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[vsnet-campaign 583] VSNET Weekly Campaign Summary
VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
V383 Vel (RA = 10h21m41s.7, Dec = -49d49'24".33")
As reported by R. Stubbings on December 13, the new dwarf nova
V383 Vel = NSV04834 experienced an outburst at 13.1mag(vsnet-campaign 582).
Recent observations indicates the outburst was terminated on December 16
(vsnet-constel-vel 133).
CY UMa (RA = 10h56m57s.69, Dec = +49d41'09".1)
As reported by E. Muyllaert on December 14, the SU UMa-type dwarf nova
CY UMa is in outburst at 12.5mag. The interval suggests a superoutburst.
The last superoutburst was observed in 1999 Dec. - 2000 Jan
(vsnet-campaign-dn 311). M. Uemura and the Kyoto team performed a
time-series CCD observations at Kyoto on December 15 and reported
the magnitude of about 12.4 (vsnet-campaign-dn 316).
3C 66A (RA = 02h22m39s.6, Dec = +43d02'08")
The blazar 3C66A is bright, as indicated by observations showing the
magnitude of about 14.2mag on December 15 (vsnet-campaign-blazar 111).
(continuous targets)
VZ Pyx (RA = 08h59m20s.0, Dec = -24d28'56".1)
The superoutburst continues. The current magnitude seems to be fainter
than 13.2 (vsnet-campaign-dn 309, 314, vsnet-constel-pyx 83).
CT Hya (RA = 08h51m04s.50, Dec = +03d07'43".5)
L. Cook reported that S. Kiyota's data on December 4 shows 0.0673 d
periodicity (vsnet-campaign-data 51). He also reported that using
combined data on December 2 and 4, the period analysis shows the candidates
of 0.0664 day and 0.0688 day (vsnet-campaign-data 52).
V503 Cyg (RA = 20h27m15s.61, Dec = +43d41'45".5)
R. Ishioka and the Kyoto team reported another outburst on December 9
(vsnet-campaign-dn 303).
TY PsA (RA = 22h49m40s.31, Dec = -27d06'54".3)
The superoutburst continued until December 13 when A. Pearce reported
the magnitude of 12.8 indicating it entered a rapid decline phase
(vsnet-campaign-dn 304, 308, 315).
V803 Cen (RA = 13h23m44.5s, Dec = -41d44'30".1)
The object became fainter. The observation by B. Monard shows the
magnitude on December 15 was fainter than 13.9(vsnet-campaign-dn 313).
OY Car (RA = 10h06m22s.46, Dec = -70d14'04".4)
The rapid fading from the current outburst started around December 12
as reported by R. Stubbings and A. Pearce (vsnet-campaign 306, 310).
BL Lac (RA = 22h02m42.86s, Dec = +42d16'37.6")
The activity still continues. The magnitudes of 13.9-14.3 were reported
during the last week (vsnet-campaign-blazar 112).
XTE J1118+480 (RA = 11h18m10s.9, Dec = +48d02'12".9)
M. Garcia and his collaborators performed spectroscopic observations
of X-ray nova XTE J1118+480 with the new 6.5-m MMT on Dec. 1 & 4
and reported a velocity amplitude of 698 +/- 11 km/s and an orbital
period of 0.1701 +/- 0.0003 days, which give a mass function of
6.0 +/- 0.3 solar masses. The large value of the mass function is rivaled
only by that of V404 Cyg (vsnet-campaign-xray 58, 59).
*** Future schedule ***
TV Col campaign conducted by A. Retter (2001 January 2 - 15):
"Recently using previously published data, we discovered evidence for
another periodicity in the light curve of TV Col. The 6.4-h period would
be the longest recorded positive superhump. To confirm this period, I'll
carry out continuous photometry on TV Col during two weeks in January
(2-15) using the 0.75-m reflector with the UCT CCD in Sutherland, South
Africa.
I am calling for a campaign on TV Col during these nights. As the
candidate periodicity is relatively long, multi-longitude continuous
monitoring of the object is extremely important to reduce the aliasing
problem. So, if you can observe the object for at least ~4 h (preferably
more than one 6.4-h cycle), please let me know."
for more information, see [vsnet-campaign 579],[vsnet-campaign-ip 15]
*** General information ***
OY Car
eclipse ephemeris, see [vsnet-campaign-dn 305].
(This summary is reproduction free.)
Regards,
Makoto Uemura
vsnet-adm@kusastro.kyoto-u.ac.jp
Return to Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
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