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Integrated Properties of Mass Segregated Star Clusters

Published online by Cambridge University Press:  01 September 2007

E. Gaburov  and
M. Gieles
E. Gaburov
Affiliation:
Sterrenkundig Instituut “Anton Pannekoek”, University of [email protected] Section Computational Science, University of Amsterdam
M. Gieles
Affiliation:
European Southern Observatory, Casilla19001, Santiago 19, Chile email: [email protected]
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Abstract

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In this contribution we study integrated properties of dynamically segregated star clusters. The observed core radii of segregated clusters can be 50% smaller than the “true” core radius. In addition, the measured radius in the red filters is smaller than those measured in blue filters. However, these difference are small (≲10%), making it observationally challenging to detect mass segregation in extra-galactic clusters based on such a comparison. Our results follow naturally from the fact that in nearly all filters most of the light comes from the most massive stars. Therefore, the observed surface brightness profile is dominated by stars of similar mass, which are centrally concentrated and have a similar spatial distribution.

Keywords

galaxies: star clusters
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S246: Dynamical Evolution of Dense Stellar Systems , September 2007 , pp. 193 - 194
Copyright
Copyright © International Astronomical Union 2008

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