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Pre-Cataclysmic System V471 Tau with Confirmed Brown Dwarf and Suspected Extrasolar Planet

Published online by Cambridge University Press:  23 April 2012

Ladislav Hric  and
Emil Kundra
Ladislav Hric
Affiliation:
Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica, Slovakia email: hric@ta3.sk
Emil Kundra
Affiliation:
Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica, Slovakia email: hric@ta3.sk
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Abstract

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We can show that analysis of the (O-C) diagram is a powerful method of detecting new bodies in binary systems. For this purpose we need very symmetric minima with precisely determined shapes. In the case of good covering by observations with high time resolution, it is possible to determine the times of such minima with sufficient accuracy. In the case of V471 Tau, the (O-C) diagram gave us residua which can be explained by the presence of a fourth body with substellar mass in the system.

Keywords

Eclipsing binariescataclysmic variablesV471 Tauexoplanets

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