Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sf2a.conf..402d&link_type=abstract
SF2A-2007: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics held in Grenoble, France, July
Astronomy and Astrophysics
Astrophysics
Scientific paper
The search for extrasolar planets and brown dwarfs (BDs) making use of radial-velocity (RV) techniques has mainly focused on solar or late type stars. We have developed a new RV-measurement method allowing to detect very low mass companions around early-type stars, and we are performing a survey on a volume-limited sample of more than 200 A-F main sequence stars with SOPHIE (OHP, France) and HARPS (ESO, La Silla). This extends the planet and BD formation processes study around stars earlier than F7. We developed simulations of stellar activity (spots) to estimate more quantitatively than previously done the impact of such phenomenon on RV data and other observables (bisector, span, photometry). Based on observations made with the ESO/HARPS spectrograph at the 3.6m telescope, La Silla.
Desort Morgan
Galland Franck
Lagrange Anne Marie
Mayor Marcel
Udry Stephane
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