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ABSTRACT

Wilson and Devinney 1973

Wilson, R.E., and E.J. Devinney, 1973: Fundamental data for contact binaries: RZ Comae Berenices, RZ Tauri and AW Ursae Majoris. Astrophys. J., 182, 539-547, doi:10.1086/152162.

Differential correction analyses of three binaries of the W UMa type show that RZ Tau and AW UMa have common envelopes and the relatively small gravity darkening predicted by Lucy, while RZ Com seems to have a larger gravity effect and is only marginally in contact. Some details of our method for computing contact-binary light cruves are given. We suggest that W UMa binaries which have occultation primary eclipses may, in general, have large amplitudes for gravity darkenings or a photometric surface-brightness effect which simulates large gravity darkening.

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