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[vsnet-campaign 1328] VSNET Weekly Campaign Summary
VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
V1141 Aql (RA = 19h37m10s.01, Dec = +02d35'59".2)
As reported by M. Reszelski on July 8, the SU UMa-type dwarf
nova V1141 Aql experienced a possible superoutburst of 15.2mag
(vsnet-campaign-dn 2625). The outburst was confirmed on July 12,
which indicated the outburst is a superoutburst (vsnet-campaign-dn 2631).
A. Olech reported the detection of a superhump whose period is
most likely 85 min and possibly 90 min (vsnet-campaign-dn 2638, 2639).
SDSSp J161332.56-000331.0 (RA = 16h12m32s.56, Dec = -00d03'31".0)
An outburst (July 8, V=15.5; July 9, V=15.7) was reported
by A. Henden (vsnet-campaign-dn 2626).
QR And (RA = 00h19m49s.90, Dec = +21d56'52".1)
A sudden fading to 13.0mag was reported on July 10
(vsnet-campaign-nl 89).
omicron Cet (RA = 02h19m20s.67, Dec = -02d58'27".1)
Observations by K. Nakai show the object is rising or near
maximum (3.8mag on July 11)(vsnet-campaign-mira 24, 25, 26).
SS UMi (RA = 15h51m22s.4, Dec = +71d45'11".1)
The object was reported to remain at 15.5-15.9mag from
July 5. Although it is faint, the object may be in superoutburst
now (vsnet-campaign-dn 2633).
SN 2002dx (RA = 23h57m06s.73, Dec = +29d50'15".5)
SN 2002dx was discovered by the KAIT team on images taken on
July 8.5 (mag about 18.8) and 9.5 (mag about 18.9). The host
galaxy is UGC 12861, a faint spiral galaxy. The expected maximum
for typical SN Ia is mag about 16.7, but it seems not to be of
this type in the early phase (vsnet-campaign-sn 450).
SN 2002dy (RA = 23h28m23s.27, Dec = -02d48'17".0)
SN 2002dy was discovered by the KAIT team on images taken on
July 8.5 and 9.5 UT (mag about 17.0). MCG -01-59-24, the host
galaxy of SN 2002dy, is a distant spiral galaxy, which makes a
pair with MCG -01-59-25 (1'.3 NE). The CfA spectrum taken on
July 10.47 UT revealed that it is of type II, and the narrowness
(FWHM = 3100 km/s) of the hydrogen emission suggest that it
would be of type IIn. The discovery magnitude is as bright as
the expected maximum for typical SN Ia, which is consistent with
bright SN IIn nature. Such bright SN IIn, which somebody call as
"type IIn hypernovae", are thought to be related with the gamma-ray
bursts (GRBs), but no GRB detection in this field was reported in
these three months (vsnet-campaign-sn 450).
PU Vul (RA = 20h21m13s.30, Dec = +21d34'18".0)
Several observers have independently noted that the symbiotic
nova PU Vul has suddenly faded to 12.2 mag. Since PU Vul is
suspected to be a long-period eclipsing system, follow-up multicolor
photometry and spectroscopy are encouraged (vsnet-campaign-symbio 21).
V1008 Her (RA = 18h05m46s.31, Dec = +31d40'18".1)
A relatively rare outburst (13.6-13.8mag) was reported on
July 14. The last confirmed outburst occurred in 2001 August
(vsnet-campaign-dn 2640).
(continuous targets)
V503 Cyg (RA = 20h27m15s.61, Dec = +43d41'45".5)
A possible superoutburst (13.7mag) was reported on July 10
by J. Ripero (vsnet-campaign-dn 2627). The outburst was confirmed
on July 11 (vsnet-campaign-dn 2630). The superoutburst is
still ongoing (vsnet-campaign-dn 2632).
SN 2002dv (RA = 19h49m48s.72, Dec = +50d41'57".3)
The UCB group has revealed that it is young SNe II based on
spectra taken on July 11 (vsnet-campaign-sn 451).
SN 2002dw (RA = 18h54m15s.25, Dec = +48d55'37".3)
The UCB group has revealed that it is also young SNe II
(vsnet-campaign-sn 451).
CH Cyg (RA = 19h24m33s.07, Dec = +50d14'29".5)
Reported observations imply that the fading has stopped
(vsnet-campaign-symbio 20).
VW CrB (RA = 16h00m03s.76, Dec = +33d11'14".4)
The superoutburst entered a rapid fading phase
(vsnet-campaign-dn 2634).
V4641 Sgr (RA = 18h19m21s.6, Dec = -25d24'25")
The light curve on June 30 obtained by Y. Sano shows the object
was relatively calm. The strong activity was confirmed in
time-series observations by K. Torii, K. Tanabe, R. Santallo,
and the Kyoto team on July 7 (vsnet-campaign-v4641sgr 112, 113, 115).
On July 7, the object experienced an unmistakable 1 mag short flare.
The 1 mag rise took only 30s, and the actual maximum may have been
even brighter. There were also multiple smaller flares (0.3 mag)
with typical durations less than 1 min (vsnet-campaign-v4641sgr 119,
121). G. Masi reported that the object was still bright on July 8
(vsnet-campaign-dn 2624, vsnet-campaign-v4641sgr 111). R. Santallo
detected some flares up to 10.5v mag with time-scales of seconds on
July 8 (vsnet-campaign-v4641sgr 114).
T. Scarmato reported second-order flares on July 9
(vsnet-campaign-v4641sgr 116, 117). V. Goranskij reported they
detected no flares between June 28 and July 8 (vsnet-campaign-v4641sgr
118). Time-series observations by B. Monard on July 8-9 show some
modulations, but no sharp flares (vsnet-campaign-v4641sgr 126).
The light curves on July 11 show the object entered a relatively calm
state, except for a ~0.15mag short flare detected by K. Torii
(vsnet-campaign-v4641sgr 125, 127, 141). Some flares were reported
on July 12 by T. Scarmoto (vsnet-campaign-v4641sgr 128, 137).
On the other hand, observations by T. Richards and G. Masi showed no
significant flare on June 12 (vsnet-campaign-v4641sgr 130, 131, 132,
138, 139). T. Scarmato reported second-order flares on July 13, and
commented that such short-duration flares may be overlooked with CCD
observations (vsnet-campaign-v4641sgr 142). On July 14, M. Linnolt
performed the 20-min long visual monitoring and reported possible
minor (+/-0.2mag) fluctuations and no dramatic activity was detected
(vsnet-campaign-v4641sgr 143, 145). The object is now in a relatively
calm state (vsnet-campaign-v4641sgr 124, 129, 140, 144).
DY Per (RA = 02h35m17s.12, Dec = +56d08'44".7)
The fading continues. The object is now at about 13.8-13.9mag
(vsnet-campaign-rcb 46).
V803 Cen (RA = 13h23m44.5s, Dec = -41d44'30".1)
The strong activity is still ongoing (vsnet-campaign-dn 2629, 2642).
BL Lac (RA = 22h02m42s.86, Dec = +42d16'37".6)
The activity between 13.9-14.9mag was reported during the
last week (vsnet-campaign-blazar 266, 267).
V2540 Oph (RA = 17h37m34s.36, Dec = -16d23'18".4)
The fading rate seems to be more rapid (vsnet-campaign-nova 941).
V2051 Oph (RA = 17h08m19.1s, Dec = -25d48m31.1s)
An outburst (14.0mag) was detected by R. Stubbings on July 12
(vsnet-campaign-dn 2635, vsnet-campaign-v2051oph 24).
V729 Sgr (RA = 19h16m49s.15, Dec = -26d14'33".2)
A fading from the outburst was reported on July 12
(vsnet-campaign-dn 2637).
V Sge (RA = 20h20m14s.75, Dec = +21d06'09".0)
The object is fading. It is now at about 11.5-11.6mag
(vsnet-campaign-nl 91).
ST Cha (RA = 10h47m31s.3, Dec = -79d27'17")
The object suddenly faded, which was confirmed by observations
by R. Stubbings on July. It may be a fading from a standstill
or a VY Scl-like fading (vsnet-campaign-dn 2636, vsnet-campaign-nl 90).
An outburst to 13.5mag was reported on July 14 (vsnet-campaign-dn
2641).
*** 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 ***
SDSSJ161332.56-000331.0
Chart and sequence presented:
http://joevp.20m.com/cgi-bin/i/charts/sloan/charts/sdss1613_sxn.gif
[vsnet-campaign-dn 2626]
V4641 Sgr
CCD images during a giant flare:
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Xray/v4641sgr02.html
[vsnet-campaign-v4641sgr 120]
Light curve provided by T. Scarmato:
http://vsnet.kusastro.kyoto-u.ac.jp/pub/vsnet/Xray/GM_Sgr/scarmato.jpg
[vsnet-campaign-v4641sgr 122, 123]
Multi-color phtotometry of the object and comp. stars by A. Henden.
see [vsnet-campaign-v4641sgr 133],
also see [vsnet-campaign-v4641sgr 134, 135]
CCD image by G. Masi:
http://vsnet.bellatrixobservatory.org/v4641sgrcomp.gif
[vsnet-campaign-v4641sgr 134]
Light curve obtained by G. Masi:
http://vsnet.bellatrixobservatory.org/v4641sgr.gif
[vsnet-campaign-v4641sgr 136]
V729 Sgr
Eclipse ephemeris, see [vsnet-campaign-dn 2628]
V2051 Oph
Eclipse ephemeris, see [vsnet-campaign-dn 2635,
vsnet-campaign-v2051oph 24]
(This summary can be cited.)
Regards,
Makoto Uemura
Return to Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
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