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The Mixture of Stellar Populations in M 32

Published online by Cambridge University Press:  11 July 2011

M. Koleva ,
Ph. Prugniel ,
I. Vauglin  and
P.R.T. Coelho
P.R.T. Coelho*
Affiliation:
Núcleo de Astrofísica Teórica da Univ. Cruzeiro do Sul, Rua Galvão Bueno, 868, sala 105, 01506-000, São Paulo, Brazil
*
e-mail: [email protected]
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Abstract

We studied the stellar population in M 32 by means of full spectral fitting. Three different galactic radii were analysed, from the nuclear region out to 2 arcmin from the centre. As a main result we propose that an ancient and an intermediate-age population co-exist in M 32, and that the balance between these two populations change between the nucleus and outside one effective radius in the sense that the contribution from the intermediate population is larger at the nuclear region. We retrieve a smaller signal of a young population at all radii whose origin is unclear.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 48: CRAL-2010 A Universe of Dwarf Galaxies , 2011 , pp. 269 - 270
Copyright
© EAS, EDP Sciences, 2011

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