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Galactic consequences of clustered star formation

Published online by Cambridge University Press:  18 January 2010

M. R. Haas  and
P. Anders
M. R. Haas
Affiliation:
Leiden Observatory, Leiden University, Postbus 9513, 2300 RA, Leiden, the Netherlands email: haas@strw.leidenuniv.nl
P. Anders
Affiliation:
Sterrenkundig Instituut, Utrecht University, Princetonplein 5, 3584 CC Utrecht, the Netherlands email: p.anders@uu.nl
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Abstract

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If all stars form in clusters and both stars and clusters follow a power-law distribution which favours the creation of low-mass objects, the numerous low-mass clusters will be deficient in high-mass stars. Therefore, the stellar mass function integrated over the entire galaxy (the integrated galactic initial mass function; IGIMF) will be steeper at the high-mass end than the underlying stellar IMF. We show how the steepness of the IGIMF depends on the sampling method and on the assumptions made regarding the star cluster mass function. We also investigate the O-star content, integrated photometry and chemical enrichment of galaxies that result from several IGIMFs compared to more standard IMFs.

Keywords

stars: luminosity functionmass functiongalaxies: stellar contentgalaxies: abundancesgalaxies: fundamental parametersmethods: statistical
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S266: Star clusters: basic galactic building blocks throughout time and space , August 2009 , pp. 417 - 420
Copyright
Copyright © International Astronomical Union 2010

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