The Light Curve of the Eclipsing Binary Star XX Leo

Volume 28 number 1 (2000)

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Michele A. Stark

Michael T. Hamlin

Jeffrey R. Anderson

Felicia V. Berryman

Matthew A. Disbro

Craig Dyni

Timothy A. Gates

Abstract

Light curves for the eclipsing binary XX Leo have been produced in the Johnson V and Cousins R bands. The light curves indicate that XX Leo is a contact or near-contact binary system with the relatively long period of 0.971130 day. The period of XX Leo has remained constant or nearly so since at least JD 2446110.