Anisotropic correlation functions as tracers of central galaxy alignments in simulations

Autores
Rodriguez, Facundo; Merchan, Manuel Enrique; Artale, Maria Celeste; Andrews, Moira
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Motivated by observational results, we use IllustrisTNG hydrodynamical numerical simulations to study the alignment of the central galaxies in groups with the surrounding structures. This approach allows us to analyse galaxy and group properties not available in observations. To perform this analysis, we use a modified version of the two-point cross-correlation function and a measure of the angle between the semimajor axes of the central galaxies and the larger structures. Overall, our results reproduce observational ones, as we find large-scale anisotropy, which is dominated by the red central galaxies. In addition, the latter is noticeably more aligned with their group than the blue ones. In contrast to the observations, we find a strong dependence of the anisotropy on the central galaxy with mass, probably associated with the inability of observational methods to determine them. This result allows us to link the alignment to the process of halo assembly and the well-known dependence of halo anisotropy on mass. When we include the dark matter distribution in our analysis, we conclude that the galaxy alignment found in simulations (and observations) can be explained by a combination of physical processes at different scales: the central galaxy aligns with the dark matter halo it inhabits, and this, in turn, aligns with the surrounding structures at large scales.
Fil: Rodriguez, Facundo. 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: Merchan, Manuel Enrique. 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: Artale, Maria Celeste. Universidad Andrés Bello; Chile. Università di Padova; Italia. Istituto Nazionale di Fisica Nucleare; Italia. Purdue University; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Andrews, Moira. Purdue University; Estados Unidos. Universidad Nacional de Cordoba. Facultad de Ciencias de la Comunicación.; Argentina
Materia
DARK MATTER
GALAXIES: GROUPS: GENERAL
GALAXIES: HALOES
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: STATISTICAL
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:11336/226142
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/226142
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Anisotropic correlation functions as tracers of central galaxy alignments in simulationsRodriguez, FacundoMerchan, Manuel EnriqueArtale, Maria CelesteAndrews, MoiraDARK MATTERGALAXIES: GROUPS: GENERALGALAXIES: HALOESLARGE-SCALE STRUCTURE OF UNIVERSEMETHODS: STATISTICALhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Motivated by observational results, we use IllustrisTNG hydrodynamical numerical simulations to study the alignment of the central galaxies in groups with the surrounding structures. This approach allows us to analyse galaxy and group properties not available in observations. To perform this analysis, we use a modified version of the two-point cross-correlation function and a measure of the angle between the semimajor axes of the central galaxies and the larger structures. Overall, our results reproduce observational ones, as we find large-scale anisotropy, which is dominated by the red central galaxies. In addition, the latter is noticeably more aligned with their group than the blue ones. In contrast to the observations, we find a strong dependence of the anisotropy on the central galaxy with mass, probably associated with the inability of observational methods to determine them. This result allows us to link the alignment to the process of halo assembly and the well-known dependence of halo anisotropy on mass. When we include the dark matter distribution in our analysis, we conclude that the galaxy alignment found in simulations (and observations) can be explained by a combination of physical processes at different scales: the central galaxy aligns with the dark matter halo it inhabits, and this, in turn, aligns with the surrounding structures at large scales.Fil: Rodriguez, Facundo. 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: Merchan, Manuel Enrique. 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: Artale, Maria Celeste. Universidad Andrés Bello; Chile. Università di Padova; Italia. Istituto Nazionale di Fisica Nucleare; Italia. Purdue University; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Andrews, Moira. Purdue University; Estados Unidos. Universidad Nacional de Cordoba. Facultad de Ciencias de la Comunicación.; ArgentinaWiley Blackwell Publishing, Inc2023-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/226142Rodriguez, Facundo; Merchan, Manuel Enrique; Artale, Maria Celeste; Andrews, Moira; Anisotropic correlation functions as tracers of central galaxy alignments in simulations; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 521; 4; 6-2023; 5483-54910035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/521/4/5483/7086119info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stad924info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/2212.09781info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:23:45Zoai:ri.conicet.gov.ar:11336/226142instacron: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:34982025-10-22 11:23:45.637CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Anisotropic correlation functions as tracers of central galaxy alignments in simulations
title Anisotropic correlation functions as tracers of central galaxy alignments in simulations
spellingShingle Anisotropic correlation functions as tracers of central galaxy alignments in simulations
Rodriguez, Facundo
DARK MATTER
GALAXIES: GROUPS: GENERAL
GALAXIES: HALOES
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: STATISTICAL
title_short Anisotropic correlation functions as tracers of central galaxy alignments in simulations
title_full Anisotropic correlation functions as tracers of central galaxy alignments in simulations
title_fullStr Anisotropic correlation functions as tracers of central galaxy alignments in simulations
title_full_unstemmed Anisotropic correlation functions as tracers of central galaxy alignments in simulations
title_sort Anisotropic correlation functions as tracers of central galaxy alignments in simulations
dc.creator.none.fl_str_mv Rodriguez, Facundo
Merchan, Manuel Enrique
Artale, Maria Celeste
Andrews, Moira
author Rodriguez, Facundo
author_facet Rodriguez, Facundo
Merchan, Manuel Enrique
Artale, Maria Celeste
Andrews, Moira
author_role author
author2 Merchan, Manuel Enrique
Artale, Maria Celeste
Andrews, Moira
author2_role author
author
author
dc.subject.none.fl_str_mv DARK MATTER
GALAXIES: GROUPS: GENERAL
GALAXIES: HALOES
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: STATISTICAL
topic DARK MATTER
GALAXIES: GROUPS: GENERAL
GALAXIES: HALOES
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: STATISTICAL
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Motivated by observational results, we use IllustrisTNG hydrodynamical numerical simulations to study the alignment of the central galaxies in groups with the surrounding structures. This approach allows us to analyse galaxy and group properties not available in observations. To perform this analysis, we use a modified version of the two-point cross-correlation function and a measure of the angle between the semimajor axes of the central galaxies and the larger structures. Overall, our results reproduce observational ones, as we find large-scale anisotropy, which is dominated by the red central galaxies. In addition, the latter is noticeably more aligned with their group than the blue ones. In contrast to the observations, we find a strong dependence of the anisotropy on the central galaxy with mass, probably associated with the inability of observational methods to determine them. This result allows us to link the alignment to the process of halo assembly and the well-known dependence of halo anisotropy on mass. When we include the dark matter distribution in our analysis, we conclude that the galaxy alignment found in simulations (and observations) can be explained by a combination of physical processes at different scales: the central galaxy aligns with the dark matter halo it inhabits, and this, in turn, aligns with the surrounding structures at large scales.
Fil: Rodriguez, Facundo. 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: Merchan, Manuel Enrique. 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: Artale, Maria Celeste. Universidad Andrés Bello; Chile. Università di Padova; Italia. Istituto Nazionale di Fisica Nucleare; Italia. Purdue University; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Andrews, Moira. Purdue University; Estados Unidos. Universidad Nacional de Cordoba. Facultad de Ciencias de la Comunicación.; Argentina
description Motivated by observational results, we use IllustrisTNG hydrodynamical numerical simulations to study the alignment of the central galaxies in groups with the surrounding structures. This approach allows us to analyse galaxy and group properties not available in observations. To perform this analysis, we use a modified version of the two-point cross-correlation function and a measure of the angle between the semimajor axes of the central galaxies and the larger structures. Overall, our results reproduce observational ones, as we find large-scale anisotropy, which is dominated by the red central galaxies. In addition, the latter is noticeably more aligned with their group than the blue ones. In contrast to the observations, we find a strong dependence of the anisotropy on the central galaxy with mass, probably associated with the inability of observational methods to determine them. This result allows us to link the alignment to the process of halo assembly and the well-known dependence of halo anisotropy on mass. When we include the dark matter distribution in our analysis, we conclude that the galaxy alignment found in simulations (and observations) can be explained by a combination of physical processes at different scales: the central galaxy aligns with the dark matter halo it inhabits, and this, in turn, aligns with the surrounding structures at large scales.
publishDate 2023
dc.date.none.fl_str_mv 2023-06
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/11336/226142
Rodriguez, Facundo; Merchan, Manuel Enrique; Artale, Maria Celeste; Andrews, Moira; Anisotropic correlation functions as tracers of central galaxy alignments in simulations; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 521; 4; 6-2023; 5483-5491
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/226142
identifier_str_mv Rodriguez, Facundo; Merchan, Manuel Enrique; Artale, Maria Celeste; Andrews, Moira; Anisotropic correlation functions as tracers of central galaxy alignments in simulations; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 521; 4; 6-2023; 5483-5491
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://academic.oup.com/mnras/article/521/4/5483/7086119
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stad924
info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/2212.09781
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
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 12.982451

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