[vsnet-alert 12015] OT J213806.6+261957: fading stopped, large-amplitude superhumps

Taichi Kato tkato at kusastro.kyoto-u.ac.jp
Tue Jun 1 15:22:41 JST 2010


OT J213806.6+261957: fading stopped, large-amplitude superhumps

   According to the most recent observation by Enrique de Miguel Agustino,
the rapid fading has stopped.  Large-amplitude superhumps have emerged.

Enrique's comment:

===

Comments:     Very good weather conditions. The object has faded by
              as much as 1.22 mag since last run. The most significant 
              feature is that the superhumps are large
              in amplitude, between 0.20-0.30 mag. There seems to be
              hints of double-hump (or triple-hump) 
              structure of the superhumps.
              
              As for the superhump period, P_sh = 0.055203(25)d, with
              a prominent close peak at P=0.054935(30)d.


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