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[vsnet-campaign 1293] VSNET Weekly Campaign Summary
VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
Possible Nova in the LMC region
(RA = 05h36.8m, Dec = -71d36')
W. Liller discovered a possible nova near LMC. On his photos,
the object was 12.5mag on February 27 and 10.5mag on March 3.
No bright object is seen on February 21. If the object is confirmed
to be a genuine nova in the LMC, the magnitude of 10.5 makes the
object a relatively bright nova in the LMC (vsnet-campaign-nova 852,
vsnet-campaign-news 138). R. Shida confirmed the object and
reported 10.7mag on March 4 (vsnet-campaign-nova 853, 855).
XTE J1650-500 (RA = 16h50m01s.0, Decl. = -49d57'45")
According to IAUC 7837, Tomsick et al. report that this blackhole
candidate X-ray transient is exhibiting large-amplitude variations
with a period of 13.5-14.0 d. They suggest that the period may
correspond to the disk-precession as seen in HZ Her (Her X-1).
This finding may suggest the presence of superhump-type variation
(vsnet-campaign-xray 117).
SN 2002bj (RA = 05h11m46s.37, Dec = -15d08'10".7)
SN 2002bj was discovered on Feb. 28 by Puckett Obs. and the
LOTOSS KAIT at 14.7-8mag. It was not detected on Feb. 21, so it
seems a young object. The position of SN is about 5" east and
6" south of the apparent center of a irregular-shaped galaxy
NGC 1821. The recession velocity of NGC 1821 is 3608 km/s and
there is notable Galactic extinction (A_V \sim 0.3 mag). If this
velocity is of the Hubble flow, the expected maximum for typical
SN Ia is mag about 15.3, which is already overcome by the discovery
mag (vsnet-campaign-sn 361).
SN 2002bf (RA = 10h15m42s.31, Dec = +55d40'06".7)
SN 2002bf was discovered by the LOTOSS team in the image taken
on February 22 (17.0mag) and 24 (16.6mag). The host galaxy =
CGCG 266-031 is a barred-spiral galaxy. The expected maximum for
typical SN Ia is mag about 16.6 (vsnet-campaign-sn 357).
SN 2002bg (RA = 14h59m39s.23, Dec = +13d12'44".5)
This supernova was discovered by the Puckett Observatory team
on February 23 at 16.9mag. The host galaxy = MCG +02-38-31 makes
a pair with MCG +02-38-32 (vsnet-campaign-sn 357).
SN 2002bh (RA = 09h51m06s.56, Dec = +09d00'05".7)
SN 2002bh was discovered by the LOTOSS team in images taken
on February 24 (17.1mag) and 25 (17.2mag). The host of SN 2002bh
is a spiral galaxy UGC 5286. The expected maximum for typical
SN Ia is mag about 16.0 (vsnet-campaign-sn 358).
SN 2002bi (RA = 13h32m54s.45, Dec = +09d31'18".0)
SN 2002bi was discovered by the LOTOSS team in images taken
on February 25 (17.1mag). The host of SN 2002bi is a spiral or
irregular galaxy UGC 8527. The expected maximum for typical
SN Ia is mag about 16.6. SN locates quite near to the nucleus
(vsnet-campaign-sn 358).
Cyg X-1 (RA = 19h58m21s.67, Dec = +35d12'05".7)
S. Golenetskii et al. reported in GCN 1258 that Konus-Wind and
Ulysses observed an exceptional gamma-ray transient on February 24.
They concluded this originated from Cyg X-1, exhibiting an
exceptionally high state. This is the first time that the IPN has
been used to localize a cosmic transient source which is not an SGR
or a GRB (vsnet-campaign-xray 118).
R Lep (RA = 04h59m36s.31, Dec = -14d48'22".8)
The object was reported at a faint minimum at 11.0mag on March
1 (vsnet-campaign-mira 16). S. Otero commented that it is probably
due to a color problem (vsnet-campaign-mira 17, 19).
CQ Tau (RA = 05h35m58s.46, Dec = +24d44'54".4)
The object was reported to be faint (11.3mag) on February 28
(vsnet-campaign-orion 24).
(continuous targets)
CI Cam (RA = 04h19m42s.08, Dec = +55d59'57".8)
The object is still calm at around the slightly bright state
(vsnet-campaign-be 173, 175, vsnet-campaign-xray 119).
SDSSp J173008.38+624754.7 (RA = 17h30m08s.38, Dec = +62d47'54".7)
The Kyoto team reported that the object faded at a rate of ~0.3
mag/day on February 20-22. The combined light curve show a period
of 0.073557(44) d (vsnet-campaign-dn 2143).
IX Dra (RA = 18h12m32s.2, Dec = +67d04'41")
The possible superoutburst is still ongoing. It was reported
to be 15.0mag on February 28 (vsnet-campaign-dn 2145).
kappa CMa (RA = 06h49m50s.45, Dec = -32d30'30".2)
The object is slowly fading. Observations by S. Otero show that
it was 3.70mag on March 2 (vsnet-campaign-be 177).
IM Nor (RA = 15h39m26s.47, Dec = -52d19'18".2)
The fading continues. The object has entered 10th mag
(vsnet-campaign-nova 849).
GK Per (RA = 03h31m12s.50, Dec = +43d54'17".8)
The object gradually brightened (vsnet-campaign-gkper 19, 20,
21, 22, 23, 24, 25, 26, 27), and on March 2, rapider brightening
was reported by several observers (vsnet-campaign-gkper 28, 29,
30). The brightening continued on March 3 and 4, and the object
reached 12.2mag as reported by E. van Ballegoij
(vsnet-campaign-gkper 31).
chi Cyg (RA = 19h50m33s.9, Dec = +32d54'50")
Reported observations indicated that the object has possibly
passed the maximum (vsnet-campaign-mira 14, 15), but the
object still remains at a bright maximum at 4.1-4.2mag
(vsnet-campaign-mira 18).
SN 2002ao (RA = 14h29m35s.74, Dec = -00d00'55".8)
The object is now gradually fading (vsnet-campaign-sn 360).
HL CMa (RA = 06h45m17s.0, Dec = -16d51'35")
The object was reported to finally start fading from the
anomalously long outburst (vsnet-campaign-dn 2144). The fading
rate is, however, rather gradual (vsnet-campaign-dn 2146), and
the object still remained the unusual bright state at around
12mag (vsnet-campaign-dn 2147).
RR Tau (RA = 05h39m30s.53, Dec = +26d22'26".3)
The object again faded to 12.2mag on February 26
(vsnet-campaign-orion 20). It gradually recovered and reached
11.0mag on March 1 (vsnet-campaign-orion 23).
SN 2002ap (RA = 01h36m23s.85, Dec = +15d45'13".0)
The fading rate appears to become more rapid since around
February 27 (vsnet-campaign-sn2002ap 181, 182, 183, 184, 187).
L. Cook reported that the decline rates over the last 2 weeks are
V: 0.076mag/d, R: 0.057mag/d, and I: 0.037mag/d
(vsnet-campaign-sn2002ap 186).
delta Sco (RA = 16h00m19s.9, Dec = -22d37'17")
The object is still very bright (vsnet-campaign-be 174, 176).
V2540 Oph (RA = 17h37m34s.36 Dec = -16d23'18".4)
This nova is now gradually fading with some oscillations
(vsnet-campaign-nova 850, 851). The spectrum taken by M. Fujii
on February 24 shows strong FeII lines, as observed previously
(vsnet-campaign-nova 848).
SN 2002an (RA = 08h22m47s.76, Dec = +24d17'41".7)
The object is now gradually fading (vsnet-campaign-sn 359).
V838 Mon (RA = 07h04m04s.816, Dec = -03d50'50".94)
The object was relatively calm at around 8.4mag and then, again
started gradual fading on February 26-27 (vsnet-campaign-v838mon
224, 225, 227, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238).
The fading almost stopped on March 1-2 (vsnet-campaign-v838mon 239).
The object then started brightening again on March 3
(vsnet-campaign-v838mon 240, 241, 242, 243, 244, 245, 246, 247).
Y. Efimov, Crimean astrophysical observatory, performed polarimetry
and photometry on February 11-18. Y. Efimov calculated the weighted
average of wavelength dependence of polarization Pobs(%) which is very
well fit by the curve of interstellar polarization Pfit(%) applying the
Serkowski' low with Pmax = 2.512 +-0.037 (%) at Lambda(max) = 0.554+/-
0.002mcm (vsnet-campaign-v838mon 226).
MisV1147 (RA = 22h54m03s.78, Dec = +58d54'02".1)
The slow fading is still continues (vsnet-campaign-unknown 66).
V854 Cen (RA = 14h34m49s.8, Dec = -39d33'18")
The object is still brightening and reached about 8mag
(vsnet-campaign-rcb 16).
U Gem (RA = 07h55m05s.55, Dec = +22d00'09".2)
The object faded from the last outburst (vsnet-campaign-ugem 21).
UX Ori (RA = 05h04m30s.39, Dec = -03d47'18".3)
The object is very faint at 11th mag (vsnet-campaign-orion 21).
V1413 Aql (RA = 19h03m46s.84, Dec = +16d26'17".1)
Reported observations show that the object already passed the
eclipse (vsnet-campaign-symbio 10).
*** Future schedule ***
Lectures on Supernovae at Cornell
Stanford E. Woosley, expert on giant stellar explosions,
to give three talks at Cornell
contact to: David Brand deb27@cornell.edu
[vsnet-campaign-sn 353]
SUPERNOVAE (10 YEARS OF SN1993J)
22-26 April 2003, Valencia, Spain
Web site: http://vsnet.uv.es/2003supernovae/
[vsnet-campaign-sn 342]
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]
MASS-LOSING PULSATING STARS AND THEIR CIRCUMSTELLAR MATTER
Sendai, Japan: May 13-16, 2002
contact to: Dr. M. Seki or wsloc@astr.tohoku.ac.jp
http://vsnet.astr.tohoku.ac.jp/ws2002/
[vsnet-campaign-mira 3]
International Conference on Classical Nova Explosions
Sitges (Barcelona), Spain: 20-24 May 2002
For more detailed information, see http://vsnet.ieec.fcr.es/novaconf
[vsnet-campaign-nova 643]
[vsnet-campaign-nova 666]
Blazar meeting at Tuorla: June 17-21, 2002
for more information, see http://vsnet.astro.utu.fi/blazar02
[vsnet-campaign-blazar 232]
International workshop
"XEUS - studying the evolution of the hot universe"
March 11-13, 2002 ; MPE Garching, Germany
for more information, see
http://wave.xray.mpe.mpg.de/conferences/xeus-workshop
[vsnet-campaign-xray 98]
[vsnet-campaign-xray 104]
*** General information ***
possible Nova in the LMC region
Information for comparison stars reported by B. Skiff,
see [vsnet-campaign-nova 854]
Sequence provided by M. Morel, see [vsnet-campaign-nova 856]
V2540 Oph
Spectrum taken by M. Fujii:
http://vsnet1.harenet.ne.jp/~aikow/v2540_oph_0224.gif
[vsnet-campaign-nova 848]
V838 Mon
Moderate resolution spectrum by C. Buil:
http://vsnet.astrosurf.com/buil/us/nmon/nmon.htm
[vsnet-campaign-v838mon 228]
SN 2002ap
Light curve provided by L. Cook:
http://vsnet.geocities.com/lcoo/sn2002ap.gif
[vsnet-campaign-sn2002ap 186]
GK Per
Predicted inferior conjunction times, see [vsnet-campaign-gkper 32]
Corrigendum:
In the last campaign summary:
> TV Col (RA = 05h29m25s.5, Dec = -32d49'05".2)
>
> A fading of this object was reported (vsnet-campaign-ip 85,
> vsnet-campaign-nl 66), but it turned out to be an error observation
^^^^^^^^^^^^^^^^^
error reporting
Sorry for your confusion.
(This summary can be cited.)
Regards,
Makoto Uemura
vsnet-adm@kusastro.kyoto-u.ac.jp
Return to Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
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