Activity of five WZ Sge-type systems in a few years after their outbursts

Authors :: Pavlenko, E.
Antoniuk, O.
Antoniuk, K.
Andreev, M.
Samsonov, D.
Baklanov, A.
Golovin, A.
Source :: 2010AIPC.1273..332P
Publication Year :: 2011
Abstract: We present results of observations and analysis of five WZ-type dwarf novae: SDSS J080434.20+510349.2, SDSS J102146.44+234926.3, V1108 Her, ASAS J0025 and WZ Sge in 3 - 7 years after their outbursts. We found: 1) the observational evidences that emerging of the white dwarf nonradial pulsation in SDSS J080434.20+510349.2 [1] is no longer a regular since 3-rd year after 2006 outburst; 2) the true value of orbital period for V1108 Her (0.05672 d) and mass ratio (0.09); 3) The main feature of quiescent light curves of ASAS J0025 is the high-amplitude quasiperiodical light variations probably originated in accretion disk; 4) in SDSS J102146.44+234926.3 in some occasions the brightness is modulated by period of 0.01367 day or with the multiple of it. The main brightness modulation of J080434.20+510349.2, V1108 Her and WZ Sge is the orbital one and has two-humped shape.<br />Comment: 17th European White Dwarf Workshop. AIP Conference Proceedings, Volume 1273, pp. 332-337 (2010). 6 pages; 6 figures