The Light-Time Effect in UV Leonis

Details The Light-Time Effect in UV Leonis The Light-Time Effect in UV Leonis

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..335..287e&link_type=abstract

The Light-Time Effect in Astrophysics, Proceedings of ASP Conference Series, Vol. 335, held in Brussels 19-22 July 2004. Edited

Astronomy and Astrophysics

Astrophysics

2

Scientific paper

A period study of the eclipsing binary UV Leonis based on the extensive series of published minimum times indicates a periodic O-C variation for the system. The variation can be attributed to the light-time effect due to a third body with a period of 71.73±0.90 years in the system. The analysis yields a light-time semi-amplitude of 0.006±0.0012 day and an orbital eccentricity of 0.30±0.08. Adopting the total mass of UV Leo, the mass of the third body assumed in a co-planar orbit with the binary is M3=0.096±0.038 M&sun; and the semi-major axis of its orbit is a3 =26.40 ±1.53 AU.

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