Evidence for Sub-Populations in Globular Clusters: Their Properties and Relationship with Cluster Properties

Cassisi, Santi; Bragaglia, Angela; Gratton, Raffaele; Milone, Antonino; Piotto, Giampaolo; Renzini, Alvio
Referencia bibliográfica

The Messenger, vol. 134 supplement, p. 13-17

Fecha de publicación:
12
2008
Número de autores
6
Número de autores del IAC
0
Número de citas
2
Número de citas referidas
2
Descripción
An increasing number of both photometric and spectroscopic observations over the last decade have shown the existence of distinct sub-populations in some Galactic globular clusters. This evidence severely challenges the paradigm of globular clusters as the prototypes of single, simple stellar populations. In this review, we briefly summarise the main empirical findings collected so far and discuss the properties of these sub-populations and their possible relationship with global cluster properties.