[vsnet-alert 21457] Re: PNV J20205397+2508145: ordinary superhump

Taichi Kato tkato at kusastro.kyoto-u.ac.jp
Fri Sep 22 14:04:44 JST 2017

Re: PNV J20205397+2508145: ordinary superhump

> This one-day gap in observations during transition
> to stage A is commonly seen in many objects, suggesting
> that there is a common underlying reason.

   Also, there has been various types of phenomena
(such as double superoutburst or dip) when
the 2:1 resonance switches off.  This moment is most
astrophysically interesting and it's a pity to miss it.
(AAVSO observer ATE observed a hump in this interval
on a fading trend.  It probably cannot be confirmed from
a single short run whether there was a dip or not).
Please keep in mind that such an observation is
difficult to repeat and pay as much attention as possible
particularly if the object is of some special interest
(bright, high-amplitude early superhumps etc.)

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