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Observational Evidence of Multiple Stellar Populations in Globular Clusters

Published online by Cambridge University Press:  01 September 2007

Giampaolo Piotto
Giampaolo Piotto*
Affiliation:
Dipartimento di Astronomia, Università di Padova, vicolo dell'Osservatorio, 2, I-35122, Padova, Italy email: giampaolo.piotto@unipd.it
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Abstract

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An increasing number of photometric observations of multiple stellar populations in Galactic globular clusters is seriously challenging the paradigm of GCs hosting single, simple stellar populations. These multiple populations manifest themselves in a split of different evolutionary sequences as observed in the cluster color-magnitude diagrams. In this paper we will summarize the observational scenario.

Keywords

Globular ClustersStellar PopulationsPhotometryAstrometry

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