On the accretion disc properties in eclipsing dwarf nova EM Cyg

Details On the accretion disc properties in eclipsing dwarf nova EM Cyg On the accretion disc properties in eclipsing dwarf nova EM Cyg

2009-11-25

arxiv.org/abs/0911.4790v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

6 pages, 3 figures, accepted in Astrophysics and Space Science

Scientific paper

10.1007/s10509-009-0228-y

In this paper we analyzed the behavior of the unusual dwarf nova EM Cyg using the data obtained in April-October, 2007 in Vyhorlat observatory (Slovak Republic) and in September, 2006 in Crimean Astrophysical Observatory (Ukraine). During our observations EM Cyg has shown outbursts in every 15-40 days. Because on the light curves of EM Cyg the partial eclipse of an accretion disc is observed we applied the eclipse mapping technique to reconstruct the temperature distribution in eclipsed parts of the disc. Calculations of the accretion rate in the system were made for the quiescent and the outburst states of activity for different distances.

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