[vsnet-alert 12501] TT Ari: positive and negative superhumps

Taichi Kato tkato at kusastro.kyoto-u.ac.jp
Wed Dec 15 13:16:03 JST 2010

TT Ari: positive and negative superhumps

   We have received a great number of observations from Josch Hambsch
(observing at New Mexico), Akazawa-san and Javier Ruiz.
The object has been steadily (almost linearly) rising slowly.
As already reported, a switch from positive superhumps to negative
superhumps occurred in middle November.  This tendency continues,
but the signal has become slightly weaker in recent nights.
The object is almost returning back to the brightness before
the current fading episode.

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