General Properties of Near-Contact Binaries

Details General Properties of Near-Contact Binaries General Properties of Near-Contact Binaries

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000jass...17..162o&link_type=abstract

Journal of Astronomy and Space Sciences, vol. 17, no. 2, p. 151-162

Astronomy and Astrophysics

Astronomy

General Properties, Near-Contact Binaries

Scientific paper

The general properties of the NCBs, divided into A and F types according to their spectral types, have been presented. The evolutionary status of the F type near-contact binaries are closer to that of the contact systems, i.e., W UMa type binaries, if it is assumed that the evolution of the NCBs is governed by the thermal relaxation oscillation theory. The mass-radius relation, mass-luminosity relation and H-R diagram of the NCBs provide that the A type NCBs suffer from more active mass transfer than F types. The components of the NCBs are still in main-sequence like W UMa type stars and their two components lines parallel to the ZAMS.

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