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Early-type galaxy formation: understanding the role of the environment

Published online by Cambridge University Press:  09 February 2015

Ricardo Demarco ,
Alessandro Rettura ,
Chris Lidman ,
Julie Nantais ,
Yara Jaffe  and
Piero Rosati
Ricardo Demarco
Affiliation:
Department of Astronomy, Universidad de Concepción, Casilla 160-C, Concepción, Chile email: rdemarco@astro-udec.cl
Alessandro Rettura
Affiliation:
Astronomy Department, California Institute of Technology, 1200 East California Blvd, PasadenaCA91125, U.S.A.
Chris Lidman
Affiliation:
Australian Astronomical Observatory, 105 Delhi Rd, North Ryde NSW 2113, Australia
Julie Nantais
Affiliation:
Department of Astronomy, Universidad de Concepción, Casilla 160-C, Concepción, Chile email: rdemarco@astro-udec.cl
Yara Jaffe
Affiliation:
Department of Astronomy, Universidad de Concepción, Casilla 160-C, Concepción, Chile email: rdemarco@astro-udec.cl
Piero Rosati
Affiliation:
Department of Physics and Earth Science, University of Ferrara, Via G.Saragat, 21 - 44122Ferrara, Italy
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Abstract

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One of the most characteristic features of galaxy clusters is the so-called “red sequence” (RS) of early-type galaxies. Since these galaxies are, in general, devoid of gas and dust, their red colors are mainly a consequence of their passive nature. However, the physical mechanisms responsible for quenching their star formation, thus originating the RS, are poorly understood. Environmental effects should play a significant role in the formation of the RS by transforming the observed galaxy properties from late to early-type ones. In this respect, we have initiated a KMOS program aimed at studying the kinematical structure of cluster galaxies at 0.8 < z < 1.7 in an effort to disentangle the physical mechanisms responsible for cluster galaxy evolution and the formation of the RS.

Keywords

galaxies: early-type - galaxies: formation - galaxies: clusters of galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S309: Galaxies in 3D across the Universe , July 2014 , pp. 291 - 292
Copyright
Copyright © International Astronomical Union 2015 

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