[vsnet-outburst 9405] Re: [vsnet-alert 10489] OT_J020025.4+441019: more on early superhumps

[Pavol A. Dubovsky]

Dear friends,
I found period 0.0575d in the data taken last night. The amplitude of 
light variations was around 0.15 mag. See 
http://var.kozmos.sk/Slovakia_obslog.php?obs_id=&projekt=%&star=OTJ0200

Clear skies!
Pavol A. Dubovsky
AO Kolonica

Taichi Kato  wrote / napísal(a):
> OT_J020025.4+441019 (new WZ Sge-type dwarf nova in And)
> 
>    According to Ka-Dar page, the following light curves have been obtained.
> 
> http://www.ka-dar.ru/forum/index.php/topic,1274.0.html
> 
>    Although the curve is slightly irregular, the "B" curve (lower)
> shows fadings by 0.05 mag separated by 1.5 hour.  Sharper minima
> (than maxima) are characteristic to WZ Sge-type early superhumps.
> Assuming 20 cycles between these observations on two nights,
> the period of the early superhumps (=orbital period) is 0.0554 d.
> Further continuous observations are urgently requested because
> the amplitudes of early superhumps tend to decay very quickly.
> 
>    For more information on early superhumps, see e.g.
> 
> http://adsabs.harvard.edu/abs/2001PASJ...53.1191K
> http://adsabs.harvard.edu/abs/2002PASJ...54L..11K
>