Physics – Optics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..318..166d&link_type=abstract
In Spectroscopically and Spatially Resolving the Components of the Close Binary Stars, Proceedings of the Workshop held 20-24 Oc
Physics
Optics
31
Scientific paper
We present the results and perspectives of a large program on the stellar physics and the formation of very low mass stars. Using adaptive optics images (from ADONIS and NAOS at ESO and PUE'O at CFHT), infrared interferometric data (from VINCI at ESO) and accurate radial velocity (from ELODIE at OHP, FEROS and HARPS at ESO) for the M dwarfs of the solar neigbhourhood, we have obtained very accurate mass-luminosity and mass-radius relation, and compare them to the prediction of recent stellar structure models. We also present multiplicity statistics of M dwarfs (binary fraction, period and mass ration distribution), which are crucial constraints for stellar formation scenarii. Finally we discuss our results and perspectives on extrasolar planets around M dwarfs.
Beuzit Jean Luc
Bonfils Xavier
Delfosse Xavier
Forveille Thierry
Marchal Loris
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