[vsnet-alert 12872] ER UMa : Negative superhumps still remaining

[Ohshima]

ER UMa : Negative superhumps still remaining

 We have received observations from Stein, de Miguel, Akazawa-san, and
Shiokawa-san. This object has declined from the normal outburst and
returned to the minimum. The amplitude of negative superhumps 
(still seen!) got larger therewith. Mutiple peaks also sometimes
appear. some appear as the dip at the maxima, others appear as small
peaks at the minima. The disk of this object seems to have a pretty
unusual energy distribution.
 Probably this object will show the next superoutburst at the end of 
Feburary. It is very interesting how this parmanent negative 
superhumps evolve in the near future! Further observations are strongly
encouraged!