Résumé / Abstract Seminaire_IAP
« Recent results in exoplanetology with the SOPHIE spectrograph  »

Rodrigo F. Díaz

SOPHIE is one of the most precise radial-velocity instruments to search for and characterize extrasolar planets. It is a high-resolution spectrograph installed in the 1.93-m telescope at the Observatoire de Haute-Provence, stabilised in pressure and temperature, which results in a highly-stable instrument, needed for exoplanets. Besides the varied projects of planet search carried out with this instrument, SOPHIE is a key element in the follow-up of planet candidates provided by different photometric transit surveys, as SuperWASP, CoRoT, and more recently, Kepler. Moreover, it is also well-suited to further characterize the detected planets, by means of the Rossiter-McLaughlin effect, for example. In the first part of the talk I will discuss some of the most important results obtained with SOPHIE, and I will then focus on the recent detection of various objects in the boundary between brown dwarves and planets. Finally, I will comment upgrade performed on SOPHIE this summer, that has increased the instrument's stability by a factor of 6, and has opened the door to the detection of Neptune-mass and Super-Earth planets.
vendredi 16 décembre 2011 - 11:00
Amphithéâtre Henri Mineur, Institut d'Astrophysique de Paris
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