[vsnet-alert 15403] GR Ori: emerging periodicity?

Taichi Kato tkato at kusastro.kyoto-u.ac.jp
Sun Feb 17 10:31:18 JST 2013

GR Ori: emerging periodicity?

   We have received new data from Maeda-san, Roger Pickard,
Astrokolkhoz team (Tom Krajci and Josch Hambsch).
The most recent data by the Astrokolkhoz team on two nights
seem to suggest the presence of a longer period (~2 hr).
An analysis of the data yielded a period of 0.0823(5) d
with amplitudes of 0.03 mag.  The profile looks like
that of superhumps.  This period (very long for a WZ Sge-type
dwarf nova) may be the true periodicity of this object, 
and please continue to keep eye on this object.

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