Effects of baryon mass loss on profiles of large galactic dark matter haloes

Autores
Ragone Figueroa, Cinthia Judith; Granato, Gian Luigi; Abadi, Mario Gabriel
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We perform controlled numerical experiments to asses the effect of baryon mass loss on the inner structure of large galactic dark matter haloes. This mass expulsion is intended to mimic both the supernovae and AGN feedbacks, as well as the evolution of stellar populations. This study is meant in particular for precursors of massive Early Type Galaxies, wherein strong AGN feedback (often dubbed "QSO mode" in galaxy formation models) has been proposed to remove on a short timescale, of the order of a few dynamical times, a substantial fraction of their baryons. In a previous paper we evaluated the observational consequences (size increase) of this process on the galactic structure (Ragone-Figueroa & Granato 2011). Here we focus on the distribution of dark matter in the galactic region. It is shown that the inner region of the DM halo expands and its density profile flattens by a sizeable amount, with little dependence on the expulsion timescale. We also evaluate the effect of the commonly made approximation of treating the baryonic component as a potential that changes in intensity without any variation in shape. This approximation leads to some underestimates of the halo expansion and its slope flattening. We conclude that cuspy density profiles in ETGs could be difficult to reconcile with an effective AGN (or stellar) feedback during the evolution of these systems.
Fil: Ragone Figueroa, Cinthia Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Granato, Gian Luigi. Istituto Nazionale di Astrofisica; Italia
Fil: Abadi, Mario Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Materia
METHODS: NUMERICAL
GALAXIES: ELLIPTICAL AND LENTICULAR, CD
GALAXIES: EVOLUTION
GALAXIES: FORMATION
GALAXIES: HALOES
QUASARS: GENERAL
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/269512
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/269512
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Effects of baryon mass loss on profiles of large galactic dark matter haloesRagone Figueroa, Cinthia JudithGranato, Gian LuigiAbadi, Mario GabrielMETHODS: NUMERICALGALAXIES: ELLIPTICAL AND LENTICULAR, CDGALAXIES: EVOLUTIONGALAXIES: FORMATIONGALAXIES: HALOESQUASARS: GENERALhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We perform controlled numerical experiments to asses the effect of baryon mass loss on the inner structure of large galactic dark matter haloes. This mass expulsion is intended to mimic both the supernovae and AGN feedbacks, as well as the evolution of stellar populations. This study is meant in particular for precursors of massive Early Type Galaxies, wherein strong AGN feedback (often dubbed "QSO mode" in galaxy formation models) has been proposed to remove on a short timescale, of the order of a few dynamical times, a substantial fraction of their baryons. In a previous paper we evaluated the observational consequences (size increase) of this process on the galactic structure (Ragone-Figueroa & Granato 2011). Here we focus on the distribution of dark matter in the galactic region. It is shown that the inner region of the DM halo expands and its density profile flattens by a sizeable amount, with little dependence on the expulsion timescale. We also evaluate the effect of the commonly made approximation of treating the baryonic component as a potential that changes in intensity without any variation in shape. This approximation leads to some underestimates of the halo expansion and its slope flattening. We conclude that cuspy density profiles in ETGs could be difficult to reconcile with an effective AGN (or stellar) feedback during the evolution of these systems.Fil: Ragone Figueroa, Cinthia Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Granato, Gian Luigi. Istituto Nazionale di Astrofisica; ItaliaFil: Abadi, Mario Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaWiley Blackwell Publishing, Inc2012-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/269512Ragone Figueroa, Cinthia Judith; Granato, Gian Luigi; Abadi, Mario Gabriel; Effects of baryon mass loss on profiles of large galactic dark matter haloes; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 423; 4; 7-2012; 3243-32500035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-2966.2012.21113.xinfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2012.21113.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:42:01Zoai:ri.conicet.gov.ar:11336/269512instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:42:01.759CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effects of baryon mass loss on profiles of large galactic dark matter haloes
title Effects of baryon mass loss on profiles of large galactic dark matter haloes
spellingShingle Effects of baryon mass loss on profiles of large galactic dark matter haloes
Ragone Figueroa, Cinthia Judith
METHODS: NUMERICAL
GALAXIES: ELLIPTICAL AND LENTICULAR, CD
GALAXIES: EVOLUTION
GALAXIES: FORMATION
GALAXIES: HALOES
QUASARS: GENERAL
title_short Effects of baryon mass loss on profiles of large galactic dark matter haloes
title_full Effects of baryon mass loss on profiles of large galactic dark matter haloes
title_fullStr Effects of baryon mass loss on profiles of large galactic dark matter haloes
title_full_unstemmed Effects of baryon mass loss on profiles of large galactic dark matter haloes
title_sort Effects of baryon mass loss on profiles of large galactic dark matter haloes
dc.creator.none.fl_str_mv Ragone Figueroa, Cinthia Judith
Granato, Gian Luigi
Abadi, Mario Gabriel
author Ragone Figueroa, Cinthia Judith
author_facet Ragone Figueroa, Cinthia Judith
Granato, Gian Luigi
Abadi, Mario Gabriel
author_role author
author2 Granato, Gian Luigi
Abadi, Mario Gabriel
author2_role author
author
dc.subject.none.fl_str_mv METHODS: NUMERICAL
GALAXIES: ELLIPTICAL AND LENTICULAR, CD
GALAXIES: EVOLUTION
GALAXIES: FORMATION
GALAXIES: HALOES
QUASARS: GENERAL
topic METHODS: NUMERICAL
GALAXIES: ELLIPTICAL AND LENTICULAR, CD
GALAXIES: EVOLUTION
GALAXIES: FORMATION
GALAXIES: HALOES
QUASARS: GENERAL
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We perform controlled numerical experiments to asses the effect of baryon mass loss on the inner structure of large galactic dark matter haloes. This mass expulsion is intended to mimic both the supernovae and AGN feedbacks, as well as the evolution of stellar populations. This study is meant in particular for precursors of massive Early Type Galaxies, wherein strong AGN feedback (often dubbed "QSO mode" in galaxy formation models) has been proposed to remove on a short timescale, of the order of a few dynamical times, a substantial fraction of their baryons. In a previous paper we evaluated the observational consequences (size increase) of this process on the galactic structure (Ragone-Figueroa & Granato 2011). Here we focus on the distribution of dark matter in the galactic region. It is shown that the inner region of the DM halo expands and its density profile flattens by a sizeable amount, with little dependence on the expulsion timescale. We also evaluate the effect of the commonly made approximation of treating the baryonic component as a potential that changes in intensity without any variation in shape. This approximation leads to some underestimates of the halo expansion and its slope flattening. We conclude that cuspy density profiles in ETGs could be difficult to reconcile with an effective AGN (or stellar) feedback during the evolution of these systems.
Fil: Ragone Figueroa, Cinthia Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Granato, Gian Luigi. Istituto Nazionale di Astrofisica; Italia
Fil: Abadi, Mario Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
description We perform controlled numerical experiments to asses the effect of baryon mass loss on the inner structure of large galactic dark matter haloes. This mass expulsion is intended to mimic both the supernovae and AGN feedbacks, as well as the evolution of stellar populations. This study is meant in particular for precursors of massive Early Type Galaxies, wherein strong AGN feedback (often dubbed "QSO mode" in galaxy formation models) has been proposed to remove on a short timescale, of the order of a few dynamical times, a substantial fraction of their baryons. In a previous paper we evaluated the observational consequences (size increase) of this process on the galactic structure (Ragone-Figueroa & Granato 2011). Here we focus on the distribution of dark matter in the galactic region. It is shown that the inner region of the DM halo expands and its density profile flattens by a sizeable amount, with little dependence on the expulsion timescale. We also evaluate the effect of the commonly made approximation of treating the baryonic component as a potential that changes in intensity without any variation in shape. This approximation leads to some underestimates of the halo expansion and its slope flattening. We conclude that cuspy density profiles in ETGs could be difficult to reconcile with an effective AGN (or stellar) feedback during the evolution of these systems.
publishDate 2012
dc.date.none.fl_str_mv 2012-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/269512
Ragone Figueroa, Cinthia Judith; Granato, Gian Luigi; Abadi, Mario Gabriel; Effects of baryon mass loss on profiles of large galactic dark matter haloes; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 423; 4; 7-2012; 3243-3250
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/269512
identifier_str_mv Ragone Figueroa, Cinthia Judith; Granato, Gian Luigi; Abadi, Mario Gabriel; Effects of baryon mass loss on profiles of large galactic dark matter haloes; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 423; 4; 7-2012; 3243-3250
0035-8711
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-2966.2012.21113.x
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2012.21113.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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