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[vsnet-campaign 1344] VSNET Weekly Campaign Summary
VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
SAX J1808.4-3658 (=V4580 Sgr)
(RA = 18h08m27s.67, Dec = -36d58'43".9)
B. Monard detected an optical counterpart of the msec accreting
pulsar, SAX J1808.4-3658 during its X-ray outburst. The object was
16.6CR mag on October 16.90 (vsnet-campaign-xray 161). The object
underwent an optical outburst reaching a similar optical magnitude
(V=16.6) in 1998 (vsnet-campaign-xray 162).
Probable nova in SMC
(RA = 00h56m30s.4, Dec = -72d36'29".4)
W. Liller reported a probable nova in SMC. The object was
12.3mag on Oct 16 and V=12.66 on October 17. No star brighter than
magnitude 14 was seen on images taken at U.T Oct 9.29
(vsnet-campaign-nova 1096, 1097). W. Liller reported it to be
V=13.48 on October 19 (vsnet-campaign-nova 1100, 1105). M. Morel
commented that the object falls exactly on the line between the
stars #1 and #7 in the chart in J. Vigneau and M. Azzopardi (1982)
(vsnet-campaign-nova 1102).
GSC 6846:6
D. West reported that this new variable near V4742 Sgr is getting
brighter (V=11.03) on October 18 (vsnet-campaign-unknown 115). He
then reported Rc=9.21 on October 17 and H alpha emission is probably
not present (vsnet-campaign-unknown 116).
U Aqr (RA = 22h03m19s.72, Dec = -16d37'35".3)
It has recently been reported to be brighter (vsnet-campaign-rcb 77).
RY Sgr (RA = 19h16m32s.77, Dec = -33d31'20".3)
S. Otero reported that RY Sgr entered a deep minimum. The current
pulsation cycle is fainter (0.3 mag.) and the amplitude is clearly
decreasing probably due to the material that has already been
ejected and compensates the current rising branch
(vsnet-campaign-rcb 79).
V1316 Cyg (RA = 20h12m12s.68, Dec = +42d45'53".0)
The observation by M. Moriyama on August 20 indicates an outburst
of 15.50C mag (vsnet-campaign-dn 2910).
FSVJ1722+2723 (RA = 17h22m43s.96, Dec = +27d23'55".7)
Ha0242-2802 (RA = 02h42m34s.8, Dec = -28d02'43")
According to Howell et al., astro-ph/0210432, two new faint CVs
whose spectra resemble those of WZ Sge in quiescence have been
discovered. The quiescent magnitudes of FSVJ1722+2723 and
Ha0242-2802 are V=20.4-21.0 and B=19, respectively. Both objects
are very good candidate for monitoring for outbursts and prompt
time-resolved photometry when they are detected in outburst
(vsnet-campaign-dn 2911, 2912).
(continuous targets)
GX Cas (RA = 00h49m01s.46, Dec = +56d52'44".8)
The object experienced an outburst reaching 14.1mag on October 8,
and then, rapidly faded (vsnet-campaign-dn 2893).
RX And (RA = 01h04m35s.55, Dec = +41d17'58".0)
The object is now fading. It may indicate another start of a
faint state (vsnet-campaign-dn 2904).
IX Dra (RA = 18h12m32s.2, Dec = +67d04'41")
The Kyoto team has recorded an ongoing superoutburst of IX Dra.
The object was caught in rise on October 10. A superoutburst
plateau has lasted since then. Superhumps have been detected on all
analyzed runs during the superoutburst plateau. The detection of
likely superhumps during the rising branch makes a further
confirmation of early-time appearance of large-amplitude superhumps
in ER UMa stars (vsnet-campaign-dn 2907).
Var73 Dra (RA = 20h23m38s.193, Dec = +64h36m26s.91)
The bright state was confirmed on October 12, indicating a
superoutburst (vsnet-campaign-dn 2889). The superhumps were most
prominent on Oct. 9. B. Martin's observation suggests that the
amplitude of the superhumps has decreased, together with possible
appearance of secondary superhumps between the superhumps. T. Kato
reported that a preliminary period analysis suggests a period near
0.095 d, but a longer alias (P=0.105 d) is also promising
(vsnet-campaign-dn 2899). The data taken by L. Cook on October 15
show low-amplitude superhumps (vsnet-campaign-dn 2903). In the
terminal stage of the superoutburst, the light curve taken by
D. Starkey shows the persistent superhumps. T. Kato reported that a
refined period analysis seems to favor a longer alias
(vsnet-campaign-dn 2906). G. Masi reported that it was Rc=16.5 with
broad late-superhumps on October 18 (vsnet-campaign-dn 2908). The
superoutburst is now ongoing (vsnet-campaign-dn 2900, 2901).
TY Psc (RA = 01h25m36s.87, Dec = +32d23'05".3)
The object entered the rapid fading phase from the superoutburst
(vsnet-campaign-dn 2892).
TY PsA (RA = 22h49m40s.31, Dec = -27d06'54".3)
In the light curve taken by G. Bolt on October 13, a clear
superhump (0.2 mag) is clearly visible (vsnet-campaign-dn 2902).
The superoutburst continues (vsnet-campaign-dn 2894).
GU Sgr (RA = 18h24m15s.57, Dec = -24d15'26".1)
The faint state continues (vsnet-campaign-rcb 75).
Z And (RA = 23h33m40s.02, Dec = +48d49'06".1)
After a slow brightening around 10.2-10.4mag
(vsnet-campaign-symbio 36), M. Simonsen reported an outburst to
9.7mag on October 14 (vsnet-campaign-symbio 38).
RZ Sge (RA = 20h03m18s.49, Dec = +17d02'52".6)
The superoutburst was observed at least until October 10
(vsnet-campaign-dn 2895).
Z Cha (RA = 08h07m16s.29, Dec = -76d32'20".9)
A normal outburst (12.8mag) was detected on October 11 by
R. Stubbings (vsnet-campaign-dn 2890).
SN 2002gb (RA = 22h43m21s.31, Dec = -00d06'53".0)
Spectra taken at Las Campanas and Keck-I (Oct. 8) revealed that it
is type Ia SN about 20-30 days after maximum light. The recession
velocity of the galaxy was measured as 22000 km/s (vsnet-campaign-sn
483).
SN 2002gc (RA = 01h55m46s.56, Dec = +46d48'19".4)
The UCB team took a spectrum with Keck-I telescope on Oct. 8,
which shows it is a type Ia SN with some peculiarities, A Si II/Ti
II 580-nm absorption feature (typical for subluminous SN Ia) was
prominent, but Ti II 420-nm absorption (also seen in subluminous SN
Ia) was absent. Such characteristics resembles that of SN Ia 2002eu
which had a normal luminosity (vsnet-campaign-sn 483).
AG Dra (RA = 16h01m40s.98, Dec = +66d48'10".3)
The brightening trend continues (vsnet-campaign-symbio 37).
HX Peg (RA = 23h40m23s.37, Dec = +12d37'44".0)
The object experienced an outburst from the standstill
(vsnet-campaign-dn 2905).
V660 Her (RA = 17h42m07s.3, Dec = +23d47'37".3)
A normal outburst of 15.2mag on October 6 had been faded
(vsnet-campaign-dn 2897).
AH Her (RA = 16h44m09s.99, Dec = +25d15'02".1)
The object faded from the standstill (vsnet-campaign-dn 2913).
V348 Sgr (RA = 18h40m19s.94, Dec = -22d54'29".1)
It is now gradually brightening. The current magnitude is around
12.4mag (vsnet-campaign-rcb 76).
BL Lac (RA = 22h02m42s.86, Dec = +42d16'37".6)
The object is still active (vsnet-campaign-blazar 277).
MisV1147 (RA = 22h54m03s.78, Dec = +58d54'02".1)
The object remains at the bright at about 13mag
(vsnet-campaign-unknown 114, 118).
V Sge (RA = 20h20m14s.75, Dec = +21d06'09".0)
The object is now fading (vsnet-campaign-nl 97).
V4743 Sgr (RA = 19h01m09s.38, Dec = -22d00'06".2)
The fading continues (vsnet-campaign-nova 1104).
V4742 Sgr (RA = 18h02m21s.864, Dec = -25d20'32".22)
The fading continues (vsnet-campaign-nova 1099, 1104).
V838 Mon (RA = 07h04m04s.816, Dec = -03d50'50".94)
The object was faint in V-band (<13.8mag) on October 13, as
reported by A. Takao (vsnet-campaign-v838mon 390). A. Henden
reported V~15.7 on October 14 (vsnet-campaign-v838mon 391).
V854 Cen (RA = 14h34m49s.8, Dec = -39d33'18")
A new fading was reported by S. Otero on October 10
(vsnet-campaign-rcb 74).
Possible Nova in M110
T. Kato reported: The (presumable) nova was rapidly rising at the
time of Itagaki's discovery, and showed a very rapid decline
thereafter (the post-discovery light curve even resembles that of
V1500 Cyg). Judging from Itagaki's observation, the nova was then
rising at a rate of 0.3 mag/hr. The present observation is far
brighter than a smooth extrapolation of this rising rate, suggesting
that the nova was in "premaximum halt" phase. The premaximum halts
in very fast novae usually last several hours. The bright positive
detection 1 d before the final rise is thus already surprising
(vsnet-campaign-nova 1101, 1106).
*** Future schedule ***
International Workshop -- Extremely High Energy Cosmic Rays --
November 5-6, 2002
at RIKEN (The Institute of Physics and Chemical Research), Japan
Suzuki Umetaro Hall (#52), South Area, Wako main campus
Contact to: workshop2002@euso.riken.go.jp
[vsnet-campaign-grb 8]
IAU Colloquium 194
"Compact Binaries in the Galaxy and Beyond"
17-22 November 2003, La Paz, Mexico
Contact Details
Web page: http://bufadora.astrosen.unam.mx/~iau194
Email: iau194@astrosen.unam.mx
[vsnet-campaign-sn 467]
[vsnet-campaign-xray 154]
International Workshop
HIGH RESLUTION 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]
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]
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]
*** General information ***
V838 Mon
A. Takao's CCD image of brightened V838 Mon:
http://vsnet.kusastro.kyoto-u.ac.jp/pub/vsnet/Novae/gsc4822.39/takao021013.jpg
[vsnet-campaign-v838mon 389]
[vsnet-campaign-v838mon 392]
V, Rc, and Ic-band CCD images by S. Kiyota:
http://vsnet.milky.ne.jp/~meineko/CCD/V838VRcIc.jpg
[vsnet-campaign-v838mon 393]
Z Cha
Eclipse ephemeris, see [vsnet-campaign-dn 2890]
Possible nova in SMC
Sequence presented in VIGNEAU J. and AZZOPARDI M. (1982),
see [vsnet-campaign-nova 1103]
GSC 6846:6
Observations by D. West:
http://members.aol.com/dwest61506/page34.html
http://members.aol.com/dwest61506/page35.html
[vsnet-campaign-unknown 116]
Chart provided by D. West:
http://hometown.aol.com/dwest61506/index.html
[vsnet-campaign-unknown 117]
(This summary can be cited.)
Regards,
Makoto Uemura
Return to Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
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