[vsnet-alert 12060] Re: Wils_SDSSJ162520.29+120308.7 variation, type?

[Gianluca Masi]

Dear Colleagues,

I'm still doing time resolved photometry on this source, which I found 
basically as bright as at the end of my previous run (yesterday).

I see the star is showing some large modulation (0.1/0.2 mag or more), 
possible resembling regular superhumps. If confirmed, this would suggest 
this is a SU UMa CV. Period of the modulaton is 1.5 hours (by eye!)

More once the run will be finished.

Regards,
Gianluca



Taichi Kato ha scritto:
> Wils_SDSSJ162520.29+120308.7 variation, type?
> 
>    Just received data from Gianluca Masi.  Indeed interesting modulations!
> The object was rather rapidly fading at a rate of 0.38 mag/d.
> Superimposed (relatively regular) modulations have a period of 0.047(8) d,
> as Masi has pointed out.  Although this periodicity needs to be verified,
> if this period reflects the orbital or superhump period, the object may be
> analogous to V485 Cen and EI Psc (then consistent with the underlying
> M-type spectrum).  It even seems to me that underlying white dwarf was
> visible around Hbeta and Hgamma on the SDSS spectrum.
> Further detailed observations are encouraged!
> 
> 
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