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Stellar wobble caused by a binary system: Can it really be mistaken as an extra-solar planet?

Authors: M. H. M. Morais; A. C. M. Correia

Ref.: Astronomy & Astrophysics 491, 899-906 (2008)

Abstract: The traditional method for detecting extra-solar planets relies on measuring a small stellar wobble which is assumed to be caused by a planet orbiting the star. Recently, it has been suggested that a similar stellar wobble could be caused by a close binary system. Here we show that, although the effect of a close binary system can at first sight be mistaken as a planetary companion to the star, more careful analysis of the observational data should allow us to distinguish between the two effects.

DOI: 10.1051/0004-6361:200810741