Gclusters :: Bibliographic item "gc496"

Release 11.12 ("Hergest Ridge")

Gclusters :: Bibliographic item "gc496"

Article ID: gc496

Author Miholics, Meghan; Webb, Jeremy J.; Sills, Alison

Title The dynamics of multiple populations in the globular cluster NGC 6362
Journal MNRAS, Volume 454, Issue 2, p.2166-2172
Year of publication 2015 (on gclusters from 2015-11-25 09:50:00 )

Abstract We investigate how the Milky Way tidal field can affect the spatial mixing of multiple stellar populations in the globular cluster NGC 6362. We use N-body simulations of multiple-population clusters on the orbit of this cluster around the Milky Way (...) We show that the high mass-loss rate experienced on this cluster's orbit significantly accelerates the spatial mixing of the two populations expected from two-body relaxation. We also find that for a range of initial second-population concentrations, cluster masses, tidal filling factors and fraction of first-population stars, a cluster with two populations should be mixed when it has lost 70-80 per cent of its initial mass. These results fully account for the complete spatial mixing of NGC 6362, since, based on its shallow present-day mass function, independent studies estimate that the cluster has lost 85 per cent of its initial mass.

Tags NGC 6362
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Article ID: gc496
Author	Miholics, Meghan; Webb, Jeremy J.; Sills, Alison
Title	The dynamics of multiple populations in the globular cluster NGC 6362
Journal	MNRAS, Volume 454, Issue 2, p.2166-2172
Year of publication	2015 (on gclusters from 2015-11-25 09:50:00 )
Abstract	We investigate how the Milky Way tidal field can affect the spatial mixing of multiple stellar populations in the globular cluster NGC 6362. We use N-body simulations of multiple-population clusters on the orbit of this cluster around the Milky Way (...) We show that the high mass-loss rate experienced on this cluster's orbit significantly accelerates the spatial mixing of the two populations expected from two-body relaxation. We also find that for a range of initial second-population concentrations, cluster masses, tidal filling factors and fraction of first-population stars, a cluster with two populations should be mixed when it has lost 70-80 per cent of its initial mass. These results fully account for the complete spatial mixing of NGC 6362, since, based on its shallow present-day mass function, independent studies estimate that the cluster has lost 85 per cent of its initial mass.
Tags	NGC 6362