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[vsnet-superoutburst 1910] BC UMa: superhump period increase

BC UMa: superhump period increase

Dear Colleagues,

   We further received new data from Jochen Pietz (2 nights) and David Boyd.
The object has been also intensively observed by the Kyoto team and Torii-san
(RIKEN).  The data up to now have confirmed the superhump period increase
at a rate of dot(P)/P = +4*10^(-5).  This finding confirms the suggested
period increase in a short-period system like BC UMa.  There also appeared
secondary superhumps on the declining branch of superhumps.

Regards,
Taichi Kato
VSNET Collaboration team

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