[vsnet-outburst 12420] ER UMa : irregular variations?
Ohshima
ohshima at kusastro.kyoto-u.ac.jp
Tue Mar 8 04:51:27 JST 2011
ER UMa : irregular variations?
We have received further observations from Boyd Boitnott, Crimean
Astrophy. Obs. (relayed by Elena Pavlenko), Maehara-san, Enrique
de Miguel, and Josch Hambsch. According to these data, this object
is declining with the speed typical of SU UMa type dwarf novae.
However, interestingly, the variation of this object got to quite
irregular abruptly at Mar 6.9. At that time, the amplitude got to
smaller (from ~ 0.2 mag to less than 0.1 mag) and many weaker
peaks. Though a very uncertain guess, negative superhumps with a dip
(as seen at the later stage of the last superoutburst) appeared
again.
At any rate, this object is at the very interesting phase.
Further observations are encoruaged!
More information about the vsnet-outburst
mailing list