VW Crb : Long superoutburst in June
A superoutburst of the SU UMa-type dwarf nova VW CrB was detected
by M. Simonsen at 14.0mag on June 18
(vsnet-campaign-dn 919).
The Kyoto team performed time-series photometry on June 26, and
detected a superhump with an amplitude of 0.3mag
(vsnet-campaign-dn 943).
They furthermore reported the object is gradually declining with
~0.1mag/d
(vsnet-campaign-dn 960).
On July 4, the Kyoto team reported that the object remained its
brightness during July 1-3 and no prominent hump is detected
(vsnet-campaign-dn 965).
In the light curve in July 4 taken by the Kyoto team, double-peaked
humps were seen with an amplitude of 0.2mag. This may indicate regrowth
of superhumps
(vsnet-campaign-dn 970).
This outburst lasted for more than three weeks since June 18,
which is atypically longer for ordinal SU UMa-type dwarf novae
(vsnet-campaign-dn 971).
M. Uemura reported that combined data sets of the Kyoto team
show about 0.0725 d weak periodicity. The object was faded a little
faster on July 9
(vsnet-campaign-dn 973),
and then, finally entered a rapid decline phase on July 10
(vsnet-campaign-dn 975,
978).
The outburst lasts at least for 22 days
(vsnet-campaign-dn 983).
Other related articles:
vsnet-campaign-dn 923,
936,
941,
948,
954,
972