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Titre du document / Document title

AGB phase transition in globular clusters: A tool for dating starbursts

Auteur(s) / Author(s)

MARASTON Claudia ; KISSLER-PATIG Markus ; BRODIE Jean ; BARMBY Pauline ; HUCHRA John ;

Résumé / Abstract

A new method to detect and study young star clusters is presented. This is based on the knowledge that the light of stellar populations with ages between ∼ 200 Myr and ∼ 1÷2 Gyr is dominated by very red, bright AGB stars. Star clusters undergoing this so-called 'AGB phase transition' are featured by very red V-K colours, like those of Magellanic Clouds clusters, while optical colours like B-V remain blue typical for young populations. The best channel for detecting star clusters in this age range is therefore the near IR. From the theoretical side, SSP models including properly the contribution of the bright AGB are required (Maraston, 1998). Using this strategy, we succesfully detected the AGB phase transition among the clusters of the merger remnant galaxy NGC 7252 (see Maraston et al., 2001).

Revue / Journal Title

Astrophysics and space science    ISSN  0004-640X   CODEN APSSBE 

Source / Source

2002, vol. 281, no1-2, pp. 137-138 [2 page(s) (article)]

Langue / Language


Editeur / Publisher

Kluwer, Dordrecht, PAYS-BAS  (1968) (Revue)

Localisation / Location

INIST-CNRS, Cote INIST : 13702, 35400010434919.0200

Nº notice refdoc (ud4) : 13769719

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