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[vsnet-campaign 1327] VSNET Weekly Campaign Summary
VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
TU Men (RA = 04h41m38s.10, Dec = -76d36'09".7)
R. Stubbings detected an outburst (12.2mag) of the long-period
SU UMa-type dwarf nova TU Men on June 24. Although the magnitude
suggests a normal outburst, the object has not been seen in
outburst for nearly a year (vsnet-campaign-dn 2610).
V660 Her (RA = 17h42m07s.3, Dec = +23d47'37".3)
As reported by C. Jones on June 27, the (still poorly known)
SU UMa-type dwarf nova V660 Her experienced an outburst at
14.6-14.8 mag (vsnet-campaign-dn 2613, 2614). The outburst was
confirmed on June 28 and 29 without significant fadings
(vsnet-campaign-dn 2617), which indicates the outburst is
superoutburst (vsnet-campaign-dn 2619).
SN 2002ds (RA = 15h13m35s.73, Dec = -20d40'38".5)
The host galaxy of SN 2002ds is an inclined barred-spiral
galaxy ESO 581-G25, somewhat affected by the Galactic extinction.
The position is about 68" east and 7" south of the nucleus.
The expected maximum for typical SN Ia is mag about 14.5
(vsnet-campaign-sn 447). The spectrum of SN 2002ds was taken on
June 28.0, from which the UCB team revealed that it is of young
type-II event (vsnet-campaign-sn 448).
XB 1745-25 (RA = 17h48m05.244s, Dec = -24d46'47.7")
According to ATEL #101, the X-ray transient XB 1745-25 (in the
globular cluster Terzan 5) was found to be in outburst
(vsnet-campaign-xray 153).
SN 2002dw (RA = 18h54m15s.25, Dec = +48d55'37".3)
UGC 11376, the host galaxy of SN 2002dw is a spiral galaxy near
the Milky Way (b = 19o). The position of the SN is 8".1 east and
3".5 south of the nucleus of UGC 11376. The expected maximum for
typical SN Ia is mag about 16.6 (vsnet-campaign-sn 449).
A possible cataclysmic variable near SN 2002dw
The KAIT team also reported another (possibly cataclysmic)
variable in the same field. The position end figures of this
object is 06s.41, 18".5, which is about 1'.4 WSW of UGC 11376.
The reported magnitudes are: mag 19.7 on July 4.3, 19.4 on July 5.3.
On this position, no quiescent counterpart is seen on every DSS
images, except a marginally-detected object on DSS 2 red image.
About 6" south of the reported position, a quite dim (rmag about
19.5) object is seen on DSS2 blue, red, and infrared images
(vsnet-campaign-dn 2622).
WR106 (RA = 18h04m43s.5, Dec = -21d09'29")
According to K. Haseda, WR 106 seems to have recently undergone
a shallow fading episode (vsnet-campaign-wr 1).
(continuous targets)
IX Dra (RA = 18h12m32s.2, Dec = +67d04'41")
An outburst (15.3mag) was detected by G. Poyner on June 28
(vsnet-campaign-dn 2615).
SN 2002do (RA = 19h56m12s.88, Dec = +40d26'10".8)
According to IAUC 7927, it was indeed of type Ia, near maximum
on June 19.43 UT. The Si II absorption feature around 580 nm is
strongly seen, which may indicate that it is somewhat subluminous
(vsnet-campaign-sn 446).
SN 2002dp (RA = 23h28m30s.12, Dec = +22d25'38".8)
The CfA team revealed that it is of type Ia, near maximum on
June 20.47 UT (vsnet-campaign-sn 446).
SN 2002dq (RA = 21h19m49s.95, Dec = -08d46'39".8)
According to IAUC 7927, the spectrum taken on 20.42 shows that
it is of type II (vsnet-campaign-sn 446).
VW CrB (RA = 16h00m03s.76, Dec = +33d11'14".4)
The superoutburst is still ongoing (vsnet-campaign-dn 2616, 2618,
2620, 2623).
KL Dra (RA = 19h24m38s.14, Dec = +59d41'47".1)
The time-series observation by G. Masi (on June 22) and by
K. Tanabe (on June 21 and 22) shows superhumps with the amplitudes
of ~0.025mag (vsnet-campaign-dn 2609, 2611).
V4641 Sgr (RA = 18h19m21s.6, Dec = -25d24'25")
The observation by A. Takao shows the object was bright at
V=11.8mag on May 24.669 (vsnet-campaign-v4641sgr 106).
M. Rupen reported that V4641 Sgr became active again in the
radio range since June 24 (vsnet-campaign 1323,
vsnet-campaign-v4641sgr 99, 100). The object was reported to
subsided in the radio range on June 27 (vsnet-campaign 1324,
vsnet-campaign-v4641sgr 102). In the optical range, it was
relatively calm on June 27 (vsnet-campaign-v4641sgr 101, 103).
M. Rupen reported on June 29 that the radio observations by
VLA revealed that the object was still active with mini-flares
every few days (vsnet-campaign 1326, vsnet-campaign-v4641sgr 104).
The time-series observation by Y. Sano on June 30 shows moderate
rather irregular variation (amplitude up to 0.2 mag)
(vsnet-campaign-v4641sgr 105). T. Scarmato reported a brightening
to 12.0mag on July 5 (vsnet-campaign-v4641sgr 107), and the strong
activity was reported also in the optical range
(vsnet-campaign-v4641sgr 108, 109). The light curve obtained
by R. Santallo on July 7 shows dramatic repeated flare-like
brightenings by 0.5 mag. T. Kato reported that the typical
e-folding decay time of the flares was only a few minutes and
the rise usually took 30 s to 2 min (vsnet-campaign-v4641sgr 110).
delta Sco (RA = 16h00m19s.9, Dec = -22d37'17")
A possible rebrightening to 1.6mag was reported on June 27
(vsnet-campaign-be 193). Fainter magnitudes were reported
after June 28 (vsnet-campaign-be 194).
V348 Sgr (RA = 18h40m19s.94, Dec = -22d54'29".1)
The object is still bright at 14.2-14.3mag (vsnet-campaign-rcb 45).
V803 Cen (RA = 13h23m44.5s, Dec = -41d44'30".1)
Reported observations still show oscillations
(vsnet-campaign-dn 2612).
CR Boo (RA = 13h48m55s.42, Dec = +07d57'30".3)
The object is still at the bright state (~14mag)
(vsnet-campaign-dn 2621).
V2540 Oph (RA = 17h37m34s.36, Dec = -16d23'18".4)
The object is now fading and seemed to enter the 11th mag
(vsnet-campaign-nova 940).
SN 2002ap (RA = 01h36m23s.85, Dec = +15d45'13".0)
A. Henden reported V=16,4 with red (V-R) but blue(R-I) on
June 27, usually indicative of strong Halpha emission
(vsnet-campaign-sn2002ap 202). In IAUC 7930, multicolor
observations during June 12-18 were reported (vsnet-campaign-sn2002ap
203).
AM Her (RA = 18h16m13s.4, Dec = +49d52'03".1)
The object became again fainter at 15.1mag on June 28 and 29
(vsnet-campaign-polar 6).
FG Sge (RA = 20h11m56s.14, Dec = +20d20'03".6)
Reported observations may indicate that the object is again
fading (vsnet-campaign-rcb 43).
SV Sge (RA = 19h08m11s.75, Dec = +17d37'41".3)
Observations during June may show a gradual fading
(vsnet-campaign-rcb 44).
*** Future schedule ***
Observations of AM Her with HST
B. Gaensicke reported that they have Hubble Space Telescope
observations of the magnetic cataclysmic variable AM Herculis
scheduled for July 11/12. Close monitoring of the activity of
the star throughout the next 3 weeks would be very helpful for
the interpretation of the HST data.
[vsnet-campaign 1325]
[vsnet-campaign-polar 5]
International Workshop
HIGH RESOLUTION X-RAY SPECTROSCOPY with XMM-NEWTON and CHANDRA
24th and 25th October 2002
For more details, visit the workshop website:
http://vsnet.mssl.ucl.ac.uk/~gbr/rgs_workshop/
[vsnet-campaign-xray 152]
===== International Symposium ======
"The Universe Viewed in Gamma-rays
--- Univ. Tokyo Workshop 2002 ---"
September 25-28, 2002, Kashiwa, Chiba, Japan
http://icrhp9.icrr.u-tokyo.ac.jp/Symp2002.html
[vsnet-campaign-blazar 265]
International Symposium: The Universe viewed in gamma-rays
--- Univ. Tokyo Workshop 2002 ---
September 25-28, 2002, Kashiwa, Chiba, Japan
http://icrhp9.icrr.u-tokyo.ac.jp/Symp2002.html
[vsnet-campaign-blazar 264]
Texas in Tuscany
XXI Symposium on Relativistic Astrophysics
Florence, Italy, December 9-13, 2002
For more information:
http://vsnet.arcetri.astro.it/~texaflor/
[vsnet-campaign-xray 142]
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]
*** General information ***
SN 2002dw
The discovery image:
http://astron.berkeley.edu/~bait/2002/sn2002dw.html
[vsnet-campaign-sn 449]
(This summary can be cited.)
Regards,
Makoto Uemura
Return to Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
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