The
January 2003 superoutburst of UV Gem
See also the April
2002 observations of this cataclysmic variable, of
which we detected the SU UMa-type nature in December
1999.
Below are the data that we obtained at CBA Belgium
Observatory during the January 2003 outburst of UV
Gem.
The light curve of January 08/09 shows very
distinctive superhumps. A rough analysis of the
superhump period value yields a result of 0.093 d,
although the timebase is a bit short to accurately
determine the value.
Extract from
<vsnet-campaign-dn 3302> by Taichi Kato :
"We have received a further set of data from
Tonny Vanmunster. We have further
analyzed the reported data which are steadily
growing! A preliminary period
analysis has revealed an interesting period change.
Up to Jan. 7, the superhumps were
well expressed by a single period of 0.0966
d. After that, The period suddenly switched to
0.0932 d. The difference
between these periods are comparable to the
differences between superhump
periods and orbital periods! Such a dramatic change
(and a large change) in the superhump
period is quite unexpected and unprecedented
in SU UMa-type superhumps. Such a dramatic change
may have affected the past
(seemingly contractding) interpretation of the UV
Gem superhumps."
