From: LARRY KLAES (ljk4_at_msn.com)
Date: Mon Oct 27 2003 - 11:04:26 PST
----- Original Message -----
From: Makoto Uemura
Sent: Monday, October 27, 2003 1:21 PM
To: AstroAlert
Cc: vsnet-adm_at_ooruri.kusastro.kyoto-u.ac.jp
Subject: AstroAlert: News from VSNET
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This Is SKY & TELESCOPE's AstroAlert for Variable Stars
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*** News from VSNET ***
DE Cir (= Nova Cir 2003) is rapidly fading.
For more detail information about these objects,
see below, "VSNET Weekly Campaign Summary" of the last week.
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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
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The following was issued on October 27, 2003, as VSNET campaign
circulation 1419
[Note a large part of detailed information is posted to vsnet-campaign
sub-lists].
VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
SN 2003ix (RA = 07h14m25s.72, Dec = +55d08'53".4)
SN 2003ix is hosted by UGC 3746, a spiral galaxy within a group
(or cluster) of galaxies. The expected maximum for typical SN Ia
is mag about 16.9 (vsnet-campaign-sn 714). The UCB team revealed
that it was a type Ia SN, a few weeks after maximum (Oct. 23
spectrum) (vsnet-campaign-sn 716).
SS Cyg (RA = 21h42m42s.8, Dec = +43d35'10")
SS Cyg experienced an anomalous outburst (slowly rising
outburst) (vsnet-campaign-dn 4018).
Var75 Cep (RA = 20h46m38s.66, Dec = +60d38'03".6)
Var76 Cyg (RA = 22h02m41s.84, Dec = +46d39'06".9)
According to IBVS 5461, Antipin and Kroll report on the discovery
of two new dwarf novae shown above (vsnet-campaign-dn 4019).
V364 Peg (RA = 21h12m29s.5, Dec = +12d32'07")
P. Schmeer reported a possible outburst of V364 Peg
(vsnet-campaign-dn 4020).
SN 2003iy (RA = 16h21m43s.22, Dec = +55d05'05".2)
SN 2003iy is hosted by NGC 6143, a spiral galaxy. The expected
maximum for typical SN Ia is mag about 15.9, based on the NED
recession velocity (5310 km/s). Note that RC3 has very smaller
(1595 km/s) value (vsnet-campaign-sn 715). The UCB team revealed
that it is a young type-II SN (Oct. 23 spectrum) (vsnet-campaign-sn
716).
SN 2003iz (RA = 01h02m06s.75, Dec = +26d56'21".3)
SN 2003iz is hosted by UGC 638, a giant-elliptical galaxy which is
the center of the cluster CID 04. From the morphology of the host
galaxy, it would be a type Ia SN, whose expected maximum is
consistent with the discovery magnitudes (18.3-17.7mag)
(vsnet-campaign-sn 715). The UCB team (Oct. 23 spectrum) and the
CfA team (Oct. 23.28 spectrum) showed that it was indeed a SN Ia,
several days after maximum light (vsnet-campaign-sn 716).
SN 2003ja (RA = 02h12m11s.81, Dec = +44d34'20".8)
SN 2003ja is hosted by NGC 846, a barred-spiral galaxy. The UCB
team has reported that it is probably a young SN II (Oct. 23
spectrum) (vsnet-campaign-sn 716).
V844 Her (RA = 16h25m01s.69, Dec = +39d09'25".9)
A possible superoutburst was reported on October 23. The last
superoutburst was in 2002 December (vsnet-campaign-dn 4021).
The outburst still continues, which indicates a genuine
superoutburst (vsnet-campaign-dn 4023).
SN 2003jb (RA = 14h49m22s.28, Dec = +63d16'06".2)
SN 2003jb is hosted by IC 1065, a lenticular galaxy. The
discovery (and confirmation) magnitude (16.5-15.9mag) is quite
brighter than that expected for the typical SN Ia with the NED
recession velocity (12483 km/s). The spectroscopy and the follow-up
photometry are urged (vsnet-campaign-sn 717).
SN 2002jc (RA = 23h04m53s.34, Dec = -06d32'12".2)
SN 2003jc is hosted by MCG -01-58-18, a spiral galaxy. The SN is
almost superimposed on the bright H II region with several knots.
The CfA team spectroscopy (Oct. 26.22 UT) suggest that it seems to
be an early SN II (vsnet-campaign-sn 717).
SN 2002jd (RA = 23h21m03s.38, Dec = -04d53'45".5)
SN 2003jd is hosted by MCG -01-59-21, a disturbed-spiral galaxy.
The discovery magnitude (16.1-16.0mag) is consistent with the
expected maximum for typical SN Ia (vsnet-campaign-sn 717).
SN 2002je (RA = 08h49m22s.24, Dec = +36d42'56".6 )
SN 2003je is hosted by NGC 2668, a spiral galaxy. The expected
maximum for typical SN Ia is mag about 16.7 (vsnet-campaign-sn 717).
(continuous targets)
SN 2003id (RA = 02h21m35s.70, Dec = -05d31'51".0)
The Carnegue Observatories team continue to monitor SN 2003id. It
has strong unidentified absorption lines, and the expansion velocity
seems to be quite large for the one-month old SN. The light curve
is also peculiar (vsnet-campaign-sn 713).
SN 2003ir (RA = 07h11m08s.18, Dec = +25d54'55".0)
The CfA team revealed that it is a normal type II SN
(vsnet-campaign-sn 712).
SN 2003hr (RA = 08h24m39s.06, Dec = +73d24'23".3)
The UCB team showed that it was a type II SN, several months after
maximum (Oct. 23 spectrum) (vsnet-campaign-sn 716).
MX0656-072 (RA = 06h58m26s.9, Dec = -07d15'47")
According to ATEL #199, XTE J0658-073 (=MX 0656-072) is a pulsar
(vsnet-campaign-xray 274). ATEL #202 (Pakull et al.) reports the
possible optical counterpart of MX0656-072. The object is reported
to have an O9.7Ve spectrum (vsnet-campaign-xray 275).
SN 2003iu (RA = 01h55m24s.55, Dec = +21d17'06".4)
The CfA team reported that it was a type Ia SN near maximum on
Oct. 20.38 UT. The shallowness of Si II 635nm line may indicate
that it would be a luminous SN Ia (vsnet-campaign-sn 712).
SN 2003iw (RA = 21h39m43s.03, Dec = +06d17'03".0)
According to the CfA team, it has a blue and almost featureless
continuum with a week feature around 650 nm (Oct. 20.14 UT). It is
possibly a type II SN caught at the very early phase
(vsnet-campaign-sn 712).
MisV1147 (RA = 22h54m03s.78, Dec = +58d54'02".1)
G. Poyner reported a deep fading to 14.8mag of MisV1147 on October
23 (vsnet-campaign-orion 65). The fading was also detected by the
Kyoto team (vsnet-campaign-orion 66).
DE Cir (RA = 15h17m52s.48, Dec = -61d57'16".4)
The rapid fading continues. It may be a very fast nova
(vsnet-campaign-nova 1547). D. West reviewed the AAVSO and VSNET
observations, and reported that t0(date of outburst) = 05 Oct to 08
Oct 2003, tmax(date of maximum V magnitude) = 09 Oct 2003, V~8.0,
t2(date of two magnitude drop below max V~10) = 11 Oct 2003, and
t3(date of three magnitude drop below max V~11) = 13 Oct 2003
(vsnet-campaign-nova 1548).
V475 Sct (RA = 18h49m37s.60, Dec = -09d33'50".85)
D. West reported that the nova has not entered the nebular phase
(vsnet-campaign-nova 1543). He also reviewed the AAVSO and VSNET
observations and reported t0 = 25 Aug 2003 (date of outburst), tmax
= 1 Sep 2003 (date of maximum V magnitude, V=8.0), and t2 = 23 Sep
2003 (date of 2 magnitude drop from date of maximum)
(vsnet-campaign-nova 1545). It started fading again
(vsnet-campaign-nova 1546).
*** 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 ***
CI Cam
Preprint by M. Ishida et al. (astro-ph/0310616)
[vsnet-campaign-nova 1544]
[vsnet-campaign-xray 273]
(This summary can be cited.)
Regards,
Makoto Uemura
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