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| Paper: |
M Dwarf Binaries: Results from Accurate Radial Velocities and High Angular Resolution Observations |
| Volume: |
318, Spectroscopically and Spatially Resolving the Components of Close Binary Stars |
| Page: |
166 |
| Authors: |
Delfosse, X.; Beuzit, J.-L.; Marchal, L.; Bonfils, X.; Perrier, C.; Segransan, D.; Udry, S.; Mayor, M.; Forveille, T. |
| Abstract: |
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. |
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