Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apjs...54..443p&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 54, April 1984, p. 443-493.
Astronomy and Astrophysics
Astrophysics
875
Binary Stars, Stellar Evolution, Stellar Mass Ejection, X Ray Binaries, X Ray Sources, X Ray Stars, Accretion Disks, Angular Momentum, Dwarf Novae, Orbital Elements, Star Distribution, Stellar Magnetic Fields, Stellar Rotation, Stellar Structure, Stellar Winds, Variable Stars, White Dwarf Stars
Scientific paper
The observational data for the 124 cataclysmic and low-mass X-ray binaries of known orbital period are compiled. It is found that the eruption properties are very well correlated with the orbital periods, in a manner that suggests that the mass transfer is the all-important determinant of evolution and of the eruptive behavior. Transfer rates of 10 to the -11th to 10 to the -7th solar mass/year are found, which are well correlated with orbital period. It is concluded that the mechanism which drives these systems is the magnetic braking of the secondary's rotation by its own stellar wind, coupled with the enforcement of synchronous rotation by tidal friction. This permits CVs to lose sufficient angular momentum to begin mass transfer in a reasonable time and drives the mass transfer at a high rate once it begins. An account of the long-lived phases of CV evolution is given.
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