[vsnet-alert 11559] BC UMa: period decrease

Taichi Kato tkato at kusastro.kyoto-u.ac.jp
Thu Oct 15 11:02:53 JST 2009


BC UMa: period decrease

   Arto Oksanen and Maehara-san have reported further observations.
It has now become evident that the object experienced an episode
of period shortening (stage B-C transition) late on Oct. 9.
The mean superhump period since this transition has been 0.06428(1) d.
Further observations are encouraged.  There may be a rebrightening, too.


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