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Development of the Red Sequence in Galaxy Clusters

Published online by Cambridge University Press:  03 June 2010

Noelia Jiménez ,
Sofía A. Cora ,
Analía Smith Castelli  and
Lilia P. Bassino
Noelia Jiménez
Affiliation:
Facultad de Ciencias Astronómicas y Geofísicas de La Universidad Nacional de La Plata and Instituto de Astrofísica de La Plata (CCT La Plata, CONICET, UNLP), Argentina Email: [email protected]
Sofía A. Cora
Affiliation:
Facultad de Ciencias Astronómicas y Geofísicas de La Universidad Nacional de La Plata and Instituto de Astrofísica de La Plata (CCT La Plata, CONICET, UNLP), Argentina Email: [email protected]
Analía Smith Castelli
Affiliation:
Facultad de Ciencias Astronómicas y Geofísicas de La Universidad Nacional de La Plata and Instituto de Astrofísica de La Plata (CCT La Plata, CONICET, UNLP), Argentina Email: [email protected]
Lilia P. Bassino
Affiliation:
Facultad de Ciencias Astronómicas y Geofísicas de La Universidad Nacional de La Plata and Instituto de Astrofísica de La Plata (CCT La Plata, CONICET, UNLP), Argentina Email: [email protected]
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Abstract

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We investigate the origin of the color-magnitude relation (CMR) observed in cluster galaxies by using a combination of a cosmological N-body simulation of a cluster of galaxies and a semi-analytic model of galaxy formation. The departure of galaxies in the bright end of the CMR with respect to the trend defined by less luminous galaxies could be explained by the influence of minor mergers.

Keywords

galaxies: clustersgalaxies: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S267: Co-Evolution of Central Black Holes and Galaxies , August 2009 , pp. 460
Copyright
Copyright © International Astronomical Union 2010

References

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Skelton, R. E., Bell, E. F., & Somerville, R. S. 2009, ApJ, 699, L9CrossRefGoogle Scholar
Smith Castelli, A., et al. 2008, MNRAS, 386, 2311CrossRefGoogle Scholar