| Issue |
A&A
Volume 523, November-December 2010
|
|
|---|---|---|
| Article Number | A88 | |
| Number of page(s) | 9 | |
| Section | Planets and planetary systems | |
| DOI | https://doi.org/10.1051/0004-6361/201014909 | |
| Published online | 18 November 2010 | |
The SOPHIE search for northern extrasolar planets
III. A Jupiter-mass companion around HD 109246⋆,⋆⋆
1 Institut d’Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie 98bis Bd Arago 75014 Paris France
e-mail: iboisse@iap.fr
2 Université Joseph Fourier – Grenoble 1 / CNRS, Laboratoire d’Astrophysique de Grenoble (UMR 5571), BP 53, 38041 Grenoble Cedex 9, France
3 Centro de Astrofísica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal
4 Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland
5 Observatoire de Haute Provence, CNRS/OAMP, 04870 Saint-Michel l’ Observatoire, France
6 European Southern Observatory, Casilla 19001, Santiago 19, Chile
7 Laboratoire d’Astrophysique de Marseille, Université de Provence & CNRS, 38 rue Frédéric Joliot-Curie, 13388 Marseille cedex 13, France
8 School of Physics, University of Exeter, Exeter EX4 4QL, UK
Received: 30 April 2010
Accepted: 24 June 2010
We report the detection of a Jupiter-mass planet discovered with the SOPHIE spectrograph mounted on the 1.93-m telescope at the Haute-Provence Observatory. The new planet orbits HD 109246, a G0V star slightly more metallic than the Sun. HD 109246b has a minimum mass of 0.77 MJup, an orbital period of 68 days, and an eccentricity of 0.12. It is placed in a sparsely populated region of the period distribution of extrasolar planets. We also present a correction method for the so-called seeing effect that affects the SOPHIE radial velocities. We complement this discovery announcement with a description of some calibrations that are implemented in the SOPHIE automatic reduction pipeline. These calibrations allow the derivation of the photon-noise radial velocity uncertainty and some useful stellar properties (vsini, [Fe/H], 
) directly from the SOPHIE data.
Key words: planetary systems / techniques: radial velocities / stars: individual: HD 109246 / stars: activity / stars: abundances
Based on observations made with the SOPHIE spectrograph on the 1.93-m telescope at Observatoire de Haute-Provence (CNRS/OAMP), France (program 07A.PNP.CONS).
RV tables (Tables C.1 and C.2) are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/523/A88
© ESO, 2010
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