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Observations of the IMF in clusters

Published online by Cambridge University Press:  27 April 2011

Joana Ascenso
Joana Ascenso*
Affiliation:
Centro de Astrofísica da Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal email: jascenso@astro.up.pt
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Abstract

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Stars form from molecular clouds, mostly in clusters with tens to tens of thousands of members, and the mass distribution within these clusters, or the Initial Mass Function, seems to be invariable against many parameters and over a wide range of masses. However, masses are a very difficult quantity to assess, and the precision of our determinations of the IMF is systematically lower than usually quoted. I will discuss the process of determining masses from observations and the type of uncertainties associated with this process.

Keywords

techniques: photometricstars: fundamental parametersstars: luminosity functionmass function(Galaxy:) open clusters and associations: general

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