  possible short flare at V=8.98 on October 10.6 UT
  (vsnet-campaign-nova 1524, 1526). The nova is now about 10 mag
  (vsnet-campaign-nova 1519, 1520, 1527).

V1113 Cyg (RA = 19h22m38s.62, Dec = +52d43'51".1)

An outburst was reported on October 4 (vsnet-campaign-dn 4001).
The outburst rapidly faded (vsnet-campaign-dn 4004).

GY Cnc (RA = 09h09m50s.5, Dec = +18d49'47")

    E. Muyllaert reported on October 8 that the eclipsing dwarf nova
  GY Cnc is undergoing an outburst (13.9mag) (vsnet-campaign-dn 4003).
  The outburst is now ongoing (vsnet-campaign-dn 4009).

IW And (RA = 01h01m08s.82, Dec = +43d23'27".3)

The object keeps bright for about two weeks. It may be a long
outburst or standstill (vsnet-campaign-dn 4005).

LL And

    A possible outburst was reported on October 9, but not confirmed.
  R. Ishioka reported the object was fainter than 16mag on October 9
  (vsnet-campaign-dn 4006, 4007).

SN 2003iq (RA = 01h59m19s.92, Dec = +17d59'41".8)

    SN 2003iq appears in the same spiral galaxy NGC 772 as SN 2003hl.
  At the discovery, the new object is slightly brighter than SN
  2003hl. The expected maximum for typical SN Ia in this galaxy is
  mag about 14.7 (vsnet-campaign-sn 705).

(continuous targets)
RU Hor (RA = 02h46m05s.38, Dec = -63d35'04".0)

    The object now clearly shows a systematic superhump period change,
  although the period derivative seems to show rather unusual behavior
  (a small initial increase, followed by a rather sudden decrease).
  The changes seem to have occurred with a time scale of 1 day
  (vsnet-campaign-dn 4002).

AG Dra (RA = 16h01m40s.98, Dec = +66d48'10".3)

The outburst is now ongoing. It was reported to be 9.2-9.5mag
(vsnet-campaign-symbio 86).

MisV1147 (RA = 22h54m03s.78, Dec = +58d54'02".1)

The relatively bright state continues. No major fading event was
observed (vsnet-campaign-orion 64).

SV Sge (RA = 19h08m11s.75, Dec = +17d37'41".3)

The object still keeps fading. It was reported at 12.1-12.4mag
during the last week (vsnet-campaign-rcb 165, 167).

RZ Vul (RA = 19h47m14s.7, Dec = +19d29'16")

The object is still in a deep fading state (vsnet-campaign-unknown 256).

CH Cyg (RA = 19h24m33s.07, Dec = +50d14'29".5)

The object has further brightened (vsnet-campaign-symbio 85).

V838 Mon (RA = 07h04m04s.816, Dec = -03d50'50".94)

S. Kiyota's observations show a slight brightening in V-band in
the end of September (vsnet-campaign-v838mon 432, 433).

V585 Lyr (RA = 19h13m58s.5, Dec = +40d44'09")

The object remains faint without no rebrightening during the last
week (vsnet-campaign-dn 4000).

V475 Sct (RA = 18h49m37s.60, Dec = -09d33'50".85)

This nova is fading again (vsnet-campaign-nova 1507, 1521).

*** Future schedule ***

  Call for Proposals
       for Cycle 1 of the Swift Guest Investigator Program
    Notices of Intent due: October 6, 2003
    Proposal due date: December 1, 2003
       [vsnet-campaign-grb 39]
  Stellar-Mass, Intermediate-Mass, and Supermassive Black Holes
    Kyoto International Community House, Kyoto, Japan
    October 28 - 31, 2003
    http://www.astro.isas.ac.jp/conference/bh2003/
[vsnet-campaign-agn 6]
[vsnet-campaign-xray 260]
  ASTRONOMICAL POLARIMETRY
  CURRENT STATUS AND FUTURE DIRECTIONS
    15-19 March 2004, Waikoloa Beach Marriott, Waikoloa, Hawaii
    http://www.jach.hawaii.edu/JACpublic/JAC/pol2004
[vsnet-campaign-polar 35]
  IAU Symposium No. 222 - BHSIGN Conference
    The Interplay among Black Holes, Stars and ISM in Galactic Nuclei
    March 1-5, 2004, Gramado, Brasil
    http://bhsign.if.ufrgs.br/
[vsnet-campaign-agn 5]
  WEBT campaign on AO 0235+16
    Campaign with VLBA conducted by Claudia M. Raiteri
    from September 2003
    see [vsnet-campaign-blazar 305]

  X-RAY AND RADIO CONNECTIONS
    Santa Fe, New Mexico, USA
    3 - 6 February 2004
    http://www.aoc.nrao.edu/events/xraydio/
[vsnet-campaign-xray 258]
  X-Ray Timing 2003: Rossi and Beyond
    November 3-5, 2003
    Harvard-Smithsonian Center for Astrophysics
    http://hea-www.harvard.edu/xrt2003/
[vsnet-campaign-xray 242]
  AR UMa and AM Her campaign with the HST
    TOO program conducted by S. Saar and F. Ringwald
    see [vsnet-campaign-polar 24]

  QS Tel: Call for observations
    TOO program with the Chandra conducted by C. Mauche
    until the end of 2004
    see [vsnet-campaign-polar 28]

  WEBT Campaign for AO 0235+16 with XMM-Newton
    January-February 2004
    please contact to Claudia M. Raiteri,
     see [vsnet-campaign-blazar 301]

  Multiwavelength AGN Surveys
    a "Guillermo Haro" Astrophysics Conference
    organized by INAOE
    December 8-12, 2003
    Cozumel, Mexico
    http://www.inaoep.mx/~agn2003/
[vsnet-campaign-agn 4]

  Conference: THE INTERPLAY AMONG BLACK HOLES, STARS AND ISM IN
  GALACTIC NUCLEI
    in Gramado, south of Brasil, March 1-5, 2004
    for more information, please contact to BHSIGN_at_if.ufrgs.br
[vsnet-campaign-agn 3]
  eta Car: The next "shell event"/X-ray eclipse
    M. Corcoran reported the event will occur this summer.
    Coordinated ground-based observations of eta car along with the
    X-ray observations would be really important.
    For more information:
      Latest X-ray light curve:
      http://lheawww.gsfc.nasa.gov/users/corcoran/eta_car/etacar_rxte_lightcurve/
[vsnet-campaign-sdor 23, 24,
25, 26, 28, 29, 46]
[vsnet-campaign-xray 172]
      Light curve provided by S. Otero:
      http://ar.geocities.com/varsao/Curva_Eta_Carinae.htm
[vsnet-campaign-sdor 22, 32, 33]

*** General information ***

(This summary can be cited.)

Regards,
Makoto Uemura
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