[vsnet-superoutburst 1190] DM Dra superhump detection at Kyoto

[Taichi Kato <tkato>]

DM Dra superhump detection at Kyoto

Dear Colleagues,

   We have partly finished the analysis of the Kyoto Nov. 14 run of DM Dra.
The light curve clearly shows 0.3-mag superhump feature, perfectly consistent
with Vanmunster's finding.

   The Kyoto team observed this star on 2000 Oct. 27 (see vsnet-campaign-dn
243).  The object was by about 0.6 mag brighter last night than on 2000
Oct. 27.  Although the 2000 Oct. 27 observation covered 0.091 d, the upper
limit of superhump-type variation was 0.1 mag (vsnet-campaign-dn 243).
The conclusion is confirmed to be unchanged after another inspection of
the past data.  This suggests that the amplitude of superhumps can quickly
decay in this system; early observations are very important.

   The VSNET Collaboration team will continue observing this star in order
to refine the superhump period, and to follow the time-evolution of hump
features.  Since the seasonal condition is not best for this object,
we encourage further observations at different longitudes.

Regards,
Taichi Kato
VSNET Collaboration team

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