期刊
ASTRONOMY & ASTROPHYSICS
卷 523, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201014909
关键词
planetary systems; techniques: radial velocities; stars: individual: HD 109246; stars: activity; stars: abundances
资金
- Swiss National Science Foundation [PA00P2_126150/1]
- European Research Council/European Community
- FCT/MCTES (Portugal)
- POPH/FSE (EC)
- CNES
- [PTDC/CTE-AST/098528/2008]
- [PTDC/CTE-AST/098604/2008]
- Swiss National Science Foundation (SNF) [PA00P2_126150] Funding Source: Swiss National Science Foundation (SNF)
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 M(Jup), 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 (v sin i, [Fe/H], log R'(HK)) directly from the SOPHIE data.
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