Modeling Formation Range of Close Binary EHB Systems

Details Modeling Formation Range of Close Binary EHB Systems Modeling Formation Range of Close Binary EHB Systems

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1283..309p&link_type=abstract

MATHEMATICS AND ASTRONOMY: A JOINT LONG JOURNEY: Proceedings of the International Conference. AIP Conference Proceedings, Volum

Astronomy and Astrophysics

Astronomy

Binary Stars, Hydrodynamics, Accretion Disks, Multiple Stars, Hydrodynamics, Infall, Accretion, And Accretion Disks

Scientific paper

This research continues our studies of EHB (Extreme Horizontal Branch) binary progenitors. The progenitor system is assumed to fill in its Roche lobe near the tip of the RGB. It was found that considerable shrinkage of the orbit can be achieved due to combined effect of angular momentum loss and accretion onto its low mass companion on the hydrodynamic timescale. Here we present ranges of initial parameters of the progenitor system for which formation of a close binary EHB object is possible. We analyze factors that influence the probability of such formation.

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