[vsnet-campaign-dn 2787] Superhumps in KV Dra

[Daisaku NOGAMI <nogami@kwasan.kyoto-u.ac.jp>]

Dear colleagues,

We carried out V-band time-resolved photometry of KV Dra at
Hida Observatory, Kyoto University with a 60cm reflector
in Sep. 2.465-2.637 (UT).  Beautiful superhumps with an
amplitude of ~0.23 mag were caught.  A preliminary period
analysis gives a superhump period (Psh) of 0.0596(+-0.0008)
d, same as that reported in Nogami et al. (2000, A&A, 364,
701) within the error.  This may imply that Psh stay constant,
although Psh get longer in SU UMa stars with the orbital
period close to that of KV Dra (see e.g. Kato et al. 2001,
PASJ, 53, 1191).  Follow-up observations to reveal changes
of the superhump are encouraged.

Best regards,
Daisaku Nogami

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