[vsnet-outburst 14955] V1159 Ori: distinct precursor outburst

[Taichi Kato]

V1159 Ori: distinct precursor outburst

   Josch Hambsch and Enrique de Miguel have reported further
observations (a complete list of observations in the meantime
will be reported by Ohshima-san).  These data clearly
indicate that there was a precursor (normal) outburst
preceding the appearance of superhumps.  This association
of a inside-out type precursor outburst followed by the growth
of positive superhumps very much resembles the sequence
observed in ER UMa in 2011 early March (see Ohshima et al.
PASJ 63, L3).  This is a strong support that this superoutburst
is initiated by the tidal instability as predicted by
the TTI theory (see also Osaki and Kato arXiv 1212.1516).