[vsnet-alert 12715] ER UMa superhumps

Ohshima ohshima at kusastro.kyoto-u.ac.jp
Fri Jan 28 05:04:35 JST 2011

ER UMa superhumps

 We have received further obsevrations from Tom Krajci.
According to the obtained data, clear multiple peaks
have outstood  after Jan. 26. Although multiple peaks
themselves had been seen before, it is difficult to 
determine which is the maxima because of strong multiple 
peaks after Jan.  26.
 Additionally the periodicity of superhumps became 
a little irregular, the interval of each superhump maxima 
fluctuates between ~ 0.05 and  ~ 0.08 d. This is unusual
state for superhumps (Since I could not speculate how many
superhump maxima there was in the blank of observations,
I tried to obtain O-C value in vain). 
Further observations are required!

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