Return to Home Page
VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
SN 2003da (RA = 09h23m47s.56, Dec = +42d10'48".6)
SN 2003da is hosted by UGC 4992, an edge-on spiral galaxy. The
expected maximum for typical SN Ia is mag about 15.4
(vsnet-campaign-sn 598). The UCB team revealed that it is type
II SN soon after explosion (vsnet-campaign-sn 601, 604)
SN 2003db (RA = 09h36m58s.83, Dec = +31d20'01".7)
SN 2003db is hosted by MCG +05-23-21, a small spiral galaxy. The
expected maximum for typical SN Ia is mag about 16.9
(vsnet-campaign-sn 598). It is type II, a few weeks after explosion
(vsnet-campaign-sn 601).
IGR J16358-4726 (RA =16h35m53s, Dec = -47d25'.3)
According to IAUC 8109, Kouveliotou et al. reported the detection
of a periodicity of 5850+/-50 s in the X-ray transient IGR
J16358-4726. If this period is an underlying orbital period of the
binary, the period is rather exceptionally short. If this is the
case, a search for infrared counterpart (and possibly associated
variability) would provide crucial information, since only a few
X-ray binaries with comparable periods have been known. This period
may be alternatively associated with QPOs, or a spin period
(vsnet-campaign-xray 220).
SLX 1746-331 (RA = 17h49m50s.6, Dec = -33d11'55")
According to ATEL #143, Markwardt reports the detection of a new
outburst of SLX 1746-331. The object is proposed to be identified
with the ROSAT source RX J1749.8-3312 = 1RXS J174948.4-331215. The
source is reported to be rising (210 mCrab on Apr. 8.65, 2-10 keV,
RXTE/PCA observation) (vsnet-campaign-xray 221). B. Monard reported
that no object brighter than 17.5CR mag was detected on April 12 at
the position of this X-ray transient (vsnet-campaign-xray 224).
CI UMa (RA = 10h18m13s.01, Dec = +71d55'42".8)
A bright outburst of 14.0mag was reported on April 8 by G. Poyner
(vsnet-campaign-dn 3577). K. Tanabe et al. reported the detection
of superhumps, which showed the current outburst is a superoutburst
(vsnet-campaign-dn 3581). The time-series observation by A. Oksanen
and P. Tikkanen also showed 0.2 mag sharp superhumps
(vsnet-campaign-dn 3582, 3587).
VW CrB (RA = 16h00m03s.76, Dec = +33d11'14".4)
An outburst of 14.4mag was reported on April 9 by G. Poyner
(vsnet-campaign-dn 3578).
Possible Nova in Sgr (RA = 18h07m20s38, Dec = -27d24'31".6)
IAUC No. 8113 reported the discovery of a possible nova in Sgr.
The position, however, almost perfectly coincides with a bright
2MASS star, indicating that the object is less likely a nova. There
is also a GCVS mira star V4006 Sgr near the possible nova
(vsnet-campaign-nova 1186, 1187, 1191). The color of the possible
nova was reported to be rather red, atypical for a nova
(vsnet-campaign-nova 1188, 1189, 1190). The prediscovery
variability of this possible nova is recorded in DSS R and POSS I
images, and reported by K. Kanatsu, K. Haseda, T. Scarmato,
K. Kadota, G. Sostero and S. Garzia (vsnet-campaign-nova 1192, 1193,
1194, 1195, 1196, 1197, 1198, 1199, 1200, 1201, 1202, 1203, 1204).
The possible nova turned out to be a mira, V4006 Sgr
(vsnet-campaign-nova 1205, 1206, 1207, 1208, 1209, 1210).
alpha Ori (RA = 05h55m10s.3, Dec = +07d24'25")
alpha Ori has been reported to be slightly fainter recently
(vsnet-campaign-mira 55).
SN 2003dc (RA = 13h54m21s.70, Dec = +05d46'09".3)
SN 2003dc is hosted by a very dim (R ~ 20) galaxy, which appears
almost as a point source on DSS image (vsnet-campaign-sn 601).
SN 2003dd (RA = 13h56m55s.04, Dec = +03d55'58".2)
SN 2003dd is hosted by 2MASX J13565408+0356058, also a dim galaxy
(vsnet-campaign-sn 601).
SN 2003de (RA = 10h10m41s.25, Dec = +35d44'52".9)
SN 2003de is hosted by 2MASXi J1010413+354448, an apparent spiral
dim galaxy (vsnet-campaign-sn 601).
SN 2003df (RA = 12h07m31s.36, Dec = +26d57'36".2)
SN 2003df is dim (mag > 20) one discovered from NEAT images. The
host galaxy is 2MASX J12073149+2657279 (mag about 18)
(vsnet-campaign-sn 602).
SN 2003dg (RA = 11h57m31s.97, Dec = -01d15'13".6)
SN 2003dg is hosted by UGC 6934, an edge-on spiral galaxy. The
expected maximum for typical SN Ia is mag about 16.1
(vsnet-campaign-sn 602).
SN 2003di (RA = 12h00m24s.08, Dec = +11d58'26".5)
SN 2003di is hosted by a small galaxy near MCG +02-31-010 = CGCG
069-017. If the host galaxy is at the same distance as MCG
+02-31-010, the maximum magnitude is consistent with the expected
maximum for SN Ia (vsnet-campaign-sn 602).
SN 2003dj (RA = 13h16m22s.04, Dec = +19d25'53".4)
SN 2003dj is hosted by MAPS-NGP O_438_0282902, a dim (mag about
19) galaxy (vsnet-campaign-sn 603).
SN 2003dk (RA = 13h15m31s.65, Dec = -07d20'55".8)
SN 2003dk is hosted by APMUKS(BJ) B131255.32-070502.6, also a dim
(mag about 19) galaxy (vsnet-campaign-sn 603).
SN 2003dl (RA = 14h56m36s.25, Dec = +30d14'21".5)
SN 2003dl is hosted by NGC 5789, a neighbour disturbed knotty
galaxy. The expected maximum for typical SN Ia is mag about 13.6,
so this SN is very subluminous (M_V around -14) or highly reddened
within the host galaxy (vsnet-campaign-sn 603).
V877 Ara (RA = 17h16m58s.80, Dec = -65d32'58".6)
An outburst of 14.1mag was reported on April 13 by R. Stubbings.
It is very likely a superoutburst (vsnet-campaign-dn 3585).
XTE J1807-294 (RA = 18h06m59s.80, Dec = -29d24'30")
B. Monard reported that no object brighter than 17CR mag was
detected on April 12 at the position of this presently active
millisecond pulsar (vsnet-campaign-xray 223).
(continuous targets)
GZ Cnc (RA = 09h15m51s.70, Dec = +09d00'50".2)
A new outburst started on April 9 (vsnet-campaign-dn 3580).
SN 2003cr (RA = 14h58m35s.53, Dec = +44d53'06".4)
The UCB team took spectra of SNe on Apr. 8, which showed that SN
2003cr was probably SN Ic within a few weeks past maximum
(vsnet-campaign-sn 601).
SN 2003cv (RA = 11h17m48s.36, Dec = +19d09'08".5)
The Las Campanas spectrum taken on Apr 6.15 revealed that it is a
peculiar (high expansion velocity) SN II. It resembles the
Hydrogen-rich 'hypernova' SN 2003bg, and SN 2003cv is at least one
month after explosion (vsnet-campaign-sn 600).
AG Hya (RA = 09h50m30s.94, Dec = -23d45'03".7)
Nakajima-san reported a 2.8-hour run of the outbursting AG Hya.
There was no clear indication of superhumps. However, there was a
sudden brightness jump (about 1 mag) lasting for about 7 minutes.
The light curve was rather unusual; the nature of this brightening
is unclear (vsnet-campaign-dn 3579).
GRB030329 (RA = 10h44m50s.030, Dec = +21d31'18".15)
The SN component which has been emerged from the afterglow of GRB
030329 is assigned as SN 2003dh. The brightness of SN component
itself is estimated as below mag 20, besides the afterglow
persists at mag 19 (vsnet-campaign-sn 602, vsnet-campaign-grb 28).
AK Cnc (RA = 08h55m21s.21, Dec = +11d18'14".7)
Using the data by J. Pietz, the Nyrola Observatory team, K. Torii,
K. Tanabe, and the Kyoto team, T. Kato reported a mean superhump
period of 0.06736 d, which is slightly shorter than the literature
value. The period change is almost zero, but has a slight
indication of a positive period derivative (vsnet-campaign-dn 3583).
IGR J17464-3213 (RA = 17h46m15s.61, Dec= -32d13'59".9)
D. Baba et al. reported the detection of a possible infrared
counterpart of this X-ray transient. Two distinct infrared sources
exist within 2" of the radio counterpart; the NE one is not visible
on public 2MASS images. The Ks-magnitude of the object was 13.9 on
April 5 and 13.6 on April 6 (vsnet-campaign-xray 219).
SN 2003cg (RA = 10h14m15s.97, Dec = +03d28'02".5)
The object is reported to be still 14th mag (vsnet-campaign-sn 599).
BR Lup (RA = 15h35m51s.61, Dec = -40d34'25".4)
Combined with a new light curve obtained by G. Bolt and B. Monard,
T. Kato reported a superhump period of 0.08220(2) d. Secondary
maxima of superhumps appeared in the observations on April 11
(vsnet-campaign-dn 3576, 3584). The superoutburst is still ongoing
(vsnet-campaign-dn 3586).
V4641 Sgr (RA = 18h19m21s.6, Dec = -25d24'25")
The object is reported to be calm (vsnet-campaign-v4641sgr 167,
168, 169, 170, 171).
*** Future schedule ***
"X-ray and Radio Emission of Young Stars"
July 28 - 29, 2003, Rikkyo University, Tokyo, Japan
for more information , please contact to kitamoto@rikkyo.ne.jp
[vsnet-campaign-xray 218]
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]
[vsnet-campaign-xray 172]
Light curve provided by S. Otero:
http://ar.geocities.com/varsao/Curva_Eta_Carinae.htm
[vsnet-campaign-sdor 22]
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]
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]
[vsnet-campaign-sn 512]
*** General information ***
BR Lup
VSNET page:
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/brlup.html
[vsnet-campaign-dn 3375]
Otero's Mira light curves:
http://ar.geocities.com/varsao/Curva_R_Car.htm
http://ar.geocities.com/varsao/Curva_S_Car.htm
http://ar.geocities.com/varsao/Curva_R_Hya.htm
http://ar.geocities.com/varsao/Curva_R_Cen.htm
http://ar.geocities.com/varsao/curva_BH_Cru.htm
also see,
http://ar.geocities.com/varsao/Curva_Eta_Carinae.htm
http://ar.geocities.com/varsao/Curva_The_Aps.htm
[vsnet-campaign-mira 54]
GRB030329
CCD images and light curve by O. Trondal:
http://vsnet.geocities.com/Odd_Trondal/grb030329.htm
[vsnet-campaign-grb 29]
(This summary can be cited.)
Regards,
Makoto Uemura
Return to the Powerful Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
