19 citations · 21 across the 2 of their papers we have counts for
8 papers · 1 filter
Magnetic topologies of cool stars
J. -F. Donati, M. M. Jardine, P. Petit +14
Stellar magnetic fields can be investigated using several, very complementary approaches. While conventional spectroscopy is capable of estimating the average magnetic strength of…
Metallicity of M dwarfs I. A photometric calibration and impact on the mass-luminosity relation at the bottom of the main sequence
X. Bonfils, X. Delfosse, S. Udry +3
We obtained high resolution ELODIE and CORALIE spectra for both components of 20 wide visual binaries composed of an F-, G- or K-dwarf primary and an M-dwarf secondary. We analyse…
VINCI / VLTI observations of Main Sequence stars
P. Kervella, F. Thevenin, P. Morel +7
Main Sequence (MS) stars are by far the most numerous class in the Universe. They are often somewhat neglected as they are relatively quiet objects (but exceptions exist), though t…
Accurate masses of very low mass stars: IV Improved mass-luminosity relations
X. Delfosse, T. Forveille, D. Ségransan +4
We present improved visual and near-infrared empirical mass-luminosity relations for very low mass stars (M0.6~\Msol). These relations make use of all stellar masses in this ran…
Accurate masses of very low mass stars: III 16 new or improved masses
D. Ségransan, X. Delfosse, T. Forveille +4
We have obtained adaptive optics images and accurate radial velocities for 7 very low mass systems, in the course of a long term effort to determine accurate masses for very low ma…
New neighbours. I. 13 new companions to nearby M dwarfs
X. Delfosse, T. Forveille, J. -L. Beuzit +3
We present preliminary results of a radial-velocity search for companions to a volume limited sample of M dwarfs. Typical accuracy range between 10m/s for the brighter stars and 70…