Evolutionary stage of contact binaries

Details Evolutionary stage of contact binaries Evolutionary stage of contact binaries

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987acasn..28..274l&link_type=abstract

(Acta Astronomica Sinica, vol. 28, no. 1-3, 1987, p. 274-281) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 12, Marc

Astronomy and Astrophysics

Astrophysics

1

Astronomical Catalogs, Binary Stars, Stellar Evolution, Astronomical Photometry, Early Stars, Late Stars, Main Sequence Stars

Scientific paper

A new method of estimating the evolutionary stage reached by a contact binary from its observations is proposed. Application to 38 systems shows that all systems of subtype A and some systems of subtype W are evolved systems, from systems which may or may not be contact systems at the zero-age main-sequence stage. Both late-type and early-type contact systems are represented in the set of zero-age contact systems and the masses of their component stars are not confined by the condition proposed by Lucy for contact configuration at age zero.

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