[vsnet-alert 10191] OT_J163120.9+103134 superhump period and change

Taichi Kato tkato at kusastro.kyoto-u.ac.jp
Fri May 16 10:30:06 JST 2008

OT_J163120.9+103134 superhump period and change

   In [vsnet-alert 10188], Ohshima-san apparently overlooked past
data submissions.  Using the data between May 7 and 14 (Nakajima-san,
Maehara-san, and Kyoto University), we have obtained a mean superhump
period of 0.06412(3) d.  We have also confirmed the strong period
increase during this phase, and the above error was mostly from
the systematic change in the period.

   Among SU UMa-type dwarf novae with similar periods, at least one
superoutburst of TV Crv (Uemura et al.) and another in BC UMa showed
similar incrase in the period.  Since ASAS-3 data suggest a relatively
short (~1 yr) supercycle, the object may be analogous to TV Crv.

   Further observations are strongly encouraged.

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