Hydrodynamic simulations of irradiated secondaries in dwarf novae

Details Hydrodynamic simulations of irradiated secondaries in dwarf novae Hydrodynamic simulations of irradiated secondaries in dwarf novae

Jul 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sf2a.conf..555v&link_type=abstract

SF2A-2007: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics held in Grenoble, France, July

Astronomy and Astrophysics

Astrophysics

Scientific paper

Secondary stars in dwarf novae are strongly irradiated during outbursts. We present here numerical simulations of the surface flow on the secondary star that results from its inhomogenious heating by the accretion luminosity. We show that a circulation flow toward the Loint forms at the beginning of an outburst and thus provides a natural way to transport heat and matter. However, the Lagrangian point region is not efficiently heated this way due to the short cooling time scale of the hot matter as it enters the region shaded by the accretion disc. We discuss implication for a possible mass transfer enhancement.

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