201 citations · 819 across the 9 of their papers we have counts for
9 papers
PolarBase: a data base of high resolution spectropolarimetric stellar observations
P. Petit, T. Louge, S. Théado +5
PolarBase is an evolving data base that contains all stellar data collected with the ESPaDOnS and NARVAL high-resolution spectropolarimeters, in their reduced form, as soon as they…
A Bcool magnetic snapshot survey of solar-type stars
S. C. Marsden, P. Petit, S. V. Jeffers +20
Stellar magnetic field measurements obtained from spectropolarimetry offer key data for activity and dynamo studies, and we present the results of a major high-resolution spectropo…
The radius and mass of the close solar twin 18 Sco derived from asteroseismology and interferometry
M. Bazot, M. J. Ireland, D. Huber +28
The growing interest in solar twins is motivated by the possibility of comparing them directly to the Sun. To carry on this kind of analysis, we need to know their physical charact…
Estimating the p-mode frequencies of the solar twin 18 Sco
M. Bazot, T. L. Campante, W. J. Chaplin +17
Solar twins have been a focus of attention for more than a decade, because their structure is extremely close to that of the Sun. Today, thanks to high-precision spectrometers, it…
Thermohaline instabilities inside stars: a synthetic study including external turbulence and radiative levitation
Sylvie Vauclair, Sylvie Théado
We have derived a new expression for the thermohaline mixing coefficient in stars, including the effects of radiative levitation and external turbulence, by solving Boussinesq equa…
Metal-rich accretion and thermohaline instabilities in exoplanets-host stars: consequences on the light elements abundances
Sylvie Théado, Sylvie Vauclair
The early evolution of planetary systems is expected to depend on various periods of disk matter accretion onto the central star, which may include the accretion of metal-rich matt…
Detection of a weak surface magnetic field on Sirius A: are all tepid stars magnetic ?
P. Petit, F. Lignières, M. Aurière +8
We aim at a highly sensitive search for weak magnetic fields in main sequence stars of intermediate mass, by scanning classes of stars with no previously reported magnetic members.…
Influence of thermohaline convection on diffusion-induced iron accumulation in A stars
Sylvie Théado, Sylvie Vauclair, Georges Alecian +1
Atomic diffusion may lead to heavy element accumulation inside stars in certain specific layers. Iron accumulation in the Z-bump opacity region has been invoked by several authors…
New light on the driving mechanism in roAp stars. Part I. Effects of metallicity
S. Théado, M. -A. Dupret, A. Noels +1
Observations suggest that a relationship exists between the driving mechanism of roAp star pulsations and the heavy element distribution in these stars. We attempt to study the eff…