The colour-magnitude relation of simulated early-type galaxies as a function of their kinematics

Early-type (ET) galaxies (both elliptical and lenticular) define the well-known red sequence or colour-magnitude relation (CMR) in the colour-magnitude diagram (CMD). In this work, we present results of the study of that relation at different redshifts z in cosmological numerical simulations. In par...

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Detalles Bibliográficos
Autores principales: Zenocratti, Lucas José, Smith Castelli, Analía Viviana, De Rossi, M. E., Faifer, Favio Raúl
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Ciencias Astronómicas
galaxies: elliptical and lenticular, cD
galaxies: kinematics and dynamics
cosmology: theory
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/171591
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-171591
record_format dspace
spelling I19-R120-10915-1715912024-10-17T20:04:06Z http://sedici.unlp.edu.ar/handle/10915/171591 The colour-magnitude relation of simulated early-type galaxies as a function of their kinematics Zenocratti, Lucas José Smith Castelli, Analía Viviana De Rossi, M. E. Faifer, Favio Raúl 2021 2024-10-17T15:31:18Z en Ciencias Astronómicas galaxies: elliptical and lenticular, cD galaxies: kinematics and dynamics cosmology: theory Early-type (ET) galaxies (both elliptical and lenticular) define the well-known red sequence or colour-magnitude relation (CMR) in the colour-magnitude diagram (CMD). In this work, we present results of the study of that relation at different redshifts z in cosmological numerical simulations. In particular, we explore its evolution from z = 2 to z = 0, selecting a sample of simulated objects that display similar properties of observed ET galaxies in the Local Universe. The average rotation speed of those objects is used to determine if their stellar kinematics correlates with their position in the diagram, as well as with other properties. Evolution of fast- and slow-rotators over the CMD at different redshifts and changes in their kinematical behaviour is also analysed. Results shown here are part of a project aimed at identifying the processes that originated the CMR at z = 0, performing a comprehensive comparison between simulated and observed ET galaxies. Las galaxias de tipo temprano (ET, por sus siglas en inglés), tanto elípticas como lenticulares, definen la bien conocida secuencia roja o relación color-magnitud (CMR, por sus siglas en inglés) en el diagrama color-magnitud (CMD, por sus siglas en inglés). En este trabajo, presentamos resultados de un estudio de dicha relación a diferentes corrimientos al rojo z en simulaciones numéricas cosmológicas. En particular, exploramos su evolución desde z = 2 hasta z = 0, seleccionando una muestra de objetos simulados que muestran propiedades similares a las de galaxias ET observadas del universo local. La velocidad de rotación promedio de dichos objetos es utilizada para determinar si su cinemática estelar correlaciona con su posición en el diagrama, así como con otras propiedades. También se analiza la evolución de rotadores rápidos y lentos sobre el CMD a diferentes corrimientos al rojo y los cambios en su comportamiento cinemático. Los resultados aquí mostrados forman parte de un proyecto que apunta a identificar los procesos que originaron la CMR a z = 0, realizando una comparación exhaustiva entre galaxias ET simuladas y observadas. Asociación Argentina de Astronomía Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
galaxies: elliptical and lenticular, cD
galaxies: kinematics and dynamics
cosmology: theory
spellingShingle Ciencias Astronómicas
galaxies: elliptical and lenticular, cD
galaxies: kinematics and dynamics
cosmology: theory
Zenocratti, Lucas José
Smith Castelli, Analía Viviana
De Rossi, M. E.
Faifer, Favio Raúl
The colour-magnitude relation of simulated early-type galaxies as a function of their kinematics
topic_facet Ciencias Astronómicas
galaxies: elliptical and lenticular, cD
galaxies: kinematics and dynamics
cosmology: theory
description Early-type (ET) galaxies (both elliptical and lenticular) define the well-known red sequence or colour-magnitude relation (CMR) in the colour-magnitude diagram (CMD). In this work, we present results of the study of that relation at different redshifts z in cosmological numerical simulations. In particular, we explore its evolution from z = 2 to z = 0, selecting a sample of simulated objects that display similar properties of observed ET galaxies in the Local Universe. The average rotation speed of those objects is used to determine if their stellar kinematics correlates with their position in the diagram, as well as with other properties. Evolution of fast- and slow-rotators over the CMD at different redshifts and changes in their kinematical behaviour is also analysed. Results shown here are part of a project aimed at identifying the processes that originated the CMR at z = 0, performing a comprehensive comparison between simulated and observed ET galaxies.
format Articulo
Articulo
author Zenocratti, Lucas José
Smith Castelli, Analía Viviana
De Rossi, M. E.
Faifer, Favio Raúl
author_facet Zenocratti, Lucas José
Smith Castelli, Analía Viviana
De Rossi, M. E.
Faifer, Favio Raúl
author_sort Zenocratti, Lucas José
title The colour-magnitude relation of simulated early-type galaxies as a function of their kinematics
title_short The colour-magnitude relation of simulated early-type galaxies as a function of their kinematics
title_full The colour-magnitude relation of simulated early-type galaxies as a function of their kinematics
title_fullStr The colour-magnitude relation of simulated early-type galaxies as a function of their kinematics
title_full_unstemmed The colour-magnitude relation of simulated early-type galaxies as a function of their kinematics
title_sort colour-magnitude relation of simulated early-type galaxies as a function of their kinematics
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/171591
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