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[vsnet-campaign 1289] VSNET Weekly Campaign Summary
VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
HT Cas (RA = 01h10m12s.98, Dec = +60d04'35".9)
On February 5, the eclipsing SU UMa-type dwarf nova HT Cas
experienced a rare outburst as reported to be 13.6mag by
P. A. Dubovsky (vsnet-campaign-dn 2095, vsnet-campaign-htcas 2,
vsnet-campaign-news 132). The Kyoto team performed time-series
observations and detected 1.0mag eclipses without clear superhumps
(vsnet-campaign-dn 2097, vsnet-campaign-htcas 5, 6, 8).
T. Vanmunster also performed time-series photometry of an eclipse
and reported that clear humps were not seen (vsnet-campaign-dn 2098,
2099). J. Pietz then detected 1.2-mag eclipse (vsnet-campaign-dn
2100). A subsequent observation by T. Krajci show a 1.5-mag
eclipse, which suggests that the luminous part of the accretion disk
was shrinking (vsnet-campaign-dn 2103). The outburst lasted until
the late February 7, and then faded (vsnet-campaign-dn 2101, 2104,
vsnet-campaign-htcas 3, 4, 7, 9, 11, 13, 16, 17). During the
fading phase, T. Krajci reported 0.2 magnitude oscillations
(vsnet-campaign-htcas 12), which T. Kato suggested to be orbital
humps (vsnet-campaign-htcas 14).
FT Cam (RA = 03h21m14s.39, Dec = +61d05'25".9)
A relatively rare outburst of FT Cam (14.0-13.8mag) was
reported by M. Reszelski on February 4 (vsnet-campaign-dn 2092).
SN 2002ar (RA = 11h37m43s.92, Dec = +22d00'34".4)
SN 2002ar appeared in the compact group of galaxies HCG 57.
The host barred-spiral galaxy NGC 3746 is the brightest one in
this group. SN is embedded in the bulge, quite near from the
nucleus. The discovery magnitude (16.5mag) is near to the
expected maximum for typical SN Ia (vsnet-campaign-sn 341).
SN 2002as (RA = 06h12m25s.05, Dec = +44d26'16".8)
The host galaxy of SN 2002as is the barred-spiral galaxy
UGC 3418. The expected maximum for typical SN Ia is mag about
16.8 (vsnet-campaign-sn 341). IAUC 7823 informed that SN 2002as
is of type II near maximum (vsnet-campaign-sn 344).
SN 2002at (RA = 11h32m21s.95, Dec = +00d48'08".8)
NGC 3720, the host galaxy of SN 2002at, makes a pair (KPC 289)
with NGC 3719 (brighter than NGC 3720). NGC 3720 itself is a
early-type spiral galaxy, and the SN appeared very close to the
nucleus. The expected maximum for typical SN Ia is mag about
16.2 (vsnet-campaign-sn 343).
CT Hya (RA = 08h51m04s.50, Dec = +03d07'43".5)
As reported by M. Simonsen on February 8, a bright outburst
of CT Hya (13.7mag) was detected (vsnet-campaign-dn 2107).
HS Vir (RA = 13h43m38s.5, Dec = -08d14'04".1)
HS Vir is reported to be in bright outburst (V=13.6, M. Simonsen).
This may be a superoutburst (vsnet-campaign-dn 2110).
CXOU J004307.0+411809 (RA = 00h43m07s.099, Dec = +41d18'09".95)
According to ATEL #82, this new X-ray transient is discovered
in M31 (vsnet-campaign-xray 112).
(continuous targets)
SN 2002ap (RA = 01h36m23s.85, Dec = +15d45'13".0)
The brightening rate seems to become more gradual as reported
by a number of observers (vsnet-campaign-sn2002ap 75, 79, 80, 81,
82, 83, 84, 85, 86, 89, 90, 91, 92, 94, 95, 96, 97, 98, 99, 100,
101, 102, 103, 104, 105, 106, 107, 114, 115, 117, 118, 119, 120,
121). L. Cook reported on February 10 that the object continued
to brighten in I and R and fade in V. The star was getting redder
(vsnet-campaign-sn2002ap 116). L. Wang et al. reported that their
spectroplarimetry revealed a sharp change of the degree of
polarization by more than 1 percent. The polarization of this
particular feature may provide important clues of the structure of
the supernova envelope (vsnet-campaign-sn2002ap 76).
P. Vreeswijk et al. analized the pre-outburst image and reported
that the SN is not coincident with the V = 21.2 object reported
as a possible progenitor. There is no object in the pre-discovery
images at the SN position, to limiting magnitudes V = 22.0
(vsnet-campaign-sn2002ap 87, 88).
QZ Ser (RA = 15h56m55s.02, Dec = +21d07'12".1)
P. Schmeer forwarded the comments by J. Thostensen, in which
he noticed that the identification of QZ Ser formerly marked in
the Downes live CV atlas was incorrect (see also vsnet-campaign
1288), and that the quiescent spectrum showed a strong contribution
from a late-type secondary star. This indicates the orbital period
is relatively long (vsnet-campaign 1285, vsnet-campaign-dn 2090).
P. Schmeer reported the outburst amplitude is estimated to be 5 mag
on the basis of the correct identification (vsnet-campaign 1286).
The object significantly faded on February 5 and the outburst
finished (vsnet-campaign-dn 2091, 2096).
V2540 Oph (RA = 17h37m34s.36 Dec = -16d23'18".4)
=Nova Oph 2002
The object is gradually fading. It was at about 9.6mag
(vsnet-campaign-nova 824).
SN 2002an (RA = 08h22m47s.76, Dec = +24d17'41".7)
According to IAUC 7818, the spactrum taken on Jan. 31 at Wise
Observatory shows a blue continuum with narrow H-alpha emission,
resembles that of SN IIn 1998S around maximum. The brightest
reported magnitude of SN 2002an is 155CR on Jan. 25, which is
near to the expected maximum of SN Ia (vsnet-campaign-sn 340).
SX LMi (RA = 10h54m29s.93, Dec = +30d06'30".0)
The rapid fading from the superoutburst was reported on
February 4 (vsnet-campaign-dn 2093, 2094).
FS Aur (RA = 05h47m48s.34, Dec = +28d35'11".1)
P. A. Dubovsky reported an outburst of 14.5 on February 5
(vsnet-campaign-dn 2102), which was confirmed by M. Simonsen
on February 8 at 14.3mag (vsnet-campaign-dn 2108).
MisV1147 (RA = 22h54m03s.78, Dec = +58d54'02".1)
As reported by P. A. Dubovsky, MisV1147, this emission-line
object of unknown type, is apparently fading. The object faded
to 13.9mag on February 5 (vsnet-campaign-unknown 64).
V838 Mon (RA = 07h04m04s.816, Dec = -03d50'50".94)
The brightening rate became more gradual as reported by a number
of observers (vsnet-campaign-v838mon 53, 55, 56, 57, 58, 59, 60,
62, 65, 66, 67, 68, 71, 73, 74, 76, 77, 80, 81, 82, 83, 84, 85,
86, 88, 90, 91, 92, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104,
106, 107, 109, 110, 111, 112, 113, 115, 116, 117, 118). Then,
on February 8, the object was reported to possibly enter in a fading
stage (vsnet-campaign-v838mon 119, 120, 121, 122, 130, 131, 133,
134, 135, 136). Before this, on February 4, a possible fading was
reported, but the observation turned out to be a mis-identification
(vsnet-campaign-v838mon 72, 78, 79, 89, 105). M. Fujii reported
that H-alpha emission became stronger on January 29, and the red
end of the continuum became weaker (vsnet-campaign-v838mon 93).
C. Buil also reported that H-alpha emission became strong from
February 4 to 7 (vsnet-campaign-v838mon 116).
U Gem (RA = 07h55m05s.55, Dec = +22d00'09".2)
Several observers have reported a slight brightening (~13.6 mag)
of U Gem (vsnet-campaign-dn 2109).
BZ Cam (RA = 06h29m34s.49, Dec = +71d04'39".5)
The object is still bright and active between 11.9-12.6mag
(vsnet-campaign-nl 61).
IM Nor (RA = 15h39m26s.47, Dec = -52d19'18".2)
The slow fading continues. It is now at about 9.8mag
(vsnet-campaign-nova 821, 822, 823).
UX Ori (RA = 05h04m30s.39, Dec = -03d47'18".3)
The object began rising from the deep minimum
(vsnet-campaign-orion 12).
HL CMa (RA = 06h45m17s.0, Dec = -16d51'35")
The fading almost stopped at about 12.7mag (vsnet-campaign-dn 2106).
V1039 Cen (RA = 13h55m41s.27, De = -64d15'57".9)
The object has shown some modulations. A. Retter mentioned
in [vsnet-campaign-nova 825] that denser cover is desired to
understand whether these features are the famous quasi-periodic
oscillations during the transition phase, or that they are
random variations.
BL Lac (RA = 22h02m42.86s, Dec = +42d16'37.6")
The object is now fading from the last outburst
(vsnet-campaign-blazar 250).
*** Future schedule ***
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 ***
V838 Mon
Discovery story by MEDUZA observers, see [vsnet-campaign-v838mon 61]
Captured movie on TV about V838 Mon in Czech,
see [vsnet-campaign-v838mon 54]
Spectrum obtained by C. Buil:
http://vsnet.astrosurf.com/buil/us/nmon/nmon.htm
[vsnet-campaign-v838mon 63,108,
116,132]
Photometric sequence presented by D. West,
see [vsnet-campaign-v838mon 64]
Image provided by C. Sherrod:
http://vsnet.arksky.org/asoimg/V838mon0204.jpg
[vsnet-campaign-v838mon 66]
Spectrum taken by M. Fujii:
http://vsnet1.harenet.ne.jp/~aikow/v838_0203.gif
[vsnet-campaign-v838mon 69]
http://vsnet1.harenet.ne.jp/~aikow/v838_01_27_29.gif
[vsnet-campaign-v838mon 93]
Spectrum taken by K. Ayani:
http://vsnet.town.bisei.okayama.jp/bao/astro/nova/v838mon0203.gif
[vsnet-campaign-v838mon 70]
Color picture taken by O. Pejcha:
http://var.astro.cz/meduza/v838mon.jpg
[vsnet-campaign-v838mon 75]
Images taken by T. Scarmato:
http://digilander.iol.it/infosis/homepage/astronomia/comet.html
http://digilander.iol.it/infosis/homepage/astronomia/comet1.html
[vsnet-campaign-v838mon 86,87]
Time-series data on February 4/5 by L. Kral,
see [vsnet-campaign-data 88]
SN 2002ap
Photometric data provided by A. Henden:
http://ftp.nofs.navy.mil/pub/outgoing/aah/sequence/sn2002ap.dat
[vsnet-campaign-sn2002ap 77,78]
Light curve provided by P. Vreeswijk:
http://vsnet.astro.uva.nl/~pmv/sn2002ap.ps
[vsnet-campaign-sn2002ap 93]
HT Cas
New list: [vsnet-campaign-htcas], see [vsnet-campaign-dn 2105]or
[vsnet-campaign-htcas 1]
Eclipse ephemeris, see [vsnet-campaign 1287]
U Gem
Eclipse ephemeris, see [vsnet-campaign-dn 2109]
Caution:
Due to local mail-sever troubles, I lost some e-mails posted to
VSNET during February 8.?? - 10.??. So, this week "Campaign Summary"
does not contain all articles posted to vsnet-campaign and sub-lists.
Sorry for 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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