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The merger-driven evolution of massive early-type galaxies

Published online by Cambridge University Press:  29 March 2021

Carlo Cannarozzo Open the ORCID record for Carlo Cannarozzo [Opens in a new window] ,
Carlo Nipoti ,
Alessandro Sonnenfeld ,
Alexie Leauthaud ,
Song Huang ,
Benedikt Diemer  and
Grecco Oyarzún
Carlo Cannarozzo
Affiliation:
Dipartimento di Fisica e Astronomia, Alma Mater Studiorum Università di Bologna, Via Piero Gobetti 93/2, I-40129 Bologna, Italy email: carlo.cannarozzo3@unibo.it INAF - Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, I-40129 Bologna, Italy
Carlo Nipoti
Affiliation:
Dipartimento di Fisica e Astronomia, Alma Mater Studiorum Università di Bologna, Via Piero Gobetti 93/2, I-40129 Bologna, Italy email: carlo.cannarozzo3@unibo.it
Alessandro Sonnenfeld
Affiliation:
Leiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, The Netherlands
Alexie Leauthaud
Affiliation:
Department of Astronomy and Astrophysics, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95064 USA
Song Huang
Affiliation:
Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USA
Benedikt Diemer
Affiliation:
NHFP Einstein Fellow, Department of Astronomy, University of Maryland, College Park, MD 20742, USA
Grecco Oyarzún
Affiliation:
Department of Astronomy and Astrophysics, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95064 USA
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Abstract

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The evolution of the structural and kinematic properties of early-type galaxies (ETGs), their scaling relations, as well as their stellar metallicity and age contain precious information on the assembly history of these systems. We present results on the evolution of the stellar mass-velocity dispersion relation of ETGs, focusing in particular on the effects of some selection criteria used to define ETGs. We also try to shed light on the role that in-situ and ex-situ stellar populations have in massive ETGs, providing a possible explanation of the observed metallicity distributions.

Keywords

Galaxies: elliptical and lenticularcDgalaxies: evolutiongalaxies: formationgalaxies: kinematics and dynamics
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S359: Galaxy Evolution and Feedback across Different Environments , March 2019 , pp. 62 - 66
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

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