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[vsnet-campaign-dn 3782] V803 Cen: oscillation continues



V803 Cen: oscillation continues

Dear Colleagues,

   We have received new data from Greg Bolt.  During the 6-hr observation,
V803 Cen initially faded, but reached a minimum around June 14.65 UT.
The amplitude of the continuing oscillation is slightly less than 1 mag.

   The maxima of the oscillations have been linearly fading at a mean
rate of 0.1 mag/d, which is on a smooth extension from the initial
superoutburst plateau.  The overall behavior (period and amplitude) of
the current oscillation stage is _stikingly similar_ to the "post-dip"
behavior of WZ Sge observed during its 2001 superoutburst.  The overall
bahevior since the start of the superoutburst resembles that of the
later half of the WZ Sge superoutburst (pre-dip to oscillation stage).
This analogy may suggest that the outburst of a helium dwarf nova
can be understood as an extension of the WZ Sge-type outbursts
(see also Osaki and Meyer 2003, A&A 401, 325 for the modern view of the
WZ Sge-type outbursts).

Regards,
Taichi Kato
VSNET Collaboration team


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