The present day mass function in the central region of the Arches cluster

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dc.creatorZwart, Simon Portegies
dc.creatorGaburov, Evghenii
dc.creatorChen, Hui-Chen
dc.creatorGürkan, M. Atakan
dc.date2007-02-26
dc.date.accessioned2026-07-07T10:36:53Z
dc.date.available2026-07-07T10:36:53Z
dc.descriptionWe study the evolution of the mass function in young and dense star clusters by means of direct N-body simulations. Our main aim is to explain the recent observations of the relatively flat mass function observed near the centre of the Arches star cluster. In this region, the power law index of the mass function for stars more massive than about 5-6 solar mass, is larger than the Salpeter value by about unity; whereas further out, and for the lower mass stars, the mass function resembles the Salpeter distribution. We show that the peculiarities in the Arches mass function can be explained satisfactorily without primordial mass segregation. We draw two conclusions from our simulations: 1) The Arches initial mass function is consistent with a Salpeter slope down to ~1 solar mass, 2) The cluster is about half way towards core collapse. The cores of other star clusters with characteristics similar to those of the Arches are expected to show similar flattening in the mass functions for the high mass (>5 solar mass) stars.
dc.description6 pages with 6 figures and 1 table. Submitted to the letters section of MNRAS. Incorporates changes following suggestions by the referee
dc.identifierhttps://arxiv.org/abs/astro-ph/0702693
dc.identifierhttp://arxiv.org/abs/astro-ph/0702693
dc.identifierMon.Not.Roy.Astron.Soc.Lett.378:L29-L33,2007
dc.identifierdoi:10.1111/j.1745-3933.2007.00313.x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/180204
dc.subjectAstrophysics
dc.titleThe present day mass function in the central region of the Arches cluster
dc.typetext

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