[vsnet-alert 11600] TT Ari: periodicity disappeared?

Taichi Kato tkato at kusastro.kyoto-u.ac.jp
Sun Oct 25 14:53:29 JST 2009


TT Ari: periodicity disappeared?

   Based on recent observations, TT Ari has apparently lost its
semi-periodicity around P=0.375 d since Oct. 18.  Although modulations
were recorded, there does not seem to be a stable period.
The system also appears to have slightly brightened.
Further intensive observations are encouraged.


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