Return to Home Page
V585 Lyr: further evolution of superhumps Dear Colleagues, The VSNET Collaboration has received new data from Rudolf Novak (4 nights), Tom Krajci and Lew Cook. We have also obtained a full length observation at Kyoto (observer: M. Uemura and R. Ishioka). The data on September 23 show a marked decrease of the superhump amplitude. This is clearly a signature frequently associated with short-period SU UMa stars (see e.g. Kato et al. PASJ in press, astro-ph/0307064) with late-time brightening and regrowth of superhumps. Please keep observing! At the same time, it has become evident (with Novak's new data) that early-stage low-amplitude (about 0.05 mag) superhumps were already present on September 14. The earlier reported period at this stage was apparently caused by a slow drift on the baseline. Combined data sets now clearly demonstrate that the present superhump period (not its twice) was the dominant period even during the earliest stage. The growth of the genuine superhumps was rather slow, but not paticularly unusual for this short superhump period. Regards, Taichi Kato VSNET Collaboration team
Return to the Powerful Daisaku
vsnet-adm@kusastro.kyoto-u.ac.jp
