[vsnet-alert 9955] J0902+05: Early superhumps with possible eclipses?

[Makoto Uemura]

J0902+05: Early superhumps with possible eclipses?

Our last night (5 Mar) observation of this new object detected 
periodic short-term variations. They have a double-peaked structure 
with very large amplitudes of 0.5-0.6 mag. 

http://kanatatmp.blogspot.com/search/label/J0902%2B05

Our preliminary period analysis shows the best period of 0.0563(4) day.

They are probably early superhumps which are observed in WZ Sge stars. 
Their large amplitude indicates the object is a high inclination system. 
In our light curve, we can see a hint of shallow eclipses at 
the bottom of humps.

Since the orbital period is roughly equal to the period of early superhumps, 
its orbital period is about 81 min. This is similar to V455 And.

Follow-up observations are encouraged.

Regards,
M. Uemura and A. Arai
on behalf of the KANATA team
Hiroshima University