Search and characterization for extrasolar planets in the Northern hemisphere with the SOPHIE consortium

Astronomy and Astrophysics – Astrophysics

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Scientific paper

In November 2006, our consortium started a large program of exoplanet search in the North hemisphere with the new spectrograph SOPHIE at Haute Provence Observatory (OHP). The SOPHIE spectrograph was design and optimized to provide high precision radial velocity measurements to carry out systematic searches for exoplanets. The SOPHIE consortium, which gathers 23 members from Paris, Geneva, Grenoble and Marseille exoplanet teams, takes in charge a large program to search and study exoplanets. Our objectives are to characterize the zoo of exoplanets and to bring strong constraints on their processes of formation and evolution using the radial velocity techniques. Five sub-programs are carried at once: 1) very low-mass planets; 2) hot-Jupiters; 3) planets around very low-mass stars; 4) planets around early-type stars; 5) very long-period planets. The status of these sub-programs and first results of our consortium are presented.

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