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CI UMa superoutburst: period analysis Dear Colleagues, The present superoutburst of CI UMa has been covered by Jochen Pietz, Okayama U. Sci. team (Tanabe-san) and VSNET Okayama Station, Hida observatory (Nogami-san) and Ouda station and Kyoto (Ishioka-san and Uemura-san). Although the analysis is still partial, we obtained a greatly refined superhump period of 0.06264(1) d. During the past 60 superhump cycles, the period change has been almost zero, which seems to make a contrast to generally positive Pdot in similar Psh systems with infrequent outbursts (e.g. V1028 Cyg, Psh = 0.06154 d, Pdot = +8.7x10^(-5), Baba et al. 2000 PASJ 52, 429). Further observations are strongly encouraged to completely follow the evolution of superhumps. Regards, Taichi Kato VSNET Collaboration team
Return to the Powerful Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
