[vsnet-alert 6251] WZ Sge: superhump profile Aug. 9-10

[Taichi Kato <tkato>]

WZ Sge: superhump profile Aug. 9-10

Dear Colleagues,

   The analysis of the combined data between Aug. 9 and 10 (G. Masi,
B. Martin, Kyoto team) has yielded a remarkable superhump profile!

   The "secondary superhumps", as seen in Masi's light curve, became
even stronger hours later.  These two hump structures are of approximately
similar strength on Aug. 10.

   The phase-averaged light curve folded at the orbital period shows
a shallow (0.03 mag) fading at the predicted times.  However, this does
not seem to be directly related to the two humps above.

   Either of the main hump structures (more likely the secondary one) now
has a orbital phase close to what is expected for the main hump of early
superhumps.  It may be possible that the present unique profile is caused
by the somwhow enhanced early superhumps at this stage.

   Further analysis is in progress.  More observations are strongly
encouraged!

Regards,
Taichi Kato
VSNET Collaboration team

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