| Issue |
A&A
Volume 491, Number 3, December I 2008
|
|
|---|---|---|
| Page(s) | 899 - 906 | |
| Section | Planets and planetary systems | |
| DOI | https://doi.org/10.1051/0004-6361:200810741 | |
| Published online | 01 October 2008 | |
Stellar wobble caused by a binary system: Can it really be mistaken as an extra-solar planet?
1
Centro de Física Computacional, Universidade de Coimbra, 3004-516 Coimbra, Portugal e-mail: hmorais@mat.uc.pt
2
Departamento de Física, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal e-mail: correia@ua.pt
3
IMCCE, CNRS-UMR8028, Observatoire de Paris, UPMC, 77 avenue Denfert-Rochereau, 75014 Paris, France
Received:
4
August
2008
Accepted:
25
September
2008
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.
Key words: techniques: radial velocities / methods: observational / celestial mechanics / stars: planetary systems / stars: binaries: general
© ESO, 2008
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