Evolution and role of mergers in the BCG-cluster alignment. A view from cosmological hydrosimulations

Autores
Ragone Figueroa, Cinthia Judith; Granato, Gian Luigi; Borgani, S.; De Propris, R.; Garcia Lambas, Diego Rodolfo; Murante, G.; Rasia, E.; West, M.
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Contradictory results have been reported on the time evolution of the alignment between clusters and their brightest cluster galaxy (BCG).We study this topic by analysing cosmological hydrosimulations of 24 massive clusters with M200|z=0 ≥ 1015M⊙, plus 5 less massive with 1 × 1014 ≤ M200|z=0≤ 7 × 1014M⊙, which have already proven to produce realistic BCG masses.We compute the BCG alignment with both the distribution of cluster galaxies and the dark matter (DM) halo. At redshift z = 0, the major axes of the simulated BCGs and their host cluster galaxy distributions are aligned on average within 20?. The BCG alignment with the DM halo is even tighter. The alignment persists up to z ≤ 2 with no evident evolution. This result continues, although with a weaker signal, when considering the projected alignment. The cluster alignment with the surrounding distribution of matter (3R200) is already in place at z ~ 4 with a typical angle of 35?, before the BCG-cluster alignment develops. The BCG turns out to be also aligned with the same matter distribution, albeit always to a lesser extent. These results taken together might imply that the BCG-cluster alignment occurs in an outside-in fashion. Depending on their frequency and geometry, mergers can promote, destroy or weaken the alignments. Clusters that do not experience recent majormergers are typically more relaxed and aligned with their BCG. In turn, accretions closer to the cluster elongation axis tend to improve the alignment as opposed to accretions closer to the cluster minor axis.
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
Fil: Granato, Gian Luigi. Istituto Nazionale di Astrofisica; Italia
Fil: Borgani, S.. Istituto Nazionale di Astrofisica; Italia
Fil: De Propris, R.. University of Turku; Finlandia
Fil: Garcia Lambas, Diego Rodolfo. 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
Fil: Murante, G.. Istituto Nazionale di Astrofisica; Italia
Fil: Rasia, E.. Istituto Nazionale di Astrofisica; Italia
Fil: West, M.. Lowell Observatory; Estados Unidos
Materia
CD
GALAXIES: CLUSTERS: GENERAL
GALAXIES: ELLIPTICAL AND LENTICULAR
GALAXIES: EVOLUTION
GALAXIES: FORMATION
GALAXIES: HALOES
METHODS: NUMERICAL
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:11336/137399
Acceder
id CONICETDig_6010979b748966fa3b2d0349a721b48b
oai_identifier_str oai:ri.conicet.gov.ar:11336/137399
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Evolution and role of mergers in the BCG-cluster alignment. A view from cosmological hydrosimulationsRagone Figueroa, Cinthia JudithGranato, Gian LuigiBorgani, S.De Propris, R.Garcia Lambas, Diego RodolfoMurante, G.Rasia, E.West, M.CDGALAXIES: CLUSTERS: GENERALGALAXIES: ELLIPTICAL AND LENTICULARGALAXIES: EVOLUTIONGALAXIES: FORMATIONGALAXIES: HALOESMETHODS: NUMERICALhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Contradictory results have been reported on the time evolution of the alignment between clusters and their brightest cluster galaxy (BCG).We study this topic by analysing cosmological hydrosimulations of 24 massive clusters with M200|z=0 ≥ 1015M⊙, plus 5 less massive with 1 × 1014 ≤ M200|z=0≤ 7 × 1014M⊙, which have already proven to produce realistic BCG masses.We compute the BCG alignment with both the distribution of cluster galaxies and the dark matter (DM) halo. At redshift z = 0, the major axes of the simulated BCGs and their host cluster galaxy distributions are aligned on average within 20?. The BCG alignment with the DM halo is even tighter. The alignment persists up to z ≤ 2 with no evident evolution. This result continues, although with a weaker signal, when considering the projected alignment. The cluster alignment with the surrounding distribution of matter (3R200) is already in place at z ~ 4 with a typical angle of 35?, before the BCG-cluster alignment develops. The BCG turns out to be also aligned with the same matter distribution, albeit always to a lesser extent. These results taken together might imply that the BCG-cluster alignment occurs in an outside-in fashion. Depending on their frequency and geometry, mergers can promote, destroy or weaken the alignments. Clusters that do not experience recent majormergers are typically more relaxed and aligned with their BCG. In turn, accretions closer to the cluster elongation axis tend to improve the alignment as opposed to accretions closer to the cluster minor axis.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; ArgentinaFil: Granato, Gian Luigi. Istituto Nazionale di Astrofisica; ItaliaFil: Borgani, S.. Istituto Nazionale di Astrofisica; ItaliaFil: De Propris, R.. University of Turku; FinlandiaFil: Garcia Lambas, Diego Rodolfo. 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; ArgentinaFil: Murante, G.. Istituto Nazionale di Astrofisica; ItaliaFil: Rasia, E.. Istituto Nazionale di Astrofisica; ItaliaFil: West, M.. Lowell Observatory; Estados UnidosWiley Blackwell Publishing, Inc2020-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/137399Ragone Figueroa, Cinthia Judith; Granato, Gian Luigi; Borgani, S.; De Propris, R.; Garcia Lambas, Diego Rodolfo; et al.; Evolution and role of mergers in the BCG-cluster alignment. A view from cosmological hydrosimulations; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 495; 2; 6-2020; 2436-24450035-87111365-2966CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/495/2/2436/5841296info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/staa1389info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:33:56Zoai:ri.conicet.gov.ar:11336/137399instacron: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 10:33:56.698CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Evolution and role of mergers in the BCG-cluster alignment. A view from cosmological hydrosimulations
title Evolution and role of mergers in the BCG-cluster alignment. A view from cosmological hydrosimulations
spellingShingle Evolution and role of mergers in the BCG-cluster alignment. A view from cosmological hydrosimulations
Ragone Figueroa, Cinthia Judith
CD
GALAXIES: CLUSTERS: GENERAL
GALAXIES: ELLIPTICAL AND LENTICULAR
GALAXIES: EVOLUTION
GALAXIES: FORMATION
GALAXIES: HALOES
METHODS: NUMERICAL
title_short Evolution and role of mergers in the BCG-cluster alignment. A view from cosmological hydrosimulations
title_full Evolution and role of mergers in the BCG-cluster alignment. A view from cosmological hydrosimulations
title_fullStr Evolution and role of mergers in the BCG-cluster alignment. A view from cosmological hydrosimulations
title_full_unstemmed Evolution and role of mergers in the BCG-cluster alignment. A view from cosmological hydrosimulations
title_sort Evolution and role of mergers in the BCG-cluster alignment. A view from cosmological hydrosimulations
dc.creator.none.fl_str_mv Ragone Figueroa, Cinthia Judith
Granato, Gian Luigi
Borgani, S.
De Propris, R.
Garcia Lambas, Diego Rodolfo
Murante, G.
Rasia, E.
West, M.
author Ragone Figueroa, Cinthia Judith
author_facet Ragone Figueroa, Cinthia Judith
Granato, Gian Luigi
Borgani, S.
De Propris, R.
Garcia Lambas, Diego Rodolfo
Murante, G.
Rasia, E.
West, M.
author_role author
author2 Granato, Gian Luigi
Borgani, S.
De Propris, R.
Garcia Lambas, Diego Rodolfo
Murante, G.
Rasia, E.
West, M.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv CD
GALAXIES: CLUSTERS: GENERAL
GALAXIES: ELLIPTICAL AND LENTICULAR
GALAXIES: EVOLUTION
GALAXIES: FORMATION
GALAXIES: HALOES
METHODS: NUMERICAL
topic CD
GALAXIES: CLUSTERS: GENERAL
GALAXIES: ELLIPTICAL AND LENTICULAR
GALAXIES: EVOLUTION
GALAXIES: FORMATION
GALAXIES: HALOES
METHODS: NUMERICAL
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Contradictory results have been reported on the time evolution of the alignment between clusters and their brightest cluster galaxy (BCG).We study this topic by analysing cosmological hydrosimulations of 24 massive clusters with M200|z=0 ≥ 1015M⊙, plus 5 less massive with 1 × 1014 ≤ M200|z=0≤ 7 × 1014M⊙, which have already proven to produce realistic BCG masses.We compute the BCG alignment with both the distribution of cluster galaxies and the dark matter (DM) halo. At redshift z = 0, the major axes of the simulated BCGs and their host cluster galaxy distributions are aligned on average within 20?. The BCG alignment with the DM halo is even tighter. The alignment persists up to z ≤ 2 with no evident evolution. This result continues, although with a weaker signal, when considering the projected alignment. The cluster alignment with the surrounding distribution of matter (3R200) is already in place at z ~ 4 with a typical angle of 35?, before the BCG-cluster alignment develops. The BCG turns out to be also aligned with the same matter distribution, albeit always to a lesser extent. These results taken together might imply that the BCG-cluster alignment occurs in an outside-in fashion. Depending on their frequency and geometry, mergers can promote, destroy or weaken the alignments. Clusters that do not experience recent majormergers are typically more relaxed and aligned with their BCG. In turn, accretions closer to the cluster elongation axis tend to improve the alignment as opposed to accretions closer to the cluster minor axis.
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
Fil: Granato, Gian Luigi. Istituto Nazionale di Astrofisica; Italia
Fil: Borgani, S.. Istituto Nazionale di Astrofisica; Italia
Fil: De Propris, R.. University of Turku; Finlandia
Fil: Garcia Lambas, Diego Rodolfo. 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
Fil: Murante, G.. Istituto Nazionale di Astrofisica; Italia
Fil: Rasia, E.. Istituto Nazionale di Astrofisica; Italia
Fil: West, M.. Lowell Observatory; Estados Unidos
description Contradictory results have been reported on the time evolution of the alignment between clusters and their brightest cluster galaxy (BCG).We study this topic by analysing cosmological hydrosimulations of 24 massive clusters with M200|z=0 ≥ 1015M⊙, plus 5 less massive with 1 × 1014 ≤ M200|z=0≤ 7 × 1014M⊙, which have already proven to produce realistic BCG masses.We compute the BCG alignment with both the distribution of cluster galaxies and the dark matter (DM) halo. At redshift z = 0, the major axes of the simulated BCGs and their host cluster galaxy distributions are aligned on average within 20?. The BCG alignment with the DM halo is even tighter. The alignment persists up to z ≤ 2 with no evident evolution. This result continues, although with a weaker signal, when considering the projected alignment. The cluster alignment with the surrounding distribution of matter (3R200) is already in place at z ~ 4 with a typical angle of 35?, before the BCG-cluster alignment develops. The BCG turns out to be also aligned with the same matter distribution, albeit always to a lesser extent. These results taken together might imply that the BCG-cluster alignment occurs in an outside-in fashion. Depending on their frequency and geometry, mergers can promote, destroy or weaken the alignments. Clusters that do not experience recent majormergers are typically more relaxed and aligned with their BCG. In turn, accretions closer to the cluster elongation axis tend to improve the alignment as opposed to accretions closer to the cluster minor axis.
publishDate 2020
dc.date.none.fl_str_mv 2020-06
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/11336/137399
Ragone Figueroa, Cinthia Judith; Granato, Gian Luigi; Borgani, S.; De Propris, R.; Garcia Lambas, Diego Rodolfo; et al.; Evolution and role of mergers in the BCG-cluster alignment. A view from cosmological hydrosimulations; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 495; 2; 6-2020; 2436-2445
0035-8711
1365-2966
CONICET Digital
CONICET
url http://hdl.handle.net/11336/137399
identifier_str_mv Ragone Figueroa, Cinthia Judith; Granato, Gian Luigi; Borgani, S.; De Propris, R.; Garcia Lambas, Diego Rodolfo; et al.; Evolution and role of mergers in the BCG-cluster alignment. A view from cosmological hydrosimulations; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 495; 2; 6-2020; 2436-2445
0035-8711
1365-2966
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://academic.oup.com/mnras/article/495/2/2436/5841296
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/staa1389
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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