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

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

2008-10-02

arxiv.org/abs/0810.0506v1

Astronomy and Astrophysics

Astrophysics

9 pages, 6 figures. Astronomy & Astrophysics, in press

Scientific paper

10.1051/0004-6361:200810741

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 was suggested that a similar stellar wobble could be caused by a close binary system (Schneider and Cabrera, 2006). 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.

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