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Dynamical evolution of star clusters with top-heavy IMF

Authors :
Akram Hasani Zonoozi
Hosein Haghi
Ghasem Safaei
Pavel Kroupa
Source :
Proceedings of the International Astronomical Union. 14:447-450
Publication Year :
2019
Publisher :
Cambridge University Press (CUP), 2019.

Abstract

Several observational and theoretical studies suggest that the initial mass function (IMF) slope for massive stars in globular clusters (GCs) depends on the initial cloud density and metallicity, such that the IMF becomes increasingly top-heavy with decreasing metallicity and increasing the gas density of the forming object. Using N-body simulations of GCs starting with a top-heavy IMF and undergo early gas expulsion within a Milky Way-like potential, we show how such a cluster would evolve. By varying the degree of top-heaviness, we calculate the dissolution time and the minimum cluster mass needed for the cluster to survive after 12 Gyr of evolution.<br />Comment: 4 pages, 2 figures, Accepted for publication in Proceedings of the International Astronomical Union

Details

ISSN :
17439221 and 17439213
Volume :
14
Database :
OpenAIRE
Journal :
Proceedings of the International Astronomical Union
Accession number :
edsair.doi.dedup.....354a2fdc48753b263242d45437caf4ea
Full Text :
https://doi.org/10.1017/s174392131900704x