文章基本信息

标题：The emergence of the galactic stellar mass function from a non-universal IMF in clusters
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作者：Sami Dib ; Shantanu Basu
期刊名称：Astronomy & Astrophysics
印刷版ISSN：0004-6361
电子版ISSN：1432-0746
出版年度：2018
卷号：614
DOI：10.1051/0004-6361/201732490
语种：English
出版社：EDP Sciences
摘要：We investigate the dependence of a single-generation galactic mass function (SGMF) on variations in the initial stellar mass functions (IMF) of stellar clusters. We show that cluster-to-cluster variations of the IMF lead to a multi-component SGMF where each component in a given mass range can be described by a distinct power-law function. We also show that a dispersion of ≈0.3 M⊙in the characteristic mass of the IMF, as observed for young Galactic clusters, leads to a low-mass slope of the SGMF that matches the observed Galactic stellar mass function even when the IMFs in the low-mass end of individual clusters are much steeper.
关键词：Key wordsenstars: luminosity function, mass functiongalaxies: clusters: generalgalaxies: stellar contentopen clusters and associations: general