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The star formation histories of fossil group galaxies

Published online by Cambridge University Press:  13 April 2010

Ignacio G. de la Rosa ,
Robert N. Proctor ,
Claudia Mendes de Oliveira ,
Duncan A. Forbes ,
Roberto Cid Fernandes  and
Abilio Mateus
Ignacio G. de la Rosa
Affiliation:
Instituto de Astrofísica de Canarias, Spain email: irosa@iac.es
Robert N. Proctor
Affiliation:
Instituto Astronômico e Geofísico-USP, Brazil
Claudia Mendes de Oliveira
Affiliation:
Instituto Astronômico e Geofísico-USP, Brazil
Duncan A. Forbes
Affiliation:
Centre for Astrophysics & Supercomputing-SU, Australia
Roberto Cid Fernandes
Affiliation:
Universidade Federal de Santa Catarina, Brazil
Abilio Mateus
Affiliation:
Universidade Federal de Santa Catarina, Brazil
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Abstract

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A comparison is carried out among the star formation histories of early-type galaxies in fossil groups, clusters and low density environments. Although they show similar evolutionary histories, a significant fraction of the fossils are younger than their counterparts, suggesting that they can be precursors of the isolated ETG galaxies.

Keywords

galaxies: stellar contentelliptical and lenticularcDevolution

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