[vsnet-alert 14594] SBS1108+574: superhumps seen again

Ohshima ohshima at kusastro.kyoto-u.ac.jp
Thu May 17 00:56:44 JST 2012


SBS1108+574: superhumps seen again

 We have received further observations from Bill Goff
and Enrique de Miguel. According to these data, this
object wasdeclining at the speed of 0.1 mag /d.
O-C diagram shows that the period of variations of
this object got shorter around May 10 ~11, but this
trend seems temporal. Newest data implies that positive
superhumps were seen again although not so clear due
to faintness and small amplitude.
 Such tempral disappearence of superhumps and excess of
orbital humps were also seen in BW Scl. This may be 
associated with short orbital period.

 Further observations are encouraged!


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