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arXiv · 0711.3343

The ELODIE survey for northern extra-solar planets IV. HD196885, a close binary star with a 3.7-year planet

A. C. M. Correia·S. Udry·M. Mayor·A. Eggenberger·D. Naef·J. -L. Beuzit·C. Perrier·D. Queloz·J. -P. Sivan·F. Pepe·N. C. Santos·D. Ségransan
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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.

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A. C. M. Correia, S. Udry, M. Mayor, A. Eggenberger, D. Naef, J. -L. Beuzit, C. Perrier, D. Queloz, J. -P. Sivan, F. Pepe, N. C. Santos, D. Ségransan. 2007-11-21. The ELODIE survey for northern extra-solar planets IV. HD196885, a close binary star with a 3.7-year planet. https://doi.org/10.1051/0004-6361:20078908

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