Laboratoire d’Astrophysique de Marseille (LAM), Francia
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 exoplanet 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- cLaughlin 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 upgrade performed on SOPHIE on June 2011, 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.
Este coloquio se llevará a cabo el Miércoles 28/03 a las 14:00 hs en el aula del edificio del IAFE, ubicado en Ciudad Universitaria- UBA.