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VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
SN 2003dm (RA = 11h31m38s.15, Dec = +25d34'14".3)
SN 2003dm is hosted by an anonymous galaxy which is hardly seen on
DSS images (vsnet-campaign-sn 605).
SN 2003dn (RA = 11h20m08s.03, Dec = +25d36'48".7)
SN 2003dn is hosted by an dim anonymous galaxy, also hardly
detected on DSS images (vsnet-campaign-sn 605).
SN 2003do (RA = 13h03m29s.37, Dec = +27d19'11".1)
SN 2003do is hosted by a dim (USNO-B1.0 rmag about 20) anonymous
galaxy. The SN is superimposed on the Coma cluster, in which a
typical SN Ia is expected to have a maximum magnitude of about 16.5
(vsnet-campaign-sn 605).
SN 2003dp (RA = 13h13m24s.23, Dec = +27d56'09".3)
SN 2003dp is hosted by a dim (USNO-B1.0 rmag = 19.5) anonymous
galaxy. This SN is also near (within 3 degree) to the center of
the Coma cluster (vsnet-campaign-sn 605).
SN 2003dq (RA = 11h04m45s.44, Dec = +15d26'49".4)
SN 2003dq is hosted by a dim (mag 19) spiral galaxy MAPS-NGP
O_432-0786358, which is an eastern component of a pair of galaxies
(vsnet-campaign-sn 605).
SN 2003dr (RA = 14h38m11s.13, Dec = +46d38'03".4)
SN 2003dr is hosted by NGC 5714, a nearby edge-on spiral galaxy.
The expected maximum of typical unreddened SN Ia is bright, mag
about 14.1 (vsnet-campaign-sn 605).
Var73 Dra (RA = 20h23m38s.193, Dec = +64h36m26s.91)
The Kyoto observation has confirmed that Var73 Dra, an unusual SU
UMa-type dwarf nova in the period gap, is undergoing a new
superoutburst (vsnet-campaign-dn 3590).
V2051 Oph (RA = 17h08m19.1s, Dec = -25d48m31.1s)
The outburst (14.5mag on April 13; 13.0mag on April 18, by
R. Stubbings) of the eclipsing SU UMa-type dwarf nova V2051 Oph
developed into a full superoutburst (vsnet-campaign-dn 3591,
vsnet-campaign-v2051oph 27). The light curve obtained by
B. Heathcote showed clear presence of eclipses with depths of 1.0
mag (vsnet-campaign-v2051oph 28). The light curves obtained by
P. Nelson and B. Heathcote on April 19 showed superhumps with
amplitudes of about 0.4 mag. The superhump profile was rich in
detailed substructures (vsnet-campaign-v2051oph 29). In the data
obtained by R. Santallo and P. Nelson on April 20, superhumps have
become even clearer, and the depths of eclipses became smaller
(0.5-0.7 mag) with rather complex detailed features
(vsnet-campaign-v2051oph 31). Combined with the earlier received
observations, it has been established that "some of the eclipses
show remarkable double minima profiles". The double minima of
eclipses indicate that there are two distinct sources on the
accretion disk -- implying that we can now resolve the superhump
light source (vsnet-campaign-v2051oph 32). The superoutburst is now
ongoing (vsnet-campaign-v2051oph 30).
IGR J17091-3624 (RA = 17h09m.1, Dec = -36d24'38")
According to ATEL #149, E. Kuulkers et al. reported the detection
of a new X-ray transient with INTEGRAL satellite, IGR J17091-3624.
The object is reported to have a 15-40 keV X-ray intensity of 40
mCrab on April 15-16 (vsnet-campaign-xray 226).
V383 Vel (RA = 10h21m41s.7, Dec = -49d49'24".33)
It is now in a relatively long outburst since April 17
(vsnet-campaign-dn 3593).
IGR J18539+0727 (RA = 18h53m.9, Dec = +07d27m)
According to ATEL #151, A. Lutovinov et al. report the discovery
with the INTEGRAL observatory of a new transient source IGR
J18539+0727. It seems that the source has a rather hard spectrum
and its detected flux is ~20 mCrab in both, 15-40 keV and 40-100 keV
energy bands on April 17-18 (vsnet-campaign-xray 228, 229).
(continuous targets)
CI UMa (RA = 10h18m13s.01, Dec = +71d55'42".8)
T. Kato reported a refined superhump period of 0.06264(1) d.
During the 60 superhump cycles, the period change was almost zero,
which seems to make a contrast to generally positive Pdot in similar
Psh systems with infrequent outbursts (vsnet-campaign-dn 3588). On
April 15, the superhump maxima was sometimes composed of two
separate peaks. On April 16, this feature apparently disappeared
(vsnet-campaign-dn 3589). The properties of the superhumps become
different since April 17. Before April 17, the period change was
almost zero, while the period seems to have made a sudden change
around April 17. Late superhumps, however, have not been apparent
even in the latest observation, indicating that the sudden change
was not associated with a phase 0.5 jump. CI UMa has entered a
rapid decline phase on April 19 (vsnet-campaign-dn 3592).
SN 2003dc (RA = 13h54m21s.70, Dec = +05d46'09".3)
The Las Campanas spectrum of SN 2003dc taken on Apr. 10.37
revealed that it was SN Ia near maximum. The redshift of the host
galaxy is derived as 0.067 (vsnet-campaign-sn 605).
V838 Mon (RA = 07h04m04s.816, Dec = -03d50'50".94)
A. Henden reported that the light echo is very gradually fading
and V838 Mon itself has held steady at V=16/Ic=10 for several months
(vsnet-campaign-nova 1211, vsnet-campaign-v838mon 418, 419, 420, 421).
SN 2003cx (RA = 13h57m06s.46, Dec = -17d02'22".6)
The Las Campanas spectrum of SN 2003cx taken on Apr. 10.39
revealed that it was a normal SN II two or three weeks after
explosion. The redshift of the host galaxy is 0.037
(vsnet-campaign-sn 605).
*** Future schedule ***
IAU JD17 "ATOMIC DATA FOR X-RAY ASTRONOMY"
ON JULY 22-23, 2003 at the XXVth IAU GENERAL ASSEMBLY
SYDNEY, AUSTRALIA, JULY 13-26, 2003
for more information:
http://vsnet.astronomy.ohio-state.edu/~pradhan/Iau/iau.html
[vsnet-campaign-xray 227]
"X-ray and Radio Emission of Young Stars"
July 28 - 29, 2003, Rikkyo University, Tokyo, Japan
for more information , please contact to kitamoto@rikkyo.ne.jp
[vsnet-campaign-xray 218]
Conference: THE INTERPLAY AMONG BLACK HOLES, STARS AND ISM IN
GALACTIC NUCLEI
in Gramado, south of Brasil, March 1-5, 2004
for more information, please contact to BHSIGN@if.ufrgs.br
[vsnet-campaign-agn 3]
eta Car: The next "shell event"/X-ray eclipse
M. Corcoran reported the event will occur this summer.
Coordinated ground-based observations of eta car along with the
X-ray observations would be really important.
For more information:
Latest X-ray light curve:
http://lheawww.gsfc.nasa.gov/users/corcoran/eta_car/etacar_rxte_lightcurve/
[vsnet-campaign-sdor 23, 24,
25, 26, 28, 29]
[vsnet-campaign-xray 172]
Light curve provided by S. Otero:
http://ar.geocities.com/varsao/Curva_Eta_Carinae.htm
[vsnet-campaign-sdor 22]
The 2003 Gamma Ray Burst conference
Hosted by Los Alamos,
in Santa Fe, New Mexico (USA), between September 8 and 12, 2003
http://grb2003.lanl.gov/
[vsnet-campaign-grb 13]
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]
[vsnet-campaign-sn 512]
*** General information ***
V2051 Oph
Eclipse epehemeris, see [vsnet-campaign-dn 2591], or
[vsnet-campaign-v2051oph 27]
Image by B. Heathcote:
http://vsnet.kusastro.kyoto-u.ac.jp/pub/vsnet/DNe/V2051_Oph/heath1.jpg
[vsnet-campaign-v2051oph 28]
VSNET page:
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/v2051oph0304.html
[vsnet-campaign-v2051oph 29]
Galileo Data
Paul Fieseler reported in vsnet-be 115 Galileo photometric data on
delta Sco (vsnet-campaign-be 228).
Nova discovery statistics: old record in 1993
see, [vsnet-campaign-nova 1212]
(This summary can be cited.)
Regards,
Makoto Uemura
Return to the Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
