Mathematics – Logic
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.218..247m&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 218, Jan. 15, 1986, p. 247-263.
Mathematics
Logic
7
Angular Momentum, Binary Stars, Stellar Magnetic Fields, Stellar Models, Stellar Rotation, Stellar Winds, Magnetic Dipoles
Scientific paper
Calculations are presented for phenomenological models of magnetically controlled stellar winds in close binary systems of unit mass ratio in circular orbits with synchronization of orbital and rotational motion. The magnetic field is taken as the sum of two equal dipoles placed at the stellar centers, aligned parallel to the rotation axis. Two different assumptions are made about the extent of the 'dead zones' on the stellar surface, from which wind does not flow. Case A is the most conservative, and almost certainly exaggerates the size of these regions, in a similar manner to that found previously by Mestel (1968) for single stars. This has the consequence that the angular momentum loss rate does not necessarily increase with increasing field strength. Case B gives a smaller dead zone, and reduces the importance of this saturation mechanism. Some comparisons are made with other discussions of the binary wind problem.
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