VZ Librae: an Eclipsing Contact Binary in a Ternary System

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Michel Bonnardeau

116 Jonquille Arzelier, 38650 Chateau-Bernard, France


Received July 13, 2009; Revised August 24, 2009; accepted September 3, 2009

Time series of the eclipsing contact binary VZ Lib are reported and times of minima (ToM) of the eclipses are measured. This system has a third component. From the O–C analysis of the observed ToM and of those in the literature, the orbital parameters of the third body can be derived: the orbital period is 34.8 years and the inclination is 11.5°.

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