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[vsnet-campaign 1303] VSNET Weekly Campaign Summary
VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
Nova Sgr 2002 (RA = 17h59m59s.38, Dec = -30d53'21".9)
On April 15, W. Liller reported his discovery of a possible
nova of 9.2mag. The object is not seen on images taken before
April 13 (vsnet-campaign-nova 902, 903, 910, 911, 916, 918, 920).
P. Cacella confirmed this object at V=10.1 (vsnet-campaign-nova 904,
905). H. Yamaoka reported the nearest star is a USNO star of
r=16.9, which is a candidate of the progenitor of this nova
(vsnet-campaign-nova 908). M. Fujii performed spectroscopy on
April 18. The spectrum revealed that it is an Fe II-class nova
(vsnet-campaign-nova 922). The object is now fading.
(vsnet-campaign-nova 909, 912, 913, 907, 917, 919, 921, 923, 925, 927).
XTE J1901+014 (RA = 19h01m36s, Dec = +01d26'.4)
R. Remillard reported the discovery of a new fast X-ray
transient, XTE J1901+014 on April 17. The object, detected
with RXTE/ASM, was originally thought to be a gamma-ray
burst (GRB020406). The event began on 2002 April 6.76, lasting
more than 2 min and less than 3.15 hr, with a peak flux of 0.9 Crab.
Archival ASM data show a previous outburst at the same position on
1997 June 21, which was longer than 6 min and less than 8 hr,
with a peak flux of 0.4 Crab. The time scale for these eruptions
are reminiscent of the microquasar and black hole binary V4641 Sgr
(vsnet-campaign-xray 135).
CC Cnc (RA = 08h36m19s.17, Dec = +21d21'05".4)
G. Poyner reported that CC Cnc was 14.4mag on April 16, which
indicated that a new outburst of this SU UMa-type star started.
On April 17, R. Stubbings confirmed the object brightened to
13.8mag. The last superoutburst occurred in 2001 November
(vsnet-campaign-dn 2315).
OQ Car (RA = 09h55m58s.70, Dec = -68d09'41".7)
OQ Car, a recently recognized CV, experienced an outburst
(14.0mag) on April 18 as reported by R. Stubbings
(vsnet-campaign-dn 2320).
SN 2002ch
The host galaxy of SN 2002ch is KUG 1111+340, a small spiral
galaxy probably with a large distance. The UCB team reported that
it is of type II. The recession velocity of host galaxy is
reported as about 10200 km/s (vsnet-campaign-sn 415).
(continuous targets)
DV UMa (RA = 09h46m36s.67, Dec = +44d46'45".1)
The Kyoto team performed time-series photometry and reported
that superhumps decreased in amplitude. The profile of eclipses
was asymmetric, indicating an eccentric disk (vsnet-campaign-dn 2316).
A. Oksanen also performed time-series observations and reported
asymmetric eclipses which had a steep ingress and slower egress
(vsnet-campaign-dn 2330). The superoutburst is still ongoing
(vsnet-campaign-dn 2312, 2323).
V Sge (RA = 20h20m14s.75, Dec = +21d06'09".0)
V Sge was reported to be in a faint state on April 5
(vsnet-campaign-nl 79).
FG Sge (RA = 20h11m56s.14, Dec = +20d20'03".6)
Recent observations imply a possible brightening of FG Sge
(vsnet-campaign-rcb 23).
MV Lyr (RA = 19h07m15s.93, Dec = +44d01'10".7)
The object remains at the faint state (vsnet-campaign-nl 77).
V803 Cen (RA = 13h23m44s.5, Dec = -41d44'30".1)
The object started fading on April 18 (vsnet-campaign-dn 2325).
V854 Cen (RA = 14h34m49s.8, Dec = -39d33'18")
The object is approaching maximum (7.2mag on April 18)
(vsnet-campaign-rcb 24).
delta Sco (RA = 16h00m19s.9, Dec = -22d37'17")
S. Otero reported V=1.67 on April 19, which is brighter than
ever before in its long outburst (vsnet-campaign-be 181, 182).
FS Aur (RA = 05h47m48s.34, Dec = +28d35'11".1)
An outburst to 14.4mag was reported on April 16 by M. Simonsen
(vsnet-campaign-dn 2310).
V893 Sco (RA = 16h14m45s.26, Dec = -28d39'30".3)
The object is still slightly above mininum (vsnet-campaign-dn 2308).
V2051 Oph (RA = 17h08m19.1s, Dec = -25d48m31.1s)
According to P. Nelson and R. Stubbings, the eclipsing SU UMa-type
dwarf nova V2051 Oph is undergoing a bright superoutburst.
The object was observed at 12.2 mag on April 18. The last likely
superoutburst was observed in 2000 November (vsnet-campaign-dn 2317,
2319, vsnet-campaign-v2051oph 1). The superoutburst is still
ongoing (vsnet-campaign-v2051oph 2).
SN 2002cf (RA = 12h54m31s.30, Dec = -06d51'24".8)
The CfA team took a spectrum on Apr. 15.29, which revealed
that it is of probably subluminous type Ia some 3 days before
maximum (vsnet-campaign-sn 412).
SN 2002cg (RA = 16h29m00s.48, Dec = +41d17'00".4)
The CfA team reported that it is of type I, but the exact
classification is uncertain. They remark that the spectrum is
resembles that of "hypernova" SN 2002ap about a month after
discovery. The UCB team reported that it seems to be normal
SN Ic (vsnet-campaign-sn 415).
RX J1155.4-5641 (RA = 11h55m27s.0, Dec = -56d41'53")
The superoutburst finished (vsnet-campaign-dn 2309, 2328),
and a normal outburst was reported on April 21 by B. Monard
(13.0mag)(vsnet-campaign-dn 2331).
V504 Cen (RA = 14h12m49s.36, Dec = -40d21'02".2)
V504 Cen remains in the faint state (vsnet-campaign-nl 78).
CR Boo (RA = 13h48m55s.42, Dec = +07d57'30".3)
The object has recently been in a relatively faint state
(vsnet-campaign-dn 2329).
KS UMa (RA = 10h20m26s.54, Dec = +53d04'33".5)
The object has faded from the last superoutburst
(vsnet-campaign-dn 2313, 2321).
GZ Cnc (RA = 09h15m51s.70, Dec = +09d00'50".2)
The object is fading from the last outburst
(vsnet-campaign-dn 2311, 2322).
GK Per (RA = 03h31m12s.50, Dec = +43d54'17".8)
The object is fading (vsnet-campaign-gkper 85). The fading
became rapider since April 17. The long-term and spin modulations
are still evident (vsnet-campaign-gkper 86).
V2540 Oph (RA = 17h37m34s.36 Dec = -16d23'18".4)
A fading from the oscillation peak was observed around
April 15-18 (vsnet-campaign-nova 926).
IY UMa (RA = 10h43m56s.87, Dec = +58d07'32".5)
A. Oksanen reported that the object was brighter (17.5mag) on
April 21 than usual (vsnet-campaign-dn 2314, 2326).
IM Nor (RA = 15h39m26s.47, Dec = -52d19'18".2)
The fading continues (vsnet-campaign-nova 924).
V838 Mon (RA = 07h04m04s.816, Dec = -03d50'50".94)
The object is still in the fading phase (vsnet-campaign-v838mon
340, 341, 342, 343, 344).
RR Tau (RA = 05h39m30s.53, Dec = +26d22'26".3)
The fading still continues (vsnet-campaign-orion 32, 33).
RS Oph (RA = 17h50m13s.56, Dec = -06d42'30".6)
The object is now slightly fainter than usual. It was
reported 11.8-11.9mag on April 17-18 (vsnet-campaign-symbio 13).
*** 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]
[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]
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 ***
Nova
Images taken by P. Cacella:
http://intermega.globo.com/cacella/NovaSGR.htm
[vsnet-campaign-nova 906]
Sequence presented by M. Morel, see [vsnet-campaign-nova 914]
Spectrum taken by M. Fujii:
http://vsnet1.harenet.ne.jp/~aikow/p_nova_sgr_0418.gif
[vsnet-campaign-nova 922]
New web site about SNe:
http://vsnet.astrosurf.com/snweb/
(replaced from the old version of http://vsnet.astrosurf.com/snaude/)
[vsnet-campaign-sn 411]
V2540 Oph
Image taken by K. Haseda:
http://vsnet.tees.ne.jp/~khaseda/V2540Oph200204122814.jpg
[vsnet-campaign-nova 915]
V2051 Oph
Eclipse ephemeris, see [vsnet-campaign-dn 2318]
delta Sco
Light curve provided by S. Otero:
http://ar.geocities.com/varsao/Curva_delta_Sco.htm
[vsnet-campaign-be 181]
DV UMa
Eclipse ephemeris, see [vsnet-campaign-dn 2324]
IY UMa
Eclipse ephemeris, see [vsnet-campaign-dn 2327]
(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
VSNET Home Page