Astronomy and Astrophysics – Astronomy
Scientific paper
May 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977mnras.179..359r&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 179, May 1977, p. 359-375. Research supported by the Science Research C
Astronomy and Astrophysics
Astronomy
153
Angular Momentum, Eclipsing Binary Stars, Orbital Mechanics, Stellar Evolution, Stellar Mass Accretion, Celestial Mechanics, Circular Orbits, Spheres, Stellar Luminosity, Stellar Rotation
Scientific paper
The evolution of a close binary system with a total mass of 1.8 solar masses is analyzed for various values of orbital angular momentum and various assumed efficiencies for the luminosity-transfer process in the contact state. It is assumed that each component is spherical, the orbit is circular, and mass transfer occurs via spherical accretion directly onto the mass-gaining star; rotational and tidal effects on the structure of the stars are neglected along with the angular momentum associated with the spin of the components. Cyclic as well as noncyclic evolution of the system is followed through the detached, semidetached, and contact phases. Application of the results obtained to A-type W UMa systems is evaluated.
Eggleton Peter P.
Robertson John A.
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