Issue |
A&A
Volume 479, Number 1, February III 2008
|
|
---|---|---|
Page(s) | 271 - 275 | |
Section | Planets and planetary systems | |
DOI | https://doi.org/10.1051/0004-6361:20078908 | |
Published online | 12 December 2007 |
The ELODIE survey for northern extra-solar planets
IV. HD 196885, a close binary star with a 3.7-year planet
1
Departamento de Física da Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal e-mail: correia@ua.pt
2
Observatoire de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland
3
Laboratoire d'Astrophysique de Grenoble, Université Joseph Fourier, BP 53, 38041 Grenoble Cedex 9, France
4
European Southern Observatory, Casilla 19001, Santiago 19, Chile
5
Laboratoire d'Astrophysique de Marseille, Traverse du Siphon BP 8, 13376 Marseille Cedex 12, France
6
Centro de Astrofísica da Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal
Received:
23
October
2007
Accepted:
28
November
2007
Aims.We aim to significantly increase the number of detected extra-solar planets in a magnitude-limited sample to improve our knowledge of their orbital element distributions and thus obtain better constraints for planet-formation models.
Methods.Radial-velocity data were taken at Haute-Provence Observatory (OHP, France) with the ELODIE echelle spectrograph.
Results.We report the presence of a planet orbiting HD 196885 A,
with an orbital period of 1349 days. This star was previously suggested to host a
-day planet, but we cannot confirm its existence. We also
detect the presence of a stellar companion, HD 196885 B, and give
some constraints on its orbit.
Key words: stars: individual: HD 196885 A / stars: individual: HD 196885 B / stars: binaries: visual / stars: planetary systems / techniques: radial velocities / methods: observational
© ESO, 2008
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