Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.189..907t&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 189, Dec. 1979, p. 907-909.
Astronomy and Astrophysics
Astronomy
33
Eclipsing Binary Stars, Limb Darkening, Stellar Atmospheres, Systems Analysis, Computer Programs, Gravitational Effects, Light Curve, Stellar Models, Stellar Temperature
Scientific paper
An analysis of seven A-type W UMa eclipsing binary stars using the Wilson-Devinney computer code is presented. The objectives were (1) determination of accurate values of the bolometric albedo, gravity darkening exponent, and linear limb darkening coefficients for these systems, and (2) analyzing light curves from several epochs to detect system parameter changes in three stars. It was shown that a gravity darkening exponent is preferred by the systems in this sample; the linear darkening coefficients show systematic deviations from the theoretical values predicted by stellar atmosphere models, and a wide range of values of the bolometric albedo A is indicated.
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