Accretion disk of the cataclysmic variable IY UMa in quiescence and its active state

Details Accretion disk of the cataclysmic variable IY UMa in quiescence and its active state Accretion disk of the cataclysmic variable IY UMa in quiescence and its active state

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008arep...52..815k&link_type=abstract

Astronomy Reports, Volume 52, Issue 10, pp.815-834

Astronomy and Astrophysics

Astronomy

97.80.Gm, 97.80.Hn, 97.10.Gz

Scientific paper

We present the results of a study of the eclipsing binary IY UMa (type SU UMa) during its superoutburst of 2004 and in quiescence.We have refined the orbital period of the system. Light curves are presented for various states of activity.We estimate the parameters of IYUMa during the superoutburst and in quiescence for hot-line and spiral-wave models. The spiral-wave model, which takes into account the presence of vertical perturbations in outer parts of the disk, is able to reproduce the light-curve shapes and phases of dips in the out-of-eclipse parts of the binary’s light curves during the outburst both qualitatively and quantitatively.

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