0000000000853141

AUTHOR

Enrico Maiorca

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The Gaia-ESO Survey: Chromospheric emission, accretion properties, and rotation in gamma Velorum and Chamaeleon

2015

Aims: One of the goals of the Gaia-ESO Survey (GES), which is conducted with FLAMES at the VLT, is the census and the characterization of the low-mass members of very young clusters and associations. We conduct a comparative study of the main properties of the sources belonging to γ Velorum (γ Vel) and Chamaeleon I (Cha I) young associations, focusing on their rotation, chromospheric radiative losses, and accretion. Methods: We used the fundamental parameters (effective temperature, surface gravity, lithium abundance, and radial velocity) delivered by the GES consortium in the first internal data release to select the members of γ Vel and Cha I among the UVES and GIRAFFE spectroscopic obser…

Astrofísicastars: chromospheresAstrophysics::High Energy Astrophysical PhenomenaAstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsRotationStars: chromosphereOpen clusters and associations: individual:γVelorumstars: low-massStars: low-maAstrophysics::Solar and Stellar AstrophysicsOpen clusters and associations: individual: Chamaeleon Iopen clusters and associations: individual: γ VelorumQCAstrophysics::Galaxy AstrophysicsQBLine (formation)PhysicsAccretion (meteorology)stars: chromospheres ; stars: low-mass; open clusters and associations: individual: γ VelorumDiagramStars: rotationSpectral densityAstronomy and AstrophysicsAstronomy and AstrophysicStarsDistribution (mathematics)Astrophysics - Solar and Stellar AstrophysicsSpace and Planetary ScienceChamaeleonStars: pre-main sequenceAstrophysics::Earth and Planetary AstrophysicsOpen clusters and associations: individual: Chamaeleon I; Open clusters and associations: individual:γVelorum; Stars: chromospheres; Stars: low-mass; Stars: pre-main sequence; Stars: rotation
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