Journal article
Origin and dynamical evolution of young mass-segregated clusters
Astrophysics and space science, v 324(2-4), pp 277-282
01 Dec 2009
Abstract
A significant degree of mass segregation inconsistent with the effects of standard two-body relaxation has been observed in a number of young star clusters. In this paper we present the results of a survey of N-body simulations aimed at exploring the origin and the dynamical evolution of young mass-segregated star clusters. Our simulations show that large segregated clusters can form from the merger of small clumps that are either initially segregated or in which segregation is produced before the merger is complete; the large cluster produced at the end of the merger process inherits the progenitor clumps' segregation. We show that, in a young mass-segregated cluster, the effect of early mass loss associated with stellar evolution is, in general, more destructive than for an unsegregated cluster with the same density profile, and leads to shorter lifetimes, a faster initial evolution towards less-concentrated structure and a faster flattening of the stellar initial mass function.
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Details
- Title
- Origin and dynamical evolution of young mass-segregated clusters
- Creators
- Enrico Vesperini - Drexel UniversitySteve McMillan - Drexel UniversitySimon Portegies Zwart - Univ Amsterdam, Astron Inst Anton Pannekoek, Amsterdam, Netherlands
- Publication Details
- Astrophysics and space science, v 324(2-4), pp 277-282
- Publisher
- Springer Nature
- Number of pages
- 6
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000272018700034
- Scopus ID
- 2-s2.0-84876728714
- Other Identifier
- 991019170491604721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Astronomy & Astrophysics