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VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
4U 1630-47 (RA = 16h34m00s.4, Dec = -47d23'23")
According to ATEL #161, the black hole candidate X-ray transient
4U 1630-47 is undergoing an extended X-ray outburst (duration
nearly 260 d). There have been occasions of increased X-ray
activities recently (vsnet-campaign-xray 241).
MM Sco (RA = 17h30m45s.68, Dec = -42d11'09".2)
As reported by R. Stubbings on May 26, the SU UMa-type dwarf nova
MM Sco experienced an outburst (14.0-13.9mag) (vsnet-campaign-dn
3692). In the light curve obtained by B. Heathcote, the object was
fading at a rate of 0.5 mag/d on May 27. There was an indication of
0.05 mag variations, which may be either related to orbital or
superhump-type modulation. Although the observation does not
exclude the possibility of the early stage of a superoutburst, the
fainter magnitude than in the past superoutbursts makes it more
likely a normal outburst (vsnet-campaign-dn 3698, 3701, 3707, 3712).
V589 Her (RA = 16h22m07s.19, Dec = +19d22'36".3)
An outburst of the SU UMa-type dwarf nova V589 Her was reported on
May 27, but it was not confirmed by the observations by the Kyoto
team (vsnet-campaign-dn 3694, 3697). It was fainter than 16.2mag on
May 27, as reported by O. Trondal (vsnet-campaign-dn 3705).
SN 2003em (RA = 02h09m20s.23, Dec = -23d24'53".0)
SN 2003em is hosted by ESO 478-G6, an inclined spiral galaxy. It
is superimposed on the outer arm region. The expected maximum for
typical SN Ia is mag about 16.0 (vsnet-campaign-sn 628).
RS Oph (RA = 17h50m13s.56, Dec = -06d42'30".6)
RS Oph has been reported to be slightly brighter than normal. It
may be a sign of a new outburst (vsnet-campaign-nova 1261, 1264,
1265, 1274).
V1362 Cyg (RA = 20h03m41s.6, Dec = +36d25'32")
A brightening of V1362 Cyg was reported on May 29, but it has not
been confirmed (vsnet-campaign-be 240, 241, 242, vsnet-campaign-sdor
42, 43, 44).
V2335 Oph (RA = 18h04m17s.3, Dec = +04d43'44")
T. Kato reported, according to ASAS-3 CV alert, V2335 Oph may be
in outburst (mag 14.4). K. Torii, however, reported that it is not
in outburst. The ASAS-3 detection may have been a noise
(vsnet-campaign-dn 3714, 3718).
V405 Vul (RA = 19h53m05s.0, Dec = +21d14'50")
T. Kato reported, according to ASAS-3 CV alert, V405 Vul may be in
outburst (mag 13.8). K. Torii, however, reported that it is not in
outburst. The ASAS-3 detection may have been a noise
(vsnet-campaign-dn 3715, 3719).
SDSS J132723.39+652854.2
(RA = 13h27m23s.39, Dec = +65d28'54".2)
According to astro-ph/0305607 (Wolfe et al.), the SDSS cataclysmic
variable SDSS J132723.39+652854.2 is found to be an eclipsing
novalike system with a period of 3.28 hr. The object is suggested
to be an SW Sex type object. The magnitude is about 18
(vsnet-campaign-nl 121).
(continuous targets)
V660 Her (RA = 17h42m07s.3, Dec = +23d47'37".3)
The outburst faded (vsnet-campaign-dn 3703).
rho Cas (RA = 23h54m22s.99, Dec = +57d29'58".7)
In the spectrum taken by M. Fujii, the H-alpha line was seen in
absorption, but may be partly filled with an emission-line component
(vsnet-campaign-rhocas 17).
PU CMa (RA = 06h40m47s.67, Dec = -24d23'14".6)
In the light curves on May 26-27 taken by B. Monard and on May 25
by P. Nelson, the object clearly showed superhumps. These
observations finally (most probably) confirmed the SU UMa-type nature
of PU CMa (vsnet-campaign-dn 3695). The superhump period was
calculated to be 0.05789(2) d using all data sets reported upto May
29. This period is 2.1% longer than the orbital period
(vsnet-campaign-dn 3696, 3704, 3706, 3708). T. Kato reported a
superhump period derivative to be dot(P)/P = -3x10^(-5). Excluding
the slight anomaly of O-C on May 25 has yielded -1x10^(-5). In
either cases, the absolute value of dot(P)/P is small. Furthermore,
the period derivative seems to be slightly negative (period is
decreasing), which is a rather anomalous feature for a system with
this short superhump period (vsnet-campaign-dn 3711, 3713). The
star entered the rapid decline phase on May 30, and faded by 2 mag
on May 31. However, the superhumps (late superhumps?) still
prominently persist even on June 1 in the light curve taken by
B. Monard (vsnet-campaign-dn 3693, 3700, 3709, 3717, 3720).
delta Sco (RA = 16h00m19s.9, Dec = -22d37'17")
The object is gradually fading from the recent very bright state
(vsnet-campaign-be 238). In the spectrum taken by M. Fujii, the
Balmer lines are still in emission (vsnet-campaign-be 239).
V729 Sgr (RA = 19h16m49s.15, Dec = -26d14'33".2)
The object faded from the recent outburst (vsnet-campaign-dn 3716).
CR Boo (RA = 13h48m55s.42, Dec = +07d57'30".3)
A new outburst started on May 24 (vsnet-campaign-dn 3702).
OU Vir (RA = 14h35m00s.14, Dec = -00d46'07".0)
The Kyoto team detected a possible, post-superoutburst
rebrightening on May 29 (vsnet-campaign-dn 3710).
V4745 Sgr (RA = 18h40m02s.54, Dec = -33d26'55".1)
The nova experienced a new bright maximum around May 29
(vsnet-campaign-nova 1260, 1262). In the spectrum taken by
M. Fujii, the Fe II lines still persist, indicating the slow
evolution. The [O I] line at 8446 A has become slightly stronger
(vsnet-campaign-nova 1263).
MV Lyr (RA = 19h07m15s.93, Dec = +44d01'10".7)
The recent time-series observations confirm the presence of
large-amplitude (0.1-0.2 mag) strong spike-like quasi-periodic
features (typical time-scales 10-30 min), which remind us of V592
Cas, RX J1643.7+3402. It may be possible that this signal became
stronger as the system brightened to the current exceptional level.
There may be a undelying superhump signal, which needs to be
verified by further analysis and observations (vsnet-campaign-nl 122).
eta Car (RA = 10h45m03s.65, Dec = -59d41'03".7)
Recent reported observations can be seen in [vsnet-campaign-sdor
40, 41].
EE Cep (RA = 22h09m22s.8, Dec = +55d45'24")
The object is now in an eclipse (vsnet-campaign-ecl 77).
V504 Cen (RA = 14h12m49s.11, Dec = -40d21'37".1)
T. Kato reported that the object is a new, firmly established VY
Scl-type star. The rare brightness (mag about 13) makes it a very
ideal target for southern time-series observations
(vsnet-campaign-nl 123).
*** Future schedule ***
Multiwavelength AGN Surveys
a "Guillermo Haro" Astrophysics Conference
organized by INAOE
December 8-12, 2003
Cozumel, Mexico
http://vsnet.inaoep.mx/~agn2003/
[vsnet-campaign-agn 4]
IM Nor Campaign
by I. Hachisu (University of Tokyo) and the VSNET team
For more information, see [vsnet-campaign-nova 1241]
GRB Mini-Symposium in JENAM2003
For more information, http://vsnet.konkoly.hu/jenam03/
[vsnet-campaign-grb 31]
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, 32, 33]
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]
*** General information ***
PU CMa
VSNET page:
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/pucma.html
[vsnet-campaign-dn 3699]
Image by P. Nelson:
http://vsnet.kusastro.kyoto-u.ac.jp/pub/vsnet/DNe/PU_CMa/nel1.jpg
[vsnet-campaign-dn 3706]
rho Cas
Spectrum taken by M. Fujii:
http://vsnet1.harenet.ne.jp/~aikow/rho_cas_20030528.gif
[vsnet-campaign-rhocas 17]
delta Sco
Spectrum taken by M. Fujii:
http://vsnet1.harenet.ne.jp/~aikow/delt_sco_20030528.gif
[vsnet-campaign-be 239]
V4745 Sgr
Spectrum taken by M. Fujii:
http://vsnet1.harenet.ne.jp/~aikow/v4745_sgr_20030528.gif
[vsnet-campaign-nova 1263]
Discussion about RS Oph, its neighbor comparison star, and recurrent
novae, see [vsnet-campaign-nova 1266, 1267, 1268, 1269, 1270,
1271, 1272, 1273]
MV Lyr
Article for the Czech publication Perseus in 1999 written by
L. Cook:
http://vsnet.geocities.com/lcoo/mvly1999.htm
[vsnet-campaign-nl 124]
(This summary can be cited.)
Regards,
Makoto Uemura
Return to the Powerful Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
