[vsnet-campaign-dn 2236] CP Dra: shorter-period superhumps?

[Makoto Uemura <uemura@kusastro.kyoto-u.ac.jp>]

CP Dra: shorter-period superhumps?

    In the light curve taken at Kyoto on March 31, we detected 
three hump-like features (amplitude ~0.2mag), whose period is roughly 
estimated to be 0.064 d.  This is quite shorter than that previously 
reported (0.08348 d) in the last superoutburst in 2001 February.  
I remember that, also during the early phase of the last superoutburst, 
the shorter-period superhumps were reported by T. Vanmunster (0.0687 d) 
and the Kyoto team (0.078 d).  The object may show a rapid increase 
of the superhump period in the early phase of superoutbursts.  
Follow-up observations are essential to confirm the period increase of 
superhumps.

# A summary of the last superoutburst is available from "VSNET 2001"
# http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Summary/vsnet2001/vsnet2001.html

Regards,
Makoto Uemura

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