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[vsnet-campaign 1335] VSNET Weekly Campaign Summary
VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
A possible nova in M31
K. Hornoch reported a possible nova in M31, which faded from
R=17.0 on August 4 to 18.7mag on September 2 (vsnet-campaign-nova
966, 967, 968). The object was suspected to be a slow variable, not
a nova (vsnet-campaign-nova 969, 970, 972), however M. Fiaschi
reported a bright H_alpha mag of about 16.0, which supports a nova
or an emission line variable star (vsnet-campaign-nova 973).
V368 Peg (RA = 22h58m43s.5, Dec = +11d09'13")
As reported by M. Simonsen on September 6, the SU UMa-type dwarf
nova V368 Peg is in outburst (13.0mag). The last superoutburst
was recorded in 2000 August-Septermber (vsnet-campaign-dn 2801).
FN Sgr (RA = 18h53m54s.79, Dec = -18d59'40".8)
P. Williams reported that the ZAND type star FN Sgr continues
to remain in a faint state (13.2-13.8mag) during the current
observing season (vsnet-campaign-symbio 27, 28).
SN 2002ez (RA = 22h00m20s.93, Dec = -14d00'22".5)
SN 2002ez was discovered by W. M. Wood-Vasey et al. on NEAT images
on July 23 at 17.6mag. The host galaxy of SN 2002ez is 2MASXi
J220205-135958, apparently a distant barred-spiral galaxy. Reported
offset was 4"E, 18" S, but if the reported position is correct, the
offset toward south is as larger as 23" (vsnet-campaign-sn 472).
SN 2002fa (RA = 20h52m21s.78, Dec = +02d08'41".9)
SN 2002fa was discovered by W. M. Wood-Vasey et al. on NEAT images
on August 24 at 19.4mag. The host galaxy of SN 2002fa is an
anonymous distant spiral galaxy (vsnet-campaign-sn 472).
SN 2002fb (RA = 01h57m48s.90, Dec = +36d20'26".3)
SN 2002fb was discovered by LOTOSS on KAIT images on September 6
at 17.1:mag. NGC 759, the host galaxy of SN 2002fb, is a elliptical
galaxy. The CfA team has revealed that it is of type Ia near the
maximum light on Sept. 7.5 UT, which is coincident to what is
expected from the morphology of the host galaxy. They say that it
is possibly peculiar SN Ia, resembling a subluminous SN Ia 1991bg.
The expected maximum of typical SN Ia is mag about 15.9, which is
brighter than the reported value, then the subluminous nature is
also supported (vsnet-campaign-sn 472).
GSC 2679.1458 (RA = 20h11m 8s.18, Dec =+34d37'30".4)
M. Martignoni proposed that GSC 2679.1458 in the same field of the
variable V1823 Cyg seems to be variable. T. Kato commented that
this new variable is an emission-line star (vsnet-campaign-unknown
98). S. Yoshida commented that it may be the same type as MisV1147,
another variable star identified with a HBHA object
(vsnet-campaign-unknown 100). D. West reported B=14.04, V=13.12,
and Rc=12.52 on September 7 (vsnet-campaign-unknown 102).
MM Sco (RA = 17h30m45s.68, Dec = -42d11'09".2)
R. Stubbings detected a relatively rare outburst (14.0mag) of MM
Sco on September 5 (vsnet-campaign-dn 2816).
V601 Sco (RA = 17h04m05s.28, Dec = -36d43'34".1)
An outburst to 14.7mag was reported on September 7
(vsnet-campaign-dn 2804, 2817), but no eruption was confirmed.
It is likely the neighbor red star has been visually detected
(vsnet-alert 7467).
(continuous targets)
NSV 10934 (RA = 18h40m52s.26, Dec = -83d43'10".24)
An outburst to 12.9mag was detected by R. Stubbings on September 4
(vsnet-campaign-dn 2799, 2803). The outburst quickly faded within
two days, as observed in previous outbursts (vsnet-campaign-dn 2808).
AB Nor (RA = 15h49m16s, Dec = -43d04'51")
Using data sets obtained by B. Monard, T. Kato reported that
superhumps had an amplitude of 0.2mag and a period of 0.0820(2) d
(vsnet-campaign-dn 2790). On Sep. 4, the light curve obtained by
P. Nelson shows superhumps fully developed (amplitude near 0.3 mag)
with a characteristic triangluar profile (vsnet-campaign-dn 2800).
The superoutburst is still ongoing (vsnet-campaign-dn 2794,2797,2798).
Z Cha (RA = 08h07m16s.29, Dec = -76d32'20".9)
An outburst was detected on September 3 by R. Stubbings. The
reported magnitude (12.8mag) indicates it is a normal outburst
(vsnet-campaign-dn 2795).
KV Dra (RA = 14h50m38.4s, Dec = +64d03m29s)
D. Nogami reported a superhump period of 0.0596(+-0.0008) d, same
as that reported in Nogami et al. (2000, A&A, 364, 701) within the
error (vsnet-campaign-dn 2787). Using data sets obtained by the
VSNET Collaboration team, M. Uemura reported that the superhump
period was slightly shorter than the previous one during the very
early phase of superoutburst (0.059948(27) d in [vsnet-campaign-dn
2792], 0.059916(20) d in [vsnet-campaign-dn 2796]). Then the
superhump period started increasing from September 5 (0.060005(17) d in
[vsnet-campaign-dn 2802], 0.060121(25) d in [vsnet-campaign-dn
2814]). The object faded at a rate of 0.2 mag/d until September 3
when the fading rate became more gradual (vsnet-campaign-dn 2802).
The superhump amplitudes also decreased to 0.1mag at that time
(vsnet-campaign-dn 2805). After the fading rate recovered, it again
experience a gradual fading, or slightly brightening on September 8.
Although the duration of the superoutburst was only about one week
at that time, the more gradual fading trend may imply a final phase
of the superoutburst (vsnet-campaign-dn 2820). The superoutburst is
still ongoing (vsnet-campaign-dn 2788, 2789, 2791, 2807, 2815).
TV Col (RA = 05h29m25s.5, Dec = -32d49'05".2)
The object quickly faded from the last outburst (vsnet-campaign-ip
94). The light curve observed by B. Monard one day after the outburst
shows a remarkable 0.15 mag dip-like fading, which may be related to
an eclipse (vsnet-campaign-ip 93).
delta Sco (RA = 16h00m19s.9, Dec = -22d37'17")
The object was reported to be still bright at 1.8mag
(vsnet-campaign-be 200).
V2540 Oph (RA = 17h37m34s.36, Dec = -16d23'18".4)
D. West reported some V and Rc observations in
[vsnet-campaign-nova 971], which show that the object slowly
continues to fade and become "redder".
SN 2002em
It is of type II, probably type IIn (vsnet-campaign-sn 471).
SN 2002en
The UCB team has revealed that it is SN II (vsnet-campaign-sn 471).
SN 2002eo (RA = 01h52m55s.18, Dec = +36d03'22".2)
The Asiago team and the UCB team report that it is type II SN
(vsnet-campaign-sn 471).
SN 2002ep (RA = 21h57m21s.66, Dec = -07d51'24".8)
It is type Ia SN, about a month past maximum on Sept. 3
(vsnet-campaign-sn 471).
SN 2002es (RA = 03h23m47s.23, Dec = +40d33'53".5)
The Cfa team and the UCB team revealed that it is a peculiar
(subluminous) type Ia SN near maximum on Sept. 3 (vsnet-campaign-sn
470, 471).
MisV1147 (RA = 22h54m03s.78, Dec = +58d54'02".1)
The object is quickly recovering from the deep minimum
(vsnet-campaign-unknown 99).
BF Ara (RA = 17h38m10s.40, Dec = -47d10'43".4)
A new outburst to 15.0mag was reported by R. Stubbings on
September 7. t_n = 6 d is the shortest cycle length among SU UMa
stars, except ER UMa stars (vsnet-campaign-dn 2810).
V803 Cen (RA = 13h23m44.5s, Dec = -41d44'30".1)
The object brightened again (13.3mag) on September 7
(vsnet-campaign-dn 2811).
CH Cyg (RA = 19h24m33s.07, Dec = +50d14'29".5)
The object becomes fainter. Observations of 8.3-8.9 were reported
during the last week (vsnet-campaign-symbio 29).
BX Mon (RA = 07h25m22s.7, Dec = -03d35'50")
The object still remains at the bright state of 9.5-9.6mag
(vsnet-campaign-symbio 30).
SN 2002eu (RA = 01h49m43s.60, Dec = +32d37'43".0)
The Cfa team revealed that it is type Ia SN several days after
maximum on Sept. 3 UT. The recession velocity is roughly estimated
to be about 10000 km/s (vsnet-campaign-sn 470). The UCB team says
that the Si II 580-nm feature suggest that it would be subluminous,
but Ti II 420-nm absorption which is typical for subluminous SN Ia
is absent (vsnet-campaign-sn 471).
*** Future schedule ***
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 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 264]
[vsnet-campaign-blazar 265]
[vsnet-campaign-grb 7]
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]
[vsnet-campaign-sn 452]
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 ***
KV Dra
Time-series observations by G. Billings:
http://vsnet.telusplanet.net/public/obs681/KVDrn901.txt
http://vsnet.telusplanet.net/public/obs681/KVDrn901.png
[vsnet-campaign-data 102]
Light curve by the Nyrola team:
http://nyrola.jklsirius.fi/ccd/2002/data0903/KVDra20020903.jpg
[vsnet-campaign-dn 2793]
http://nyrola.jklsirius.fi/ccd/2002/data0906/KVDra20020906.jpg
[vsnet-campaign-dn 2805]
Z Cha
Eclipse ephemeris, see [vsnet-campaign-dn 2795]
V838 Mon
Ic band image taken by D. West:
http://hometown.aol.com/dwest61506/page18.html
[vsnet-campaign-v838mon 381]
Recent observations, see [vsnet-campaign-v838mon 382]
GSC 2679:1458
Chart presented by D. West:
http://hometown.aol.com/dwest61506/page19.html
[vsnet-campaign-unknown 103]
(This summary can be cited.)
Regards,
Makoto Uemura
Return to Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
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