[vsnet-alert 9591] V455 And = HS2331+3905 superhumps and eclipses: complex profile

[Taichi Kato]

V455 And = HS2331+3905 superhumps and eclipses: complex profile

   The most recent data (only partially analyzed, more will be
summarized by Maehara-san later) show complex evolution of the
superhump light curve.  The mean superhump period since Sep 15
is 0.05695(1) d, 1.1% longer than the orbital period.
However, this period needs to be treated with caution because
of the strikingly variable superhump profile and possible period
evolution.

   On Sep 17, the superhump profile became doubly humped, the
initial peak being brighter.  The eclipses were also present
on the latter part of the fading branch from superhump maximum.
The "dip" between two peaks of superhumps corresponds to
phase 0.7 of primary eclipses.  More observations and analysis
are absolutely needed to clarify the nature of these highly
variable signatures.