The /a, M1/ diagram for spectroscopic binaries

Details The /a, M1/ diagram for spectroscopic binaries The /a, M1/ diagram for spectroscopic binaries

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pazh....8..297p&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 8, May 1982, p. 297-301.) Soviet Astronomy Letters, vol. 8, May-June 1982, p. 160-162.

Astronomy and Astrophysics

Astronomy

11

Binary Stars, Star Distribution, Stellar Spectra, Stellar Envelopes, Stellar Mass, Stellar Winds

Scientific paper

The spectra of 333 double-line binaries are examined in order to determine how spectroscopic binaries with two visible spectra are distributed with respect to the mass of the primary component and the major semiaxis of the orbit. Most of these systems have not yet undergone mass exchange. Mass-dependent forbidden zones found in the (a, M-1) diagram are discussed. To explain the observed distribution, it is suggested that some binary stars may coalesce, forming single objects early in their evolution. Binary components with M-1 less than 1.5 solar mass would have convective envelopes and probably a magnetized stellar wind, enabling them to shed orbital angular momentum and so draw closer together.

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