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BC UMa: superhump period change Dear Colleagues, We have received further extensive data from Nakajima-san and David Boyd, and regular additions from Torii-san (RIKEN) and Kyoto observations. The resultant analysis seems to show emerging evidence of a superhump period growth. Disregarding the initial stages of early superhumps? and genuine superhump growth, the period derivative has been determined to be dot(P)/P ~ 8*10^5. We hope we will soon be able to refine the value with the progress of the ongoing analysis. The present outburst is becming the best observed superoutburst of BC UMa in the history; further nightly observations are very strongly encouraged. Regards, Taichi Kato VSNET Collaboration team
Return to the Powerful Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
