Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.190..395p&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 190, Feb. 1980, p. 395-402. Research supported by the Smithsonian Forei
Astronomy and Astrophysics
Astronomy
8
Eclipsing Binary Stars, Hot Stars, Stellar Evolution, Stellar Models, Subdwarf Stars, Radial Velocity, Stellar Envelopes, Stellar Luminosity, Stellar Mass, Stellar Occultation, Stellar Structure
Scientific paper
An evolutionary model is proposed for the eclipsing binary system LB 3459. It is noted that the two stars are hot subdwarfs with degenerate helium cores, hydrogen burning shell sources and low mass hydrogen rich envelopes, and that the system probably evolved through two common envelope phases. It is reported that the present mass of the optical (spectroscopic) primary is probably close to 0.24 solar mass, and that the predicted radial velocity amplitude of the primary is about 150 km/s. Finally, it is predicted that the optical secondary should be hotter and bolometrically brighter, with a mass of 0.32 solar mass.
Dearborn David S.
Paczyński Bohdan
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