The ELODIE survey for northern extra-solar planets. IV. HD 196885, a close binary star with a 3.7-year planet
Abstract
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 386 -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.
- Publication:
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Astronomy and Astrophysics
- Pub Date:
- February 2008
- DOI:
- 10.1051/0004-6361:20078908
- Bibcode:
- 2008A&A...479..271C
- Keywords:
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- stars: individual: HD& 196885 A;
- stars: individual:;
- HD 196885 B;
- stars: binaries: visual;
- stars: planetary systems;
- techniques: radial velocities;
- methods: observational