The angular momentum loss of low-mass close binary systems

Details The angular momentum loss of low-mass close binary systems The angular momentum loss of low-mass close binary systems

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.206..179s&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 206, no. 2, p. 179-190

Astronomy and Astrophysics

Astrophysics

Accretion Disks, Angular Momentum, Binary Stars, Main Sequence Stars, Stellar Evolution, Stellar Magnetic Fields, Stellar Mass, Stellar Winds, Gravitational Fields, Orbital Mechanics, Stellar Models

Scientific paper

The detailed evolution of low-mass main-sequence stars (M less than 1 Solar Mass) with a compact companion is studied. For angular momentum loss associated with magnetic braking it is found that about 10-11- 10-12 Solar Masses/yr in stellar wind loss would be required. This wind is 100-1000 times stronger than the solar wind, so we believe here magnetic stellar wind is insufficient. It is well known that there is mass outflow in low-mass close binary systems. We believe here that these outflows are centrifugal driven winds from the outer parts of the accretion disks. The winds extract angular momentum from these systems and therefore drive secular evolution. Disk winds are preferred to winds from the secondary, because of the lower disk surface gravity.

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