[vsnet-alert 14458] ER UMa: weak negative superhumps appearing?

Ohshima ohshima at kusastro.kyoto-u.ac.jp
Thu Apr 19 23:20:46 JST 2012


ER UMa: weak negative superhumps appearing?

 We have received further observations from Akazawa-
san, Osaka Kyoiku Univ., Colin Littlefield, and 
William Stein.
 According to these data, the superoutburst had been
continueing and positive superhumps were mainly seen.
However, weak negative superhumps were als sometimes 
seen. Negative superhumps may start to appear again.

 Further observations are encouraged!


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