[vsnet-outburst 9407] OT_J020025.4+441019: revised early superhump period

[Hiroyuki Maehara]

Dear colleagues,

We have received time-series data of the object from Michael Richmond.
The data show humps with an amplitude of 0.1 mag.
The mean early superhump period estimated from early superhump
minimum timings (time-series data by Michael Richmond and light curves
by Korotkiy Stas and Pavol A. Dubovsky) is 0.05635 d.

In addition to early superhumps, short period (~0.01-0.02d) modulations
can be seen in the data. Similar modulations were observed in the 2007 
superoutburst of another WZ Sge-type star V455 And (=HS2331+3905).

Further time-series observations are strongly encouraged.
If you succeed in observing, please report your data to:

vsnet-campaign-report at ooruri.kusastro.kyoto-u.ac.jp

Best regards,
Hiroyuki Maehara
VSNET Collaboration Team