Statistics – Computation
Scientific paper
Aug 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...221...49d&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 221, no. 1, Aug. 1989, p. 49-61.
Statistics
Computation
31
Early Stars, Eclipsing Binary Stars, Light Curve, Ubv Spectra, Amplitudes, Companion Stars, Computational Astrophysics, Least Squares Method, Roche Limit
Scientific paper
The Wilson-Devinney approach (Li and Leung, 1985) has been combined with a nonlinear optimization method in order to obtain the light curves of the early-type eclipsing binaries LY Aur and AH Cep. For LY Aur, the photometric solution suggests a configuration of marginal contact and yields a mass ratio of q = 0.62 which is close to the value derived by Popper (1982). For AH Cep, a third body is implied by (O-C) studies as well as by the presence of a third light. Different inclination angles are found to result from the old and new light curves of AH Cep. The results suggest that both LY Aur and AH Cep are eclipsing binaries with changing inclinations due to a third body.
Drechsel Horst
Lorenz Robert
Mayer Peter
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