Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984afz....20..573t&link_type=abstract
(Astrofizika, vol. 20, Nov.-Dec. 1984, p. 573-586) Astrophysics (ISSN 0571-7132), vol. 20, no. 6, May 1985, p. 671-679. Translat
Astronomy and Astrophysics
Astrophysics
Binary Stars, Stellar Magnetic Fields, Stellar Winds, Angular Momentum, Cataclysmic Variables, Stellar Mass, X Ray Binaries
Scientific paper
The empirical law formulated by Skumanich (1972) to describe the slowing of stellar angular momentum by a magnetic stellar wind is applied to the case of low-mass binary systems with component separation less than 10-12 solar radii. Consideration is given to the evolution of the W UMa stars of catacylsmic binaries and to the formation of cataclysmic binaries, and the magnetic stellar wind is found to play a significant role if at least one component has a convective envelope and mass 0.3-1.5 solar mass, while no wind is present for stars less than 0.3 solar mass and hence no contact may occur in binaries with two such low-mass components. The implications of these findings for high-luminosity X-ray binaries and objects such as 100 Algol are briefly examined.
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