Rapid Mass Transfer Can Drive Mass Out of a Binary

Details Rapid Mass Transfer Can Drive Mass Out of a Binary Rapid Mass Transfer Can Drive Mass Out of a Binary

Aug 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..404..218r&link_type=abstract

The Eighth Pacific Rim Conference on Stellar Astrophysics: A Tribute to Kam-Ching Leung ASP Conference Series, Vol. 404, proceed

Astronomy and Astrophysics

Astrophysics

Scientific paper

Algols observed with a high mass ratio are not sufficiently produced by conservative binary evolution. In this contribution we propose a liberal scenario in which the binary can lose mass. In the case of direct impact the gainer spins up; sometimes up to critical velocity. Equatorial material on the gainer is therefore less bound. The sum of rotational and radiative energy of hot spot material depends on the mass-transfer rate. The sum of both energies overcomes the binding energy at a well defined critical value of this rate. As long as the mass transfer rate is smaller, RLOF happens conservatively. But as soon as the critical rate is exceeded the gainer will acquire no more than the critical value and RLOF runs into a liberal era.

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