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[vsnet-campaign 1301] VSNET Weekly Campaign Summary
VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
RX Cha (RA = 10h36m26s.33, Dec = -80d02'48".2)
As reported by R. Stubbings on April 1, the SU UMa-type dwarf
nova RX Cha is undergoing a bright outburst (14.4mag). The last
likely superoutburst occurred in 2001 March (vsnet-campaign-dn 2225).
The object has faded, and then remained at 15.1mag on April 4 and 5
(vsnet-campaign-dn 2253, 2263). The superoutburst still continues
(vsnet-campaign-dn 2277).
PU CMa (RA = 06h40m47s.67, Dec = -24d23'14".6)
As reported by R. Stubbings on April 1, the possible
SU UMa-type dwarf nova PU CMa experienced an outburst (12.0mag)
(vsnet-campaign-dn 2226). The fading from the outburst was
reported on April 3 (vsnet-campaign-dn 2240, 2252).
RX J1155.4-5641 (RA = 11h55m27s.0, Dec = -56d41'53")
B. Monard reported an outburst at 12.2mag on March 30 and
it further brightened to 10.9mag on April 1 (vsnet-campaign-dn 2231).
The last apparent superoutburst was observed in 2001 January
(vsnet-campaign-dn 2233, 2234). Observations by B. Monard
indicate that the outburst started between March 23-30
(vsnet-campaign-dn 2235). B. Monard confirmed superhumps with a
period of 0.0622 d. The object is now established as a genuine
SU UMa-type dwarf nova (vsnet-campaign-dn 2243). The outburst is
still ongoing (vsnet-campaign-dn 2256, 2261).
SN 2002bv (RA = 07h50m01s.13, Dec = +30d01'32".2)
SN 2002bv was discovered by the LOTOSS team at 17.8mag in
images taken on March 29 and 30. UGC 4042 = the host of SN
2002bv is a distant spiral galaxy. The expected maximum for
typical SN Ia is mag about 17.0 (vsnet-campaign-sn 396).
The CfA team reported that it is type IIn supernova
(vsnet-campaign-sn 399).
SN 2002bw (RA = 17h16m35s.60, Dec = -10d20'31".8)
SN 2002bw was discovered by the LOTOSS team at 17.4mag in
images taken on March 31 and April 1. PGC 59990 = the host
galaxy of SN 2002bw is a faint spiral galaxy, affected the
Galactic extinction. The expected maximum of typical SN Ia is
mag about 17.5 in R (vsnet-campaign-sn 396).
SN 2002bx (RA = 09h19m54s.98, Dec = +37d12'08".3)
SN 2002bx was discovered by the KAIT team on March 31 at mag
about 16.9, and confirmed on the next night (mag 16.8). T.
Boles independently discovered it on Apr. 1.943, when he estimated
the magnitude as 16.2. The position of the new object is about
37" west and 40" north of the nucleus of the edge-on spiral
galaxy IC 2461. The expected maximum for SN Ia is mag about 14.0
(vsnet-campaign-sn 396, 397). The CfA team revealed that it is
normal type-II SN caught on the early phase (vsnet-campaign-sn 399).
NSV 10934 (RA = 18h40m52s.26, Dec = -83d43'10".24)
As reported by R. Stubbings on April 4, NSV10934 experienced a
bright outburst (12.7mag) (vsnet-campaign-dn 2248). The fading
started since April 5 (vsnet-campaign-dn 2258, 2278).
Z Cha (RA = 08h07m16s.29, Dec = -76d32'20".9)
R. Stubbings detected an outburst of the eclipsing SU UMa
star Z Cha at 12.8mag on April 4 (vsnet-campaign-dn 2250).
The object then rapidly faded. It was a normal outburst
(vsnet-campaign-dn 2259).
V589 Her (RA = 16h22m07s.19, Dec = +19d22'36".3)
M. Simonsen detected a relatively rare outburst of V589 Her
on April 4 at 14.7mag (vsnet-campaign-dn 2251). T. Kato
reported a possible detection of an eclipse-like dip in
the light curve on April 5 (vsnet-campaign-dn 2257). T. Vanmunster
detected modulations with 0.12mag amplitude and ~0.1 d period,
and no eclipse-like dip (vsnet-campaign-dn 2265). On April 6,
T. Vanmunster revealed that the object is a new SU UMa-type
dwarf nova by his detection of superhumps with a period of
0.086 d (vsnet-campaign-dn 2269). T. Kato commented that the
previously reported quiescent identification means too small
outburst amplitude (~3 mag) for SU UMa stars (vsnet-campaign-dn
2270). The outburst still continues (vsnet-campaign-dn 2260, 2275).
SN 2002bz (RA = 14h24m40s.52, Dec = +26d37'34".7)
SN 2002bz was discovered by the Puckett Observatory team at
16.9mag in images taken on April 3. This is a distant SN whose
expected maximum of typical SN Ia is mag about 17.0
(vsnet-campaign-sn 400).
SN 2002ca (RA = 13h32m31s.51, Dec = +01d50'42".5)
The host galaxy of SN 2002ca is UGC 8521. The expected
maximum for typical SN Ia is mag about 15.0, but the reported
magnitude does not changed for one day, which suggest that it
would not be of type Ia in the early rising phase
(vsnet-campaign-sn 400).
IY UMa (RA = 10h43m56s.87, Dec = +58d07'32".5)
T. Kato commented that the next superoutburst of the eclipsing
SU UMa star IY UMa is due, and encouraged close monitoring
(vsnet-campaign-dn 2267).
SN 2002by (RA = 17h50m18s.58, Dec = -59d33'51".6)
The host galaxy of SN 2002by is ESO 139-G34, in which the
expected maximum for typical SN Ia is mag about 15.5. According
to IAUC 7866, the CTIO spectrum (only blueward) shows that the
new object is indeed a supernova, possibly of type I. The position
of SN 2002by is about 25" west and 13" south of the center of
ESO 139-G34 (vsnet-campaign-sn 401).
UV Gem (RA = 06h38m44s.16, Dec = +18d16'11".5)
A superoutburst was detected by M. Simonsen on April 7
at 14.7mag. During the 2001 February outburst, the humps and the
outburst showed unusual development (vsnet-campaign-dn 2274).
(continuous targets)
SN 2002bt (RA = 13h36m13s.20, Dec = -01d02'19".8)
The CfA team reported that it is of type Ia, about 2 weeks after
maximum on Apr. 3 (vsnet-campaign-sn 399).
SN 2002bu (RA = 12h17m37s.18, Dec = +45d38'47".4)
The object is now at about 15mag (vsnet-campaign-sn 392, 395, 403).
CP Dra (RA = 10h15m39s.88, Dec = +73d26'05".4)
M. Uemura reported that the light curve taken at Kyoto on
March 31 shows humps with a period of about 0.064 d. This is
quite shorter than that previously reported (0.08348 d).
(vsnet-campaign-dn 2236). The object faded from the outburst
on April 4 (vsnet-campaign-dn 2271).
KS UMa (RA = 10h20m26s.54, Dec = +53d04'33".5)
A superoutburst of KS UMa started on April 3 (vsnet-campaign-dn
2249, 2262, 2266, 2276).
GZ Cnc (RA = 09h15m51s.70, Dec = +09d00'50".2)
A new outburst was reported by P. A. Dubovsky on April 2.
Such a short interval of successive outbursts has not been
observed for this object in the past (vsnet-campaign-dn 2238).
The object faded to 14.7: mag on April 3 (vsnet-campaign-dn 2245).
Nova LMC 2002 (RA = 05h36m46s.4, Dec = -71d35'35".34)
The object is gradually fading. It seems to enter 13th mag
in the early last week (vsnet-campaign-nova 895).
RX J0558.3+6735 (RA = 05h58m18s.0, Dec = +67d53'45")
The observation by the Kyoto team on April 1 detected two
superhumps with a long period of ~0.09 d (vsnet-campaign-dn 2227,
2229, 2230, 2232). The object faded by 0.4-0.5mag/d on April 2
and the humps became less prominent (vsnet-campaign-dn 2239, 2242).
Using combined light curves taken by the Kyoto team, the Nyrola
team and J. Pietz, M. Uemura reported a hump period of 0.080796 d,
and suggested that it is an SU UMa-type dwarf nova having a
relatively large fading rate (vsnet-campaign-dn 2237, 2272).
H. Yamaoka performed astrometry using the Kyoto image, and
reported that the object is identified with the 2MASS object
which was suggested by B. Skiff (vsnet-campaign-dn 2247).
The outburst is ongoing (vsnet-campaign-dn 2228, 2244).
AM Cas (RA = 02h26m23s.40, Dec = +71d18'32".3)
The unusual state with intermediate brightness (~14mag) still
continues (vsnet-campaign-dn 2246).
IM Nor (RA = 15h39m26s.47, Dec = -52d19'18".2)
The fading continues (vsnet-campaign-nova 896).
SN 2002bo (RA = 10h18m06s.51, Dec = +21d49'41".7)
The object is now slowly fading. It is now at 14th mag
(vsnet-campaign-sn 393, 394, 395, 398, 402).
GK Per (RA = 03h31m12s.50, Dec = +43d54'17".8)
The brightening at 0.05mag/d continued until April 5 when
M. Uemura detected a 0.14mag fading (vsnet-campaign-gkper 77, 78,
80, 81, 82). The power spectrum in high frequencies is dominated
by the spin periodicity. A possible longer periodicity was
reported on April 1 and 2 by M. Uemura (vsnet-campaign-gkper 79, 82).
V803 Cen (RA = 13h23m44s.5, Dec = -41d44'30".1)
The outburst again entered a oscillation phase
(vsnet-campaign-dn 2241, 2254, 2279).
V1039 Cen (RA = 13h55m41s.27, De = -64d15'57".9)
The object is gradually fading now (vsnet-campaign-nova 897).
V2540 Oph (RA = 17h37m34s.36 Dec = -16d23'18".4)
The rebrightening to 8.7mag on March 31 and to 8.9mag
on April 4 were reported by A. Pearce and R. J. Modic, respectively
(vsnet-campaign-nova 894, 898).
V838 Mon (RA = 07h04m04s.816, Dec = -03d50'50".94)
The object was relatively calm at about 7.8mag until April 5-6
when the object started rapider fading (vsnet-campaign-v838mon 320,
321, 322, 323, 324, 325, 326, 328, 329). C. Buil reported that
the spectrum is now very complex (vsnet-campaign-v838mon 327).
HL CMa (RA = 06h45m17s.0, Dec = -16d51'35")
The object is still in a standstill (vsnet-campaign-dn 2264).
FG Sge (RA = 20h11m56s.14, Dec = +20d20'03".6)
The faint state was reported to still continue
(vsnet-campaign-rcb 22).
*** 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 ***
SN 2002ap
recent papers, see [vsnet-campaign-sn2002ap 201]
SN spectra by the CfA team:
http://cfa-www.harvard.edu/cfa/oir/Research/supernova/RecentSN.html .
[vsnet-campaign-sn 399]
V838 Mon
spectra by C. Buil:
http://vsnet.astrosurf.com/buil/us/nmon/nmon.htm
[vsnet-campaign-v838mon 327]
Z Cha
eclipse ephemeris, see [vsnet-campaign-dn 2255]
V589 Her
Light curve by T. Vanmunster:
http://vsnet.lunarpages.com/cbabelgium
[vsnet-campaign-dn 2273]
(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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