[vsnet-alert 9650] 1RXS J023238.8-371812 superhumps update

[Taichi Kato]

1RXS J023238.8-371812 superhumps

   We have received further data from Peter Nelson, Greg Bolt and
Kiyota-san.  The object still shows regular superhumps, even 20 days
after the initial peak.  The strong presence of superhumps and
decreasing amplitude seems to suggest that the object is now
experiencing a true plateau phase (corresponding to a that of a usual
SU UMa-type dwarf nova) following a short WZ Sge-type "dip".
The duration before the dip was 14 d.  If this phase was dominated
by early superhumps (presumably from 1:2 resonance), this duration
is astonishingly long for a dwarf nova with this orbital period.

   The refined mean superhump period is 0.066192(7) d.  There is
no indication of systematic evolution in the period.