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A semi-empirical study of the mass distribution of horizontal branch stars in M 3 (NGC 5272)

2008; EDP Sciences; Volume: 487; Issue: 1 Linguagem: Inglês

10.1051/0004-6361

ISSN

1432-0746

Autores

A. A. R. Valcarce, M. Catelan,

Tópico(s)

Astronomy and Astrophysical Research

Resumo

Aims. Horizontal branch (HB) stars in globular clusters offer us a probe of the mass loss mechanisms taking place in red giants. For M 3 (NGC 5272), in particular, different shapes for the HB mass distribution have been suggested in the literature, including Gaussian and sharply bimodal alternatives. Here, we study the mass distribution of HB stars in M 3 by comparing evolutionary tracks for a suitable chemical composition with photometric observations.

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