[vsnet-alert 6598] WZ Sge: time-series analysis of the Sep. 9 data

[Taichi Kato <tkato>]

WZ Sge: time-series analysis of the Sep. 9 data

Dear Colleagues,

   We have analyzed the rising portion of the 11-th rebrightening.
The main hump is located at phase 0.3-0.4, and not at 0.8-0.9, seen in
the rising stage of some of past rebrightenings.  This would imply
either the main hump is moving in phase (i.e. superhumps) or the 0.8-0.9
phase pre-eclipse humps have become weaker.  In the former case, it may
be possible superhumps may be somehow (physically or geometrically)
enhanced when they occur at pre-eclipse phases.  As reported earlier,
eclipses are not evident on Sep. 9 observations.  This may have been
an effect of superposition of eclipses with some of hump structures.

   Further observations are strongly encouraged to discern the possibilities,
and to record the expected fade of the 11-th rebrightening.  The system
is expected to undergo a next rebrightening within 1.5 d, if the present
activity continues.

Regards,
Taichi Kato
VSNET Collaboration team

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