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V585 Lyr: continued humps? rare outburst of a long-period system? Dear Colleagues, The VSNET Collaboration has further received data from Jochen Pietz. The Kyoto team (observers: R. Ishioka and M. Uemura) and Torii-san (RIKEN) also took the data, part of which has been analyzed. The data seem to show the continued presence of ~0.1 mag humps. The comment by Jochen Pietz follows: > Faded by 0.05mag; still no pronounced humps. > If you really want to see any periodic variations, a 0.1176day period > seems to be one possibility. Our own analysis more favors 0.103 d period, although the above period is still perfectly viable. These observations seem to suggest, unless other features appear, that the object can be a long-period (possibly in the period gap?) dwarf nova. Since superhumps in such long-period system can sometimes be less apparent (e.g. TU Men), the low amplitude may be attributable to the weak occurence of tidal instability. Anyway, we need further coverage (hopefully longer than 3 hours per night) of the current rare, long outburst. Further analysis, as well as accurate identification by Yamaoka-san, is in progress. Regards, Taichi Kato VSNET Collaboration team
Return to the Powerful Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
