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Age and metallicity of Galactic clusters from full spectrum fitting

Published online by Cambridge University Press:  01 December 2006

Mina Koleva ,
Philippe Prugniel ,
Pierre Ocvirk  and
Damien Le Borgne
Mina Koleva*
Affiliation:
Université Lyon 1, Observatoire de Lyon, St. Genis Laval, 69230, France; CNRS UMR 5574 Department of Astronomy, St. Kl. Ohridski University of Sofia, BG-1164 Sofia, Bulgaria
Philippe Prugniel
Affiliation:
Université Lyon 1, Observatoire de Lyon, St. Genis Laval, 69230, France; CNRS UMR 5574 Observatoire de Paris, GEPI, F-75014, France
Pierre Ocvirk
Affiliation:
CEA Saclay/Service d'Astrophysique, Gif-sur-Yvette Cedex, F-91191, France
Damien Le Borgne
Affiliation:
CEA Saclay/Service d'Astrophysique, Gif-sur-Yvette Cedex, F-91191, France
*
†[email protected]
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Abstract

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We are using full spectrum fitting to determine the ages and metallicities of Galactic clusters (M67 and globular clusters). We find that the method is very accurate to measure the metallicity. Blue horizontal branches are well identified as a ‘young’ sub-component, and the age of the ‘old’ component is in fair agreement with CMD determinations.

Keywords

globular clusters: generalgalaxies: star clusterstechniques: spectroscopic
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S241: Stellar Populations as Building Blocks of Galaxies , December 2006 , pp. 185 - 186
Copyright
Copyright © International Astronomical Union 2007

References

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