SCYON Abstract

Received on February 13 2018

The emergence of the galactic stellar mass function from a non-universal IMF in clusters

AuthorsS. Dib (1,2) and S. Basu (3)
Affiliation(1) Instituto de Astronomia y Ciencias Planetarias, Universidad de Atacama, Copiapo, Chile
(2) Niels Bohr International Academy, Niels Bohr Institute, Copenhagen, Denmark
(3) University of Western Ontario, London, Canada
Accepted byAstronomy & Astrophysics


We investigate how a single generation galactic mass function (SGMF) depends on the existence of variations in the initial stellar mass functions (IMF) of stellar clusters. We show that cluster-to-cluster variations of the IMF lead to a multicomponent 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.