Statistics – Computation
Scientific paper
Nov 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.253....9t&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 253, Nov. 1, 1991, p. 9-18.
Statistics
Computation
73
Binary Stars, Stellar Mass Accretion, Stellar Winds, Computational Astrophysics, Mathematical Models, Red Giant Stars, Stellar Evolution, Stellar Models
Scientific paper
Quantitative estimates for conditions governing wind-driven mass transfer in interacting binary systems are presented. It is shown that, for a semidetached system in which the lobe-filling star is a red giant, mass loss from this star by the system as a whole can drive mass transfer. If the mass is lost on a sufficiently short time-scale, this wind-driven mass transfer can dominate over the traditional-nuclear driven mass transfer. If additional angular momentum is lost because the escaping material is forced to corotate out to some Alfven radius, the mass transfer can be driven at an even greater rate. In this case the rates of mass transfer and of mass loss can be quantified as functions of the mass ratio and the Alfven radius. Some numerical models of the expected evolution are presented and observational predictions are examined. It is found that the radii of evolved semidetached systems are more consistent with wind-driven evolution than the traditional nuclear-driven Riche-lobe overflow.
Hall Douglas S.
Tout Christopher A.
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