[vsnet-campaign-news 278] VSNET Weekly Campaign Summary
Makoto Uemura
uemuram at hiroshima-u.ac.jp
Mon Jun 20 19:58:26 JST 2005
VSNET Weekly Campaign Summary
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*** Headlines ***
New ASAS Nova! ----- V1663 Aql
New ASAS SU UMa star!, WZ Sge-type?? ----- ASAS 1600-48
*** Last week news ***
(new targets)
V1663 Aql (RA = 19h05m12s.50, Dec = +05d14'12".0)
= ASAS 190512+0514.2
= Nova Aql 2005
G. Pojmanski reported that the ASAS3V system detected a new object
(V=11.046, 9.240 June) (vsnet-alert 8440). A. Oksanen confirmed the
object at about V=10.84 on 10 June. His multicolor photometry
showed that the object was very red. This very red color was also
confirmed by K. Nakajima, which indicate that the object is highly
reddened (vsnet-alert 8443, 8448, 8452). Using USNOA2.0 stars,
A. Oksanen reported the above position for this new object
(vsnet-alert 8443).
M. Fujii has confirmed that the object is an FeII-class classical
nova based on a spectrum taken on 11.60 June (vsnet-alert 8447).
The nova is designated V1663 Aql.
R. Miles performed time-series photometry on 13 June, which shows
no significant variation in brightness greater than 0.010 mag
(vsnet-alert 8459).
ASAS 1600-48 (RA = 16h00m47s.43, Dec = -48d46'07".6)
G. Pojmanski reported that the ASAS3V system detected a new object
(V=12.567, 9.085 June) (vsnet-alert 8438). B. Monard confirmed the
object with Rc=12.55 and V=12.75 on 9 June. He performed astrometry
using UCAC2 stars, and reported the above position. The position
indicates a quiescent counterpart of b=17.9 and r=15.7 in USNO-A2.0.
He furthermore performed time-series photometry, which showed an
initial large hump in the light curve, which gradually was replaced
by smaller humps and a general fading trend (vsnet-alert 8441).
On 12 June, B. Monard reported the discovery of clear superhumps
with a period of around 0.075d (+/- 0.01). With this observation,
ASAS 1600-48 turned out to be a new SU UMa-type dwarf nova
(vsnet-alert 8450).
On 13 June, B. Monard reported a superhump period of 0.066d +/-
0.001d (vsnet-alert 8453). Using his data sets, M. Uemura reported
an average superhump period of 0.064899(4) d. The light curve on 9
June shows double-peak profile, implying "early humps" which
characterize WZ Sge stars. The object may be a WZ Sge-type star.
Time-series observations are recommended (vsnet-campaign 1575).
HS 2219+1824 (RA = 22h21m44s.79, Dec = +18d40'08".3)
P. Schmeer reported an outburst of this SU UMa-type dwarf nova
(11.6mag, 13 June). Rodriguez-Gil et al. reported an orbital period
of about 86.2 min, a superhump period of about 89.05 min (2004, A&A,
431, 269) (vsnet-alert 8455, 8456). The Kyoto team (Kubota et al.)
obtained time-series photometry on June 13. The object was still
rising at a rate of 0.45 mag/d. There is evidence of a growing
hump-like feature (sometimes with a double-wave profile)
(vsnet-alert 8458).
V422 Ara (RA = 16h59m18s.89, Dec = -61d43'30".0)
R. Stubbings reported an outburst of this object (14.7mag,
12.517 June). This object is listed as a non-cv in the Downes and
Shara catalogue (vsnet-alert 8451). On 14 June, B. Monard performed
Rc and V-band photometry, and found that the object is blue. He
furthermore reported that time-series photometry over just under 3h
showed a fading pattern with some small amplitude oscillations in
the light curve. He performed astrometry with UCAC2, and reported
the above position. He reported that V422 Ara can be identified
with the Southern part of a close N-S double (vsnet-alert 8462).
Optical transient in M31
(RA = 00h45m05s.28, Dec = +41d33'40".1)
According to ATEL #518, R. Quimby et al. discovered a transient in
M31 using unfiltered CCD images taken on June 15.38 UT (about 15.8
mag) and June 16.38 (about 16.6 mag) using the 0.45m ROTSE-IIIb
telescope at the McDonald Observatory. The transient is consistent
with a fast nova (vsnet-alert 8461).
NSV04838 (RA = 10h23m20s.18, Dec = +44d05'09".2)
According to CVNET messages, NSV04838 is most likely an SU UMa-type
dwarf nova presently in superoutburst. T. Vanmunster has reported a
period of 0.0697(4) d (vsnet-campaign 1574).
(old targets)
*** Future schedule ***
*** General information ***
Nova Aql 2005
ASAS3 page:
http://www.astrouw.edu.pl/cgi-asas/asas_disc/190512+0514.2,3524
[vsnet-alert 8440]
Spectrum taken by M. Fujii:
http://www1.harenet.ne.jp/~aikow/etc/p_n_aql_20050611.gif
[vsnet-alert 8447]
Chart provided by R. Bouma:
http://shopplaza.nl/astro/vs-charts/NAQL2005.png
http://shopplaza.nl/astro/vs-charts/NAQL2005_DSS.png
http://shopplaza.nl/astro/vs-charts/NAQL_DSS-R.png
[vsnet-alert 8457,8442,8445]
V- and I-band photometry on 13 June by R. Miles,
see [vsnet-alert 8460]
CCD image taken by K. Nakajima:
http://www.ztv.ne.jp/web/K.Nakajima/image/Nova%20Aql2005.htm
[vsnet-alert 8449]
ASAS 1600-48
ASAS3 page:
http://www.astrouw.edu.pl/cgi-asas/asas_disc/160048-4846.2,3525
[vsnet-alert 8438]
Optical transient in M31
Chart provided by R. Quimby et al. (ATEL #518):
http://grad40.as.utexas.edu/~quimby/tss/nova4.png
[vsnet-alert 8461]
INTERNATIONAL SCHOOL OF SPACE SCIENCE
2005 COURSE ON
GAMMA-RAY BURSTS: FROM ASTROPHYSICS TO COSMOLOGY
To be held at L'Aquila (Italy), Sept. 12-16, 2005
for more information, see www.cifs-isss.org
[vsnet-alert 8454]
V Sge campaign by K. Petrik stopped, see [vsnet-alert 8444]
(This summary can be cited.)
Regards,
Makoto Uemura
Hiroshima University
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