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The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. XVIII. Proper-motion Kinematics of Multiple Stellar Populations in the Core Regions of NGC 6352 by Mattia Libralato; Andrea Bellini; Giampaolo Piotto; Domenico Nardiello; Roeland P. van der Marel; Jay Anderson; Luigi R. Bedin; Enrico Vesperini is a Physics and Astronomy article available to read on EtoBox.

What is The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. XVIII. Proper-motion Kinematics of Multiple Stellar Populations in the Core Regions of NGC 6352 about?

We present the analysis of the radial distributions and kinematic properties of the multiple stellar populations (mPOPs) hosted in the globular cluster (GC) NGC6352 as part of the Hubble Space Telescope "UV Legacy Survey of Galactic Globular Clusters" program. NGC6352 is one of the few GCs for which the mPOP tagging in appropriate color-magnitude diagrams is clear in all evolutionary sequences. We computed high-precision stellar proper motions for the stars from the cluster's core out to 75 arcsec (∼1.5 core radii, or ∼0.6 half-light radii). We find that, in the region explored, firstand second-generation stars share the same radial distribution and kinematic properties. Velocity dispersions, anisotropy radial profiles, differential rotation, and level of energy equipartition, all suggest that NGC6352 is probably in an advanced evolutionary stage, and any possible difference in the structural and kinematic properties of its mPOPs have been erased by dynamical processes in the core of the cluster. We also provide an estimate of the mass of blue stragglers and of main-sequence binaries through kinematics alone. In general, in order to build a complete dynamical picture of this and

Who reads The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. XVIII. Proper-motion Kinematics of Multiple Stellar Populations in the Core Regions of NGC 6352?

Author

Mattia Libralato; Andrea Bellini; Giampaolo Piotto; Domenico Nardiello; Roeland P. van der Marel; Jay Anderson; Luigi R. Bedin; Enrico Vesperini

Publisher

University of Chicago Press; American Astronomical Society; Institute of Physics Publishing; IOP Publishing; Oxford University Press (OUP) (ISSN 0004-637X)

Published

2019

Language

EN

Field

Physics and Astronomy (Physical Sciences)