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

[Taichi Kato]

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