Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001arep...45..538k&link_type=abstract
Astronomy Reports, Volume 45, Issue 7, July 2001, pp.538-552
Astronomy and Astrophysics
Astronomy
7
Scientific paper
We have analyzed light curves of the eclipsing cataclysmic variable IP Peg. A model with a shockless interaction between the gaseous stream and disk (i.e., an elliptical disk with a “hot line”) can describe the main characteristic features of the light curve of the interacting close binary better than a classical model with a “hot spot” at the outer boundary of a circular accretion disk. In particular, the hot-line model can reproduce the luminosity increase observed at phases ϕ˜0.1 0.2 and ϕ˜0.5 0.6, which is not possible in the standard hot-spot model. The advantages of the hot-line model are particularly striking for the IR light curves of IP Peg: the discrepancy χ2 between the theoretical and observed light curves is 49 for the model with a shockless interaction between the gaseous stream and disk, and 2681 for the standard hot-spot model.
Bisikalo Dimitry V.
Boyarchuk Alexander A.
Cherepashchuk Anatol M.
Khruzina T. S.
Kuznetsov Oleg A.
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