Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21349123m&link_type=abstract
American Astronomical Society, AAS Meeting #213, #491.23; Bulletin of the American Astronomical Society, Vol. 41, p.471
Astronomy and Astrophysics
Astrophysics
Scientific paper
The cataclysmic variable star SDSS J080434.20+510349.2 was observed in the SDSS r' filter using the Photometric Telescope at Apache Point Observatory and at the Crimean Astrophysical Observatory, Ukraine in the R filter with the 2.6 meter Telescope. There exist previous observations which cover the terms before and during the flare of 2006 and for 2 years after it (Szkody et al. AJ 2006, 131,973; Pavlenko E.P. et al, ASP Conf. Ser.,2007,372,511). Here we present results of a study of the pulsation of this object during January - May 2008; about two years after the flare. We find that during this time light curves show two stable periods of 12.6 min and its doubled value. We also find a more accurate determination of the orbital period to be 0.059005(3) days and the period of the superhump to be 0.059729(4) days. In addition, we present a new estimate of the mass of the second component as 0.037 - 0.087 M&sun; . This is in agreement with the assumptions that the second component is a brown dwarf star.
Malanushenko Elena
Malanushenko Viktor
Pavlenko Elena P.
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