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The Quest for Relics: Massive compact galaxies in the local Universe

Published online by Cambridge University Press:  29 March 2021

F. S. Lohmann Open the ORCID record for F. S. Lohmann [Opens in a new window] ,
A. Schnorr-Müller Open the ORCID record for A. Schnorr-Müller [Opens in a new window] ,
M. Trevisan ,
R. Riffel ,
N. Mallmann ,
Ana L. Chies-Santos  and
C. Furlanetto
F. S. Lohmann
Affiliation:
Departamento de Astronomia, Universidade Federal do Rio Grande do Sul, PO Box 15051, 91501-970 Porto Alegre, Brazil emails: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
A. Schnorr-Müller
Affiliation:
Departamento de Astronomia, Universidade Federal do Rio Grande do Sul, PO Box 15051, 91501-970 Porto Alegre, Brazil emails: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
M. Trevisan
Affiliation:
Departamento de Astronomia, Universidade Federal do Rio Grande do Sul, PO Box 15051, 91501-970 Porto Alegre, Brazil emails: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
R. Riffel
Affiliation:
Departamento de Astronomia, Universidade Federal do Rio Grande do Sul, PO Box 15051, 91501-970 Porto Alegre, Brazil emails: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
N. Mallmann
Affiliation:
Departamento de Astronomia, Universidade Federal do Rio Grande do Sul, PO Box 15051, 91501-970 Porto Alegre, Brazil emails: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
Ana L. Chies-Santos
Affiliation:
Departamento de Astronomia, Universidade Federal do Rio Grande do Sul, PO Box 15051, 91501-970 Porto Alegre, Brazil emails: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
C. Furlanetto
Affiliation:
Departamento de Astronomia, Universidade Federal do Rio Grande do Sul, PO Box 15051, 91501-970 Porto Alegre, Brazil emails: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
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Abstract

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Observations at high redshift reveal that a population of massive, quiescent galaxies (called red nuggets) already existed 10 Gyr ago. These objects undergo a significant size evolution over time, likely due to minor mergers. In this work we present an analysis of local massive compact galaxies to assess if their properties are consistent with what is expected for unevolved red nuggets (relic galaxies). Using integral field spectroscopy (IFS) data from the MaNGA survey from the Sloan Digital Sky Survey (SDSS), we characterized the kinematics and properties of stellar populations of massive compact galaxies, and find that these objects exhibit, on average, a higher rotational support than a control sample of average sized early-type galaxies. This is in agreement with a scenario in which these objects have a quiet accretion history, rendering them candidates for relic galaxies.

Keywords

Galaxies: 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. 441 - 443
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

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