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[vsolj-alert 963] VSNET Weekly Campaign Summary
- Date: Tue, 27 Nov 2001 18:10:53 +0900 (JST)
- To: vsolj-alert@ooruri.kusastro.kyoto-u.ac.jp
- From: Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>
- Subject: [vsolj-alert 963] VSNET Weekly Campaign Summary
- Sender: owner-vsolj-alert@ooruri.kusastro.kyoto-u.ac.jp
From owner-vsnet-campaign@kusastro.kyoto-u.ac.jp Tue Nov 27 06:21 JST 2001
To: vsnet-campaign
Date: Tue, 27 Nov 2001 06:21:18 +0900
From: Makoto Uemura <uemura@kusastro.kyoto-u.ac.jp>
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Subject: [vsnet-campaign 1233] VSNET Weekly Campaign Summary
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VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
GY Cnc (RA = 09h09m50s.5, Dec = +18d49'47")
J. Gunther and E. Morillon reported an outburst (12.0mag) of the
deeply eclipsing SS Cyg-type dwarf nova GY Cnc = RX J0909.8+1849
= HS 0907+1902 on November 23 (vsnet-campaign 1230). The Kyoto
team performed time-series photometry of eclipses on November 24
(vsnet-campaign-dn 1946). The eclipse minimum they detected was
observed on 24.6553 UT, about 8 min later than the prediction.
The depth was 1.6 mag (vsnet-campaign-dn 1947). The outburst is
still ongoing (vsnet-campaign-dn 1952).
KS UMa (RA = 10h20m26s.54, Dec = +53d04'33".5)
The SU UMa-type dwarf nova, KS UMa = SBS1017+533 is in outburst
as reported to be 14.0mag by M. Simonsen on November 21
(vsnet-campaign-dn 1926).
AQ Eri (RA = 05h06m12s.99, Dec = -04d08'01".6)
M. Simonsen detected and reported an outburst of AQ Eri at 14.0mag
on November 22 (vsnet-campaign-dn 1929). The observation by the
Kyoto team showed that the object was rapidly fading, indicating that
the outburst was a normal one (vsnet-campaign-dn 1930, 1944, 1950).
The brightness was still above quiescence on November 25
(vsnet-campaign-dn 1951).
BZ Cam (RA = 06h29m34s.49, Dec = +71d04'39".5)
H. Itoh reports that VY Scl-type star BZ Cam has faded to 13.1mag.
T. Kato commented that if this indeed is an excursion to a low state,
this star seems to be quite active in recent years.
SN 2001gb (RA = 09h59m00s.96, Dec = +17d49'12".4)
The LOTOSS team discovered SN 2001gb in the image taken on
November 20. The host galaxy of SN 2001gb = IC 582 (spiral) makes
a pair with IC 583. It superimposes on the outermost region of
the peculiar-shaped disk. The expected maximum for typical SN Ia
is mag about 16.7. The object was 16.8mag when discovered
(vsnet-campaign-sn 282).
SN 2001gc (RA = 05h55m26s.14, Dec = +51d54'34".2 )
The LOTOSS team discovered SN 2001gc in the image taken on
November 21. SN 2001gc locates about 9" east-southeast of the
nucleus of the host galaxy = UGC 3375 (SA(rs)c), superimposed on
the inner part of the disk. The expected maximum for typical
SN Ia is mag about 16.1. The object was reported to be 18.2mag
on November 18.2 and 16.2mag when it was discovered
(vsnet-campaign-sn 282).
GX Cas (RA = 00h49m01s.46, Dec = +56d52'44".8)
The long-period SU UMa-type dwarf nova, GX Cas, is in outburst
as reported by H. Itoh on November 23. The last superoutburst was
in 2001 June-July. The present outburst, however, may be brighter
than some of past superoutbursts (13.5mag; vsnet-campaign-dn 1942).
J. Ripero reported 13.9mag on November 24 (vsnet-campaign-dn 1949).
(continuous targets)
DM Dra (RA = 15h34m12s.13, Dec = +59d48'31".9)
The superoutburs continued until November 23 when the Kyoto
team detected the fading from the outburst (vsnet-campaign-dn 1919,
vsnet-campaign-dn 1922, 1928, 1932, 1939). The Kyoto team
observations on November 14 and 19 yielded the revised superhump
period of 0.07572(4) d (vsnet-campaign-dn 1925). Superhumps became
less apparent on Nov. 21-22, which is in agreement with our previous
finding during the late stage of the 2000 October superoutburst
(vsnet-campaign-dn 1948).
SN 2001fz (RA = 06h44m50s.26, Dec = -27d37'12".7)
The CfA team has revealed that it is of type II (IAUC 7759).
H. Yamaoka reported that the recent magnitude estimates shows that
it has not become brighter than it was at discovery (unfiltered CCD
mag about 17.0) (vsnet-campaign-sn 283).
TK5 (RA = 19h17m26s.5, Dec = +37d10'41")
A possible fading from the outburst was reported on November 19
(vsnet-campaign-dn 1923).
EY Cyg (RA = 19h54m36s.77, Dec = +32d21'54".7)
The long outburst entered a rapid fading phase around November
19 (vsnet-campaign-dn 1920, 1933, 1945).
TV Col (RA = 05h29m25s.5, Dec = -32d49'05".2)
The observations reported by B. Monard have recently show no
major outburst, but the object is still active (vsnet-campaign-ip 66)
CC Cnc (RA = 08h36m19s.17, Dec = +21d21'05".4)
The Kyoto data showed that CC Cnc has undergone a dramatic
decline between Nov. 21 and 22 (vsnet-campaign-dn 1931), which
was confirmed by visual observations (vsnet-campaign-dn 1934).
AK Cnc (RA = 08h55m21s.21, Dec = +11d18'14".7)
The probable superoutburst continues. M. Simonsen reported the
object was 14.6mag on November 21 (vsnet-campaign-dn 1918, 1927).
KR Aur (RA = 06h15m45s.05, Dec = +28d34'16".0)
The bright state continues (vsnet-campaign-nl 53).
1RXS J232953.9+062814 (RA = 23h29m54s.30, Dec = +06d28'10".9)
After the re-breightening, the object experienced gradual declining
like as WZ Sge stars. The light curve was dominated by double-wave
humps, with occasional brightenings (time scale ~1-2 hr), during which
humps tend to become rather unclear (vsnet-campaign-dn 1921).
The later light curve on November 19 - 21 shows two periodicity
of 0.044590(16) d and 0.045935(67) d. The former probably
corresponds to orbital periods, and the latter is superhumps
(vsnet-campaign-dn 1935).
WZ Sge (RA = 20h07m36s.53, Dec = +17d42'15".3)
The gradual fading still continues (vsnet-campaign-dn 1917, 1936).
I. Andronov et al. reported that they detected superhump signals
in the light curve on July 25 2001, the very early phase of the last
outburst (vsnet-campaign 1231, 1232).
IX Dra (RA = 18h12m32s.2, Dec = +67d04'41")
The superoutburst continues (vsnet-campaign-dn 1916, 1924, 1937).
V1039 Cen (RA = 13h55m41s.27, Dec = -64d15'57".9)
= Nova Cen 2001
The nova has been given the above GCVS designation in IAUC No. 7756.
The nova was shown to be in nebular phase according to spectroscopy
by Della Valle et al. on November 12 (vsnet-campaign-nova 655).
The object rebrightened and experienced the third maximum reaching
11.8mag on November 22 (vsnet-campaign-nova 656).
V1548 Aql (RA = 19h07m28s.42, Dec = +11d44'45".8)
The object again brighened with large fluctuations. As reported
by M. Watanabe, the brightness reached V=13.15mag on November 20
(vsnet-campaign-nova 657).
MV Lyr (RA = 19h07m15s.93, Dec = +44d01'10".7)
The object is gradally fading from the bright state of about
13.4mag (vsnet-campaign-nl 54).
SU UMa (RA = 08h12m28s.20, Dec = +62d36'22".6)
The last normal outburst seems to trigger a superoutburst
(vsnet-campaign-dn 1938, 1943).
*** Future schedule ***
V1494 Aql: Chandra X-ray observation
08:12 November 28, 2001 03172 8.0 CALIBRATIO PKS2155-304
10:53 November 28, 2001 02681 25.3 STARRFIELD V1494 AQL
11:09 November 29, 2001 03412 20.0 HARRISON FXRT011030
Simultaneous observations are encouraged (vsnet-campaign-nova 658).
also, see [vsnet-campaign-nova 659]
WZ Sge campaign
D. Steeghs wrote:
"Several of us are organizing a campaign on the current outburst
of WZ Sge, using a large variety of ground based facilities as well as
space observatories. A web-page has been setup listing the scheduled
observations so far which we intend to keep up to date at:
http://vsnet.astro.soton.ac.uk/~ds/wzsge.html
"
For more information, see [vsnet-campaign 1039]
Supernova campaign: A great opportunity for amateurs by M. Schwartz.
For more detailed information, see [vsnet-campaign-sn 233]
announce on the HST observations, see [vsnet-campaign-sn 240, 246]
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]
Blazar meeting at Tuorla: June 17-21, 2002
for more information, see http://vsnet.astro.utu.fi/blazar02
[vsnet-campaign-blazar 232]
*** General information ***
GY Cnc
Eclipse ephemeris, see [vsnet-campaign-dn 1940]
also see, http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/j0909.html
[vsnet-campaign-dn 1941]
DM Dra
superhump light curve:
http://ftp.kusastro.kyoto-u.ac.jp/pub/vsnet/DNe/DM_Dra/dmsh.gif
[vsnet-campaign-dn 1948]
Corrigendum in the last Campaign Summary:
> SN 2001fv (RA = 11h04m01s.66, Dec = +28d01'55".7)
>
> The CfA team revealed that SN 2001fv is of type Ia few weeks
^^^^^^^^
type II
(This summary can be cited.)
Regards,
Makoto Uemura
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