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[vsnet-campaign 1299] VSNET Weekly Campaign Summary
VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
XTE J1908+094 (RA = 19h08m50s, Dec = +09d22'.5)
According to IAUC 7856, Woods et al. reported a new X-ray
transient on Feb. 21. The analysis of the X-ray properties
suggests that the object is a new blackhole candidate
(vsnet-campaign-xray 126). To search its optical and infrared
counterpart is encouraged.
QW Ser (RA = 15h26m13s.99, Dec = +08d18'03".8)
As reported by R. Stubbings on March 21, the SU UMa-type dwarf
nova QW Ser experienced an outburst. The reported magnitude
(13.1mag) is slightly fainter than those of past superoutburst
maxima (vsnet-campaign-dn 2196). The object faded rapidly, which
indicates the outburst was a normal one (vsnet-campaign-dn 2201,
2206).
MKN 421 (RA = 11h04m27s, Dec = +38d12'32")
As reported by M. Simonsen on March 23, the object experienced
an outburst of 12.5mag (vsnet-campaign-blazar 255).
IR Gem (RA = 06h47m34s.58, Dec = +28d06'22".7)
The object was reported to be in a possible superoutburst
reaching 11.6mag on March 20 (vsnet-campaign-dn 2198).
U Mon (RA = 07h30m47s.45, Dec = -09d46'36".9)
This RV Tau-type star was in an interchanged primary minimum
(~7mag) on March 16 (vsnet-campaign-rvtau 1). On interchanged
minima I and II in RV Tau stars, T. Kato commented that R Sct
frequently shows consecutive minima II (vsnet-campaign-rvtau 2).
T. Ishida commented that deterministic system with unpredictable
behavior (so-called "Chaos") is one of the possible cause of such
an irregularity (vsnet-campaign-rvtau 3).
KS UMa (RA = 10h20m26s.54, Dec = +53d04'33".5)
An outburst of 14.4mag was detected on March 13 by P. A.
Dubovsky and G. Poyner. It seems to be a normal outburst
(vsnet-campaign-dn 2186).
V818 Sco (RA = 16h19m55s.07, Dec = -15d38'24".5)
The object is now bright. B. Monard reported 12.0mag on
March 18 (vsnet-campaign-xray 125).
AM Cas (RA = 02h26m23s.40, Dec = +71d18'32".3)
The object experienced an outburst and reached 13.8mag on
March 17. This star shows rather irregular variations during
the past few months (vsnet-campaign-dn 2190).
DY Per (RA = 02h35m17s.12, Dec = +56d08'44".7)
The object further faded to 12th mag (vsnet-campaign-rcb 20, 21).
NY Ser (RA = 15h13m02s.39, Dec = +23d15'07".1)
NY Ser, a long period SU UMa star, experienced an outburst
which was reported by M. Simonsen on March 22 at 14.6mag
(vsnet-campaign-dn 2202). The object was reported to remain the
same magnitude on March 23 (vsnet-campaign-dn 2205).
CI UMa (RA = 10h18m13s.01, Dec = +71d55'42".8)
As reported by M. Simonsen on March 23, the SU UMa-type dwarf
nova CI UMa is in outburst. The last superoutburst was in 2001
November (vsnet-campaign-dn 2203). The outburst is now ongoing
and it is now about 13.8-13.9mag (vsnet-campaign-dn 2209).
(continuous targets)
OJ287 (RA = 08h51m57s, Dec = 20d17'59")
The object is now brightening and has reached 14.5mag
(vsnet-campaign-blazar 256).
GZ Cnc (RA = 09h15m51s.70, Dec = +09d00'50".2)
The object faded from the last normal outburst
(vsnet-campaign-dn 2191).
CR Boo (RA = 13h48m55s.42, Dec = +07d57'30".3)
The last outburst faded around March 13 (vsnet-campaign-dn 2188).
A new outburst, reported by M. Simonsen on March 22, still
continues (vsnet-campaign-dn 2207).
1RXP J113123+4322.5 (RA = 11h31m22s.426, Dec = +43d22'38".51)
The object entered a rapid fading on March 15-16. M. Uemura
reported that the average superhump period during the plateau
phase is 0.065069(4)d. The rapid fading stopped when the object
became ~2mag fainter and still above the quiescent level.
During March 16-17, the object gradually faded at a rate of
0.1mag/d. In conjunction with the short period and the period
increase of superhumps, this phenomenon is similar to large-
amplitude SU UMa-type dwarf novae (vsnet-campaign-dn 2192).
During the post-outburst phase, the Kyoto team detected humps
with two peaks: one was probably associated with ordinary
superhumps (amplitude ~0.1mag), and the other was late superhumps
(~0.5mag) (vsnet-campaign-dn 2193). Their period was 0.06448(5) d,
shorter than that observed during the superoutburst
(vsnet-campaign-dn 2195). The gradual fading is still ongoing
(vsnet-campaign-dn 2211, 2212).
SN 2002bo (RA = 10h18m06s.51, Dec = +21d49'41".7)
The brightening continues. It has reached 13.9mag
(vsnet-campaign-sn 382, 383, 384, 385).
Nova LMC 2002
(RA = 05h36m46s.4, Dec = -71d35'35".34)
The object is fading now (vsnet-campaign-nova 885, 889).
AX Per (RA = 01h36m22s.72, Dec = +54d15'02".7)
The object is now in an eclipse (vsnet-campaign-symbio 12).
GK Per (RA = 03h31m12s.50, Dec = +43d54'17".8)
The object is still in rising, and some observations show
that it has entered 10th mag (vsnet-campaign-gkper 59, 61, 63,
64, 65, 66, 67, 68). The observations by the Kyoto team revealed
that the object brightened at a rate of 0.05mag/d since March 16
while it was relatively calm before March 15. The long-term
(P~0.0525d) and short-term (0.005-0.007d) modulations have
continuously appeared (vsnet-campaign-gkper 60, 62, 69).
SN 2002ap (RA = 01h36m23s.85, Dec = +15d45'13".0)
The object is gradually fading (vsnet-campaign-sn 197, 198, 199).
V803 Cen (RA = 13h23m44s.5, Dec = -41d44'30".1)
The object was faint until March 21 when R. Stubbings detected
a bright outburst to 12.6mag (vsnet-campaign-dn 2187, 2197).
The outburst continues (vsnet-campaign-dn 2200, 2204, 2208).
V2540 Oph (RA = 17h37m34s.36 Dec = -16d23'18".4)
The object stated fading after the strong oscillation
(vsnet-campaign-nova 887, 888).
V838 Mon (RA = 07h04m04s.816, Dec = -03d50'50".94)
The slow fading continues (vsnet-campaign-v838mon 292, 293,
294, 295, 296, 297, 298, 299). The fading rate appears to become
more gradual since March 21-22 (vsnet-campaign-v838mon 301, 302,
303, 304). The object is now at about 8mag and the fading almost
stopped (vsnet-campaignv838mon 305).
V4740 Sgr (RA = 18h11m45s.82, Dec = -30d30'49".9)
D. West reported revised photometry using Tycho-2 catalogue
and showed V-Ic <= 0, indicating very blue for a nova
(vsnet-campaign-nova 883).
chi Cyg (RA = 19h50m33s.9, Dec = +32d54'50")
The object is now fading from the bright maximum
(vsnet-campaign-mira 22).
delta Sco (RA = 16h00m19s.9, Dec = -22d37'17")
The bright state continues (vsnet-campaign-be 178).
IM Nor (RA = 15h39m26s.47, Dec = -52d19'18".2)
The fading rate appears to become more gradual
(vsnet-campaign-nova 886).
AT Cnc (RA = 08h28m36s.92, Dec = +25d20'02".6)
The object faded from the outburst and then entered a standstill
(vsnet-campaign-dn 2189).
V1039 Cen (RA = 13h55m41s.27, De = -64d15'57".9)
Using on recent observations, A. Retter detected two possible
periodicity: ~1.8 hr, which is presumably the orbital period, and
~20 min, which is probably the spin period. He suggested that
this nova is an intermediate polar (vsnet-campaign-nova 884).
The strong oscillation still continues (vsnet-campaign-nova 890).
RR Tau (RA = 05h39m30s.53, Dec = +26d22'26".3)
The object is gradually brightening and has been reported to
reach 10.6mag on March 24 (vsnet-campaign-orion 30).
HL CMa (RA = 06h45m17s.0, Dec = -16d51'35")
Recent observations indicate HL CMa entered a new starndstill
(vsnet-campaign-dn 2194, 2199), and then, again faded
(vsnet-campaign-dn 2210).
*** Future schedule ***
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]
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]
*** General information ***
GK Per
Time-series photometry by T. Havlik, see [vsnet-campaign-data 93]
V838 Mon
Spectra since February 2002:
http://perso.wanadoo.fr/sdmorata/V838/V838Mon.html
[vsnet-campaign-v838mon 300]
(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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