Protostars and Planets VI, Heidelberg, July 15-20, 2013
MEMBERSHIP AND DYNAMICS OF THE YOUNG CLUSTER CHAMAELEON I WITH THE GAIA-ESO SURVEY
Sacco, Germano (INAF-Osservatorio Astrofisico di Arcetri)
Spina, Lorenzo (INAF-Osservatorio Astrofisico di Arcetri)
Palla, Francesco (INAF-Osservatorio Astrofisico di Arcetri)
Franciosini, Elena (INAF-Osservatorio Astrofisico di Arcetri)
The Gaia-ESO Survey (GES) will provide radial velocities, rotational broadening and other stellar
parameters of 10^5 Milky Way stars in the ﬁeld and in clusters. One of the main goals of the survey is to
investigate the formation and the evolution of young clusters, by the analysis of their internal kinematic.
We will present the results obtained from the analysis of the GES observations of the
young cluster Chamaeleon I. Speciﬁcally, we will describe a new membership selection based on the
high resolution (R∼20,000) GES spectroscopic data and the analysis of the dynamical properties of
the cluster based on the very accurate (∼0.3 km/s) GES radial velocities.
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