IY UMa: preliminary results of the last night observation at Kyoto
In our last night observation on IY UMa, we have succeeded in
detecting four eclipses during 7 hours run. The depth of the eclipses
is about 2.5mag. The ingress is sharp and the egress have a somewhat
long shoulder. A hot-spot can be responsible. The bottom looks
relatively flat, which may imply that this observation covers
early phase of the outburst. Our light curve shows no evidence
of presense of humps.
Our tonight run will start from 14:00 (UT).
Regards,
M. Uemura, R. Ishioka, T. Kato, M. Katsura, H. Iwamatsu
at Kyoto University
vsnet-adm@kusastro.kyoto-u.ac.jp