[vsnet-outburst 12237] ER UMa: continuously negative supehrump
Ohshima
ohshima at kusastro.kyoto-u.ac.jp
Sat Feb 5 03:35:58 JST 2011
ER UMa: continuously negative supehrump
We have further observations from Okayama U. of Sci. team
(including Akazawa-san), Shiokawa-san, William L. Stein and
Enrique de Miguel.
According to obtained data, the negative supehrumps are
continuously seen after normal outburst on Jan 31. Meanwhile
the amplitude is getting larger, ~ 0.8 mag. For data after
Jan 31, the mean superhump period is 0.062434 (12) d. Negative
superhump period have been relatively stable since the previous
superoutburst.
It is interesting how long this negative superhump persist.
Further observations are required.
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