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Stellar populations in CL0048-2942: a galaxy cluster at z ∼ 0.64

Published online by Cambridge University Press:  24 November 2004

M. Serote Roos ,
C. Lobo ,
F. Durret ,
A. Iovino  and
I. Márquez
M. Serote Roos
Affiliation:
Centro de Astronomia e Astrofísica da Universidade de Lisboa, Tapada da Ajuda, 1349-018 Lisboa, Portugal email: [email protected]
C. Lobo
Affiliation:
Centro de Astrofísica & Departamento de Matemática Aplicada, Universidade do Porto, 4150-762 Porto, Portugal email: [email protected]
F. Durret
Affiliation:
Institut d'Astrophysique de Paris, 98bis Bd. Arago, 75014 Paris, France email: [email protected]
A. Iovino
Affiliation:
Osservatorio Astronomico di Brera, via Brera 28, 20121 Milano, Italy email: [email protected]
I. Márquez
Affiliation:
Instituto de Astrofísica de Andalucía (CSIC), Camino Bajo de Huétor 24, 18008 Granada, Spain email: [email protected]
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Abstract

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We present and discuss results concerning a study of stellar populations in the galaxies belonging to CL 0048-2942, a cluster at intermediate redshift (z = 0.64), and to the field. This study gives insight on the evolutionary stage of the cluster galaxies at different radial distances from the cluster centre. We find a population gradient within the cluster: centre galaxies host older stars whereas galaxies located towards the cluster outskirts are predominantly made of less evolved stars. This effect is even more pronounced as we move outside the cluster, into the field. This is interpreted as star formation being more intense in the field, or rather, suppressed within the cluster, particulary as we move towards its centre.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
POSTERS
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS222 , March 2004 , pp. 207 - 208
Copyright
© 2004 International Astronomical Union