Statistics – Computation
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...328..617m&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 328, May 15, 1988, p. 617-631.
Statistics
Computation
6
Binary Stars, Cataclysmic Variables, Roche Limit, Stellar Evolution, Stellar Interiors, Stellar Mass, Angular Momentum, Computational Astrophysics, Lagrangian Equilibrium Points, Mass Transfer, Neutron Stars
Scientific paper
The structure and evolution of low-mass stars in short-period binary systems is investigated with specific attention focused on the effects of He-3 disequilibrium burning. It is found that the He-3 abundance in the central regions of the secondary component can appreciably depart from the equilibrium value, especially during the phase of evolution when the secondary is nearly fully convective. For angular momentum losses associated with gravitational radiation and weak magnetic braking, it is found that convection develops in the central regions of the secondary independent of the convective envelope. During the outward advance of the convective core boundary, the radius of the secondary actually increases briefly as the central He-3 abundance increases due to convective mixing. Upon the merger of the two convective regions the He-3 energy-burning regions and the secondary detaches from its Roche lobe. The duration of the detached phase decreases with the age and mass of the secondary component prior to the onset of mass transfer.
McDermott P. N.
Ringwald Fred A.
Taam Ronald E.
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