[vsnet-alert 12209] SDSS J080434.20+510349.2: period variation of superhumps

[Taichi Kato]

SDSS J080434.20+510349.2: period variation of superhumps

   Arto Oksanen, Maehara-san and Kyoto team (observer: Ohshima-san) have
reported new observations.  The object continues to show complex superhump
and eclipse light curves.  Despite a longer (~70 cycles) baseline, there
is little indication of a period variation (+2(2)*10^(-5)).  Although such
a small period derivative is more commonly met in extreme WZ Sge-type dwarf
novae with rare outbursts, it is a rare phenomenon in a system with
a 4-year supercycle length.  Further intensive observations are encouraged.