Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ap%26ss.145..117k&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 145, no. 1, June 1988, p. 117-156.
Astronomy and Astrophysics
Astrophysics
12
Darkening, Eclipsing Binary Stars, Stellar Spectrophotometry, Light Curve, Roche Limit, Stellar Mass, Stellar Temperature
Scientific paper
A quantitative analysis of the photometric ellipticity effect has been performed in order to obtain values of the exponent of gravity-darkening (alpha) for the components of 16 W UMa systems. For the case in which the fill-out factors are less than 0.5, the alpha values are found to be greater than the conventional value of 0.32. The results suggest that the structure of the photosphere of W UMa contact components is significantly different from that of normal Main-Sequence stars of similar spectral type.
Kitamura Masatoshi
Nakamura Yasuhisa
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