Abstract / Description of output
The observational characterization of the internal kinematics of
Galactic globular clusters will soon reach an unprecedented level of
richness, thanks to the synergy between the astrometric data provided by
Gaia and HST, and a number of ESO/VLT spectroscopic programs. Such a
wealth of information on the three-dimensional velocity space of star
clusters, offers the unique opportunity to address a number of open
questions on the phase space evolution of collisional stellar
systems.Driven by these motivations, I will present some highlighted
results of a large survey of N-body simulations aimed at exploring the
long-term dynamical evolution of the kinematical properties of tidally
limited star clusters. First, I will discuss of the evolution of the
anisotropy in velocity space, with particular attention to the
dependence on the cluster initial structural properties and dynamical
history. I will then focus on the implications of cluster dynamical
evolution and loss of stars on its internal rotation. Such an enriched
picture of the kinematical properties of star clusters offers a solid
bedrock for addressing a range of exciting new questions related to the
dynamics of multiple stellar populations in globular clusters. In this
context, I will illustrate some results on the internal rotational
velocity profiles and the evolution of the differences in the rotation
of different stellar populations.
| Original language | English |
|---|---|
| Publication status | Published - 31 May 2016 |