Asymmetric light curves of the contact binary AB Andromedae

Details Asymmetric light curves of the contact binary AB Andromedae Asymmetric light curves of the contact binary AB Andromedae

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.208..123b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 208, May 1, 1984, p. 123-133. Research supported by the

Astronomy and Astrophysics

Astronomy

11

A Stars, B Stars, Binary Stars, Light Curve, Variable Stars, Astronomical Catalogs, Asymmetry, Orbital Elements, Spectral Energy Distribution, Spectrum Analysis, Stellar Envelopes, Stellar Magnitude, Stellar Rotation

Scientific paper

Photometric observations using a novel observing technique are presented for the W UMa-type binary system AB And. Light curves obtained on three nights in 1981 and on two nights in 1982 show significant differences and asymmetries, which may be explained qualitatively in terms of starspots located preferentially on the primary component and as a brightening of the "neck" region of the common envelope. Parameters for the system, derived from undistorted parts of the light curves, are in good agreement with most previous work. The orbital period of the system has now remained constant for some 30 years.

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