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*** News from VSNET ***
V4641 Sgr now seems to be calm.
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 August 18, 2003, as VSNET campaign
circulation 1408
[Note a large part of detailed information is posted to vsnet-campaign
sub-lists].
VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
SN 2003hc (RA = 02h31m42s.04, Dec = +39d22'05".5)
SN 2003hc is hosted by UGC 1993, a spiral galaxy. This galaxy has
produced SN Ia 1999gp (maximum V magnitude was about 16.1) and SN
1973P (discovery photographic magnitude about 18.0)
(vsnet-campaign-sn 670).
SN 2003hd (RA = 01h49m46s.31, Dec = -21d54'37".8)
SN 2003hd is hosted by MCG -04-5-10, a spiral galaxy. The
discovery magnitude (17.4-17.3mag) is consistent with the expected
maximum for typical SN Ia (vsnet-campaign-sn 670). The Carnegie
Observatories team revealed that it was a young SN II with the Las
Campanas Clay telescope spectrum taken on Aug. 15.28. It seems
somewhat luminous event (vsnet-campaign-sn 672).
IGR J16479-4514 (RA = 16h47m.9, Dec = -45d14')
According to ATEL #176, Molkov et al. reports the discovery of a
new X-ray transient IGR J16479-4514 (vsnet-campaign-xray 256).
SN 2003he (RA = 23h58m57s.05, Dec = -02d14'53".1)
SN 2003he is hosted by MCG -01-1-10, a barred-spiral galaxy. The
expected maximum for typical SN Ia is mag about 16.8
(vsnet-campaign-sn 671).
SN 2003hf (RA = 16h50m48s.38, Dec = +45d24'01".8)
SN 2003hf is hosted by UGC 10586, a face-on spiral galaxy. The
expected maximum for typical SN Ia is mag about 17.2
(vsnet-campaign-sn 671).
(continuous targets)
V4641 Sgr (RA = 18h19m21s.6, Dec = -25d24'25")
N. V. Primak, et al., the Crimean Astrophysical Observatory team,
reported they also detected oscillations of the optical flux on
August 5 (vsnet-campaign-v4641sgr 210). M. Rupen reported that
radio observations gave no detection on August 12 and 14
(vsnet-campaign-v4641sgr 209, vsnet-campaign-xray 257). No activity
was reported to the VSNET during the last week
(vsnet-campaign-v4641sgr 211, 212, 213, 214, 215,
vsnet-campaign-xray 259).
AM Her (RA = 18h16m13s.4, Dec = +49d52'03".1)
Several observations have shown that AM Her may be fading (mag
about 13.5-14.0). This may be a beginning of a new low state
(vsnet-campaign-polar 25).
Z UMi (RA = 15h02m01s.35, Dec = +83d03'48".7)
The slow fading of Z UMi continues. The object is currently
report at around 12.0 mag (vsnet-campaign-rcb 148).
*** Future schedule ***
X-RAY AND RADIO CONNECTIONS
Santa Fe, New Mexico, USA
3 - 6 February 2004
http://vsnet.aoc.nrao.edu/events/xraydio/
[vsnet-campaign-xray 258]
International Conference "Interacting Binary Stars-2003"
Odessa, Ukraine, August 18-22, 2003
http://oap16.pochta.ru
Contact address: Prof. Ivan L.Andronov, oap16@pochta.ru
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]
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://vsnet.inaoep.mx/~agn2003/
[vsnet-campaign-agn 4]
IM Nor Campaign
by I. Hachisu (University of Tokyo) and the VSNET team
For more information, see [vsnet-campaign-nova 1241]
GRB Mini-Symposium in JENAM2003
For more information, http://vsnet.konkoly.hu/jenam03/
[vsnet-campaign-grb 31]
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@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]
The 2003 Gamma Ray Burst conference
Hosted by Los Alamos,
in Santa Fe, New Mexico (USA), between September 8 and 12, 2003
http://grb2003.lanl.gov/
[vsnet-campaign-grb 13]
*** General information ***
(This summary can be cited.)
Regards,
Makoto Uemura
Return to the Powerful Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
