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[vsnet-campaign-news 177] News from VSNET
*** News from VSNET ***
V4743 Sgr (= Nova Sgr 2002 No. 3) is rapidly fading.
The polar, UW Pic experiences violent oscillations.
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://vsnet.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@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 September 30, 2002, as VSNET campaign
circulation 1341
[Note a large part of detailed information is posted to vsnet-campaign
sub-lists].
VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
UW Pic (RA = 05h31m35s.596, Dec = -46d24'05".54)
B. Monard reported violent oscillations between 14.3 and 15.6mag
with a period of 0.0425d on September 24 (vsnet-campaign-polar 15,
18). H. Yamaoka commented that UW Pic was identified as a northern
star of close (~3" separation) double, and so that precise
astrometry will help to determine which is real violently
oscillating object (vsnet-campaign-polar 16). B. Monard reported
the same activity also on September 25. He also reported that the
the actual counterpart of UW Pic (or at least of the present active
object) is not indicated correctly in the CV atlas, but that it is
the Northern star of the close duo, the brighter one on the
published image (vsnet-campaign-polar 17).
CH UMa (RA = 10h07m00s.90, Dec = +67d32'45".0)
P. Schmeer reported an outburst to 12.2mag on September 29. The
last outburst occurred on 2001 September 7-20 (vsnet-campaign-dn 2868).
(continuous targets)
V4743 Sgr = Nova Sgr 2002 No. 3
(RA = 19h01m09s.38, Dec = -22d00'06".2)
The nova has been given the official permanent designation, V4743
Sgr, in IAUC 7976 (vsnet-campaign-nova 1065). T. Richards performed
tiem-series observations and reported an exactly linear decrease in
brightness of 1.038 mag/day(B) and 0.878 mag/day(V) on September 22
(vsnet-campaign-nova 1066). The object is rapidly fading and now at
about 7.8-7.9mag (vsnet-campaign-nova 1067, 1070, 1071, 1072, 1073,
1074, 1075, 1078, 1081).
4U 1630-47 (RA = 16h34m00s.4, Dec = -47d23'23")
M. Rupen reported a negative observation on September 19 with the
VLA at 8.46 GHz (vsnet-campaign-xray 159). E. Kuulkers reported
that there is a IR counterpart of this object reported by Augusteijn
et al. (vsnet-campaign-xray 160).
HL CMa (RA = 06h45m17s.0, Dec = -16d51'35")
Recent observations indicate a new outburst or a standstill
(vsnet-campaign-dn 2872).
SN 2002fi (RA = 02h33m54s.40, Dec = -21d02'29".4)
The object turned out to be a type Ia SN, as expected by reported
magnitudes. Features resembles that of 20 days after maximum on
Sept. 26 (vsnet-campaign-sn 482).
SN 2002fj (RA = 08h40m45s.10, Dec = -04d07'38".5)
It was revealed to be type IIn SN. Rapid decline would be
consistent with this classification (vsnet-campaign-sn 482).
WR104 (RA = 18h02m04s.0, Dec = -23d37'41")
WR 104 = HadV82 (WR+OB, pinwheel nebula) is now experiencing
another remarkable fading episode. S. Kiyota reported Ic=10.88 on
September 19 and Ic=11.53 on September 24 (vsnet-campaign-wr 4).
SN 2002fk (RA = 03h22m05s.71, Dec = -15d24'03".2)
This supernova is reported to be very bright in 13th mag
(vsnet-campaign-sn 480).
V4742 Sgr (RA = 18h02m21s.864, Dec = -25d20'32".22)
The object is fading and now in 9th mag (vsnet-campaign-nova 1067,
1070, 1075).
V838 Mon (RA = 07h04m04s.816, Dec = -03d50'50".94)
The object was reported to be gradually brightening
(vsnet-campaign-v838mon 384, 285).
FN Sgr (RA = 18h53m54s.79, Dec = -18d59'40".8)
The object still remains at the faint state at about 13.8mag
(vsnet-campaign-symbio 34).
*** Future schedule ***
IAU Colloquium 194
"Compact Binaries in the Galaxy and Beyond"
17-22 November 2003, La Paz, Mexico
Contact Details
Web page: http://bufadora.astrosen.unam.mx/~iau194
Email: iau194@astrosen.unam.mx
[vsnet-campaign-sn 467]
[vsnet-campaign-xray 154]
International Workshop
HIGH RESLUTION X-RAY SPECTROSCOPY with XMM-NEWTON and CHANDRA
24th and 25th October 2002
For more details, visit the workshop website:
http://vsnet.mssl.ucl.ac.uk/~gbr/rgs_workshop/
[vsnet-campaign-xray 152]
Texas in Tuscany
XXI Symposium on Relativistic Astrophysics
Florence, Italy, December 9-13, 2002
For more information:
http://vsnet.arcetri.astro.it/~texaflor/
[vsnet-campaign-xray 142]
NEW X-RAY RESULTS FROM CLUSTERS OF GALAXIES AND BLACK HOLES
34th COSPAR Scientific Assembly
10th to 12th October 2002 - Houston, Texas
For more information, visit the session website:
www.mssl.ucl.ac.uk/www_astro/cospar
[vsnet-campaign-xray 124]
[vsnet-campaign-agn 2]
[vsnet-campaign-xray 133]
SUPERNOVAE (10 YEARS OF SN1993J)
22-26 April 2003, Valencia, Spain
Web site: http://vsnet.uv.es/2003supernovae/
[vsnet-campaign-sn 342]
[vsnet-campaign-sn 452]
34TH COSPAR - GRB AFTERGLOW PHYSICS
HOUSTON, TX, USA, 10-19 OCTOBER 2002
Main Scientific Organizer (MSO):
Elena Pian - INAF, Astronomical Observatory of Trieste, Italy -
pian@ts.astro.it
http://vsnet.ts.astro.it/topics/topix.html
[vsnet-campaign-grb 1]
*** General information ***
V4743 Sgr
Spectrum taken by M. Gavin:
http://home.freeuk.com/m.gavin/nov2002.htm
[vsnet-campaign-nova 1076]
V592 Her
Preprint by T. Kato et al.
http://vsnet.kusastro.kyoto-u.ac.jp/pub/vsnet/preprints/V592_Her/
[vsnet-campaign-dn 2874]
(This summary can be cited.)
Regards,
Makoto Uemura
Return to Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
VSNET Home Page