Galaxy populations in haloes in high-density environments

Autores
Alfaro, Ignacio Germán; Ruiz, Andrés Nicolás; Luparello, Heliana Estefanía; Rodriguez, Facundo; Garcia Lambas, Diego Rodolfo
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Context. Some indications suggest that the properties of galaxy populations in dark matter haloes may depend on their large-scale environment. Recent works have pointed out that very low-density environments affect the halo occupation, but a similar analysis of high-density environments is still lacking. We used a simulated set of future virialised superstructures (FVS) to analyse the occupation of galaxies in haloes within these globally high-density regions. Aims. Our main goal is to explore the different characteristics of the galaxies populating haloes in FVS compared to the characteristics of galaxies in general. Methods. We used a publicly available simulated galaxy set constructed with a semi-Analytical model to identify FVS in the simulation. Then, we computed the halo occupation distribution within these superstructures for different absolute magnitude thresholds and performed several analyses, including the comparison to the global halo occupation results. We studied the dependence on the results of FVS properties such as density and volume, and we considered the morphology of galaxies. We also analysed the properties of the stellar content of galaxies and the formation time of the haloes inside an FVS and compared them to those of the general populations. Results. We find a significant increase in the halo occupation distribution inside FVS. This result is present for all absolute magnitude thresholds explored. The effect is larger in the densest regions of FVS, but does not depend on the volume of the superstructure. We also find that the stellar-mass content of galaxies considerably differs inside the superstructures. Low mass haloes have their central and satellite galaxies with a higher stellar mass content (∼50%), and exhibit mean star ages (∼20%) older than average. For massive haloes in FVS we find that only the stellar mass of satellite galaxies varies considerably corresponding to a decrease of ∼50%. We find a significant statistical difference between the formation times of haloes in FVS and the average population. haloes residing in superstructures formed earlier, a fact that leads to several changes in the HOD and their member galaxy properties.
Fil: Alfaro, Ignacio Germán. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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: Ruiz, Andrés Nicolás. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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: Luparello, Heliana Estefanía. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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: Rodriguez, Facundo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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: Garcia Lambas, Diego Rodolfo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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
Materia
GALAXIES: STATISTICS
GALAXY: HALO
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: DATA ANALYSIS
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:11336/170293
Acceder
id CONICETDig_9d8ddec9696283d91d4b7187a6542da8
oai_identifier_str oai:ri.conicet.gov.ar:11336/170293
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Galaxy populations in haloes in high-density environmentsAlfaro, Ignacio GermánRuiz, Andrés NicolásLuparello, Heliana EstefaníaRodriguez, FacundoGarcia Lambas, Diego RodolfoGALAXIES: STATISTICSGALAXY: HALOLARGE-SCALE STRUCTURE OF UNIVERSEMETHODS: DATA ANALYSISMETHODS: STATISTICALhttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1Context. Some indications suggest that the properties of galaxy populations in dark matter haloes may depend on their large-scale environment. Recent works have pointed out that very low-density environments affect the halo occupation, but a similar analysis of high-density environments is still lacking. We used a simulated set of future virialised superstructures (FVS) to analyse the occupation of galaxies in haloes within these globally high-density regions. Aims. Our main goal is to explore the different characteristics of the galaxies populating haloes in FVS compared to the characteristics of galaxies in general. Methods. We used a publicly available simulated galaxy set constructed with a semi-Analytical model to identify FVS in the simulation. Then, we computed the halo occupation distribution within these superstructures for different absolute magnitude thresholds and performed several analyses, including the comparison to the global halo occupation results. We studied the dependence on the results of FVS properties such as density and volume, and we considered the morphology of galaxies. We also analysed the properties of the stellar content of galaxies and the formation time of the haloes inside an FVS and compared them to those of the general populations. Results. We find a significant increase in the halo occupation distribution inside FVS. This result is present for all absolute magnitude thresholds explored. The effect is larger in the densest regions of FVS, but does not depend on the volume of the superstructure. We also find that the stellar-mass content of galaxies considerably differs inside the superstructures. Low mass haloes have their central and satellite galaxies with a higher stellar mass content (∼50%), and exhibit mean star ages (∼20%) older than average. For massive haloes in FVS we find that only the stellar mass of satellite galaxies varies considerably corresponding to a decrease of ∼50%. We find a significant statistical difference between the formation times of haloes in FVS and the average population. haloes residing in superstructures formed earlier, a fact that leads to several changes in the HOD and their member galaxy properties.Fil: Alfaro, Ignacio Germán. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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: Ruiz, Andrés Nicolás. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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: Luparello, Heliana Estefanía. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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: Rodriguez, Facundo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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: Garcia Lambas, Diego Rodolfo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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; ArgentinaEDP Sciences2021-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/170293Alfaro, Ignacio Germán; Ruiz, Andrés Nicolás; Luparello, Heliana Estefanía; Rodriguez, Facundo; Garcia Lambas, Diego Rodolfo; Galaxy populations in haloes in high-density environments; EDP Sciences; Astronomy and Astrophysics; 654; A62; 10-2021; 1-120004-63611432-0746CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2021/10/aa39838-20/aa39838-20.htmlinfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202039838info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:02:31Zoai:ri.conicet.gov.ar:11336/170293instacron: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 10:02:31.818CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Galaxy populations in haloes in high-density environments
title Galaxy populations in haloes in high-density environments
spellingShingle Galaxy populations in haloes in high-density environments
Alfaro, Ignacio Germán
GALAXIES: STATISTICS
GALAXY: HALO
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: DATA ANALYSIS
METHODS: STATISTICAL
title_short Galaxy populations in haloes in high-density environments
title_full Galaxy populations in haloes in high-density environments
title_fullStr Galaxy populations in haloes in high-density environments
title_full_unstemmed Galaxy populations in haloes in high-density environments
title_sort Galaxy populations in haloes in high-density environments
dc.creator.none.fl_str_mv Alfaro, Ignacio Germán
Ruiz, Andrés Nicolás
Luparello, Heliana Estefanía
Rodriguez, Facundo
Garcia Lambas, Diego Rodolfo
author Alfaro, Ignacio Germán
author_facet Alfaro, Ignacio Germán
Ruiz, Andrés Nicolás
Luparello, Heliana Estefanía
Rodriguez, Facundo
Garcia Lambas, Diego Rodolfo
author_role author
author2 Ruiz, Andrés Nicolás
Luparello, Heliana Estefanía
Rodriguez, Facundo
Garcia Lambas, Diego Rodolfo
author2_role author
author
author
author
dc.subject.none.fl_str_mv GALAXIES: STATISTICS
GALAXY: HALO
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: DATA ANALYSIS
METHODS: STATISTICAL
topic GALAXIES: STATISTICS
GALAXY: HALO
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: DATA ANALYSIS
METHODS: STATISTICAL
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.7
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Context. Some indications suggest that the properties of galaxy populations in dark matter haloes may depend on their large-scale environment. Recent works have pointed out that very low-density environments affect the halo occupation, but a similar analysis of high-density environments is still lacking. We used a simulated set of future virialised superstructures (FVS) to analyse the occupation of galaxies in haloes within these globally high-density regions. Aims. Our main goal is to explore the different characteristics of the galaxies populating haloes in FVS compared to the characteristics of galaxies in general. Methods. We used a publicly available simulated galaxy set constructed with a semi-Analytical model to identify FVS in the simulation. Then, we computed the halo occupation distribution within these superstructures for different absolute magnitude thresholds and performed several analyses, including the comparison to the global halo occupation results. We studied the dependence on the results of FVS properties such as density and volume, and we considered the morphology of galaxies. We also analysed the properties of the stellar content of galaxies and the formation time of the haloes inside an FVS and compared them to those of the general populations. Results. We find a significant increase in the halo occupation distribution inside FVS. This result is present for all absolute magnitude thresholds explored. The effect is larger in the densest regions of FVS, but does not depend on the volume of the superstructure. We also find that the stellar-mass content of galaxies considerably differs inside the superstructures. Low mass haloes have their central and satellite galaxies with a higher stellar mass content (∼50%), and exhibit mean star ages (∼20%) older than average. For massive haloes in FVS we find that only the stellar mass of satellite galaxies varies considerably corresponding to a decrease of ∼50%. We find a significant statistical difference between the formation times of haloes in FVS and the average population. haloes residing in superstructures formed earlier, a fact that leads to several changes in the HOD and their member galaxy properties.
Fil: Alfaro, Ignacio Germán. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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: Ruiz, Andrés Nicolás. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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: Luparello, Heliana Estefanía. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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: Rodriguez, Facundo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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: Garcia Lambas, Diego Rodolfo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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
description Context. Some indications suggest that the properties of galaxy populations in dark matter haloes may depend on their large-scale environment. Recent works have pointed out that very low-density environments affect the halo occupation, but a similar analysis of high-density environments is still lacking. We used a simulated set of future virialised superstructures (FVS) to analyse the occupation of galaxies in haloes within these globally high-density regions. Aims. Our main goal is to explore the different characteristics of the galaxies populating haloes in FVS compared to the characteristics of galaxies in general. Methods. We used a publicly available simulated galaxy set constructed with a semi-Analytical model to identify FVS in the simulation. Then, we computed the halo occupation distribution within these superstructures for different absolute magnitude thresholds and performed several analyses, including the comparison to the global halo occupation results. We studied the dependence on the results of FVS properties such as density and volume, and we considered the morphology of galaxies. We also analysed the properties of the stellar content of galaxies and the formation time of the haloes inside an FVS and compared them to those of the general populations. Results. We find a significant increase in the halo occupation distribution inside FVS. This result is present for all absolute magnitude thresholds explored. The effect is larger in the densest regions of FVS, but does not depend on the volume of the superstructure. We also find that the stellar-mass content of galaxies considerably differs inside the superstructures. Low mass haloes have their central and satellite galaxies with a higher stellar mass content (∼50%), and exhibit mean star ages (∼20%) older than average. For massive haloes in FVS we find that only the stellar mass of satellite galaxies varies considerably corresponding to a decrease of ∼50%. We find a significant statistical difference between the formation times of haloes in FVS and the average population. haloes residing in superstructures formed earlier, a fact that leads to several changes in the HOD and their member galaxy properties.
publishDate 2021
dc.date.none.fl_str_mv 2021-10
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/11336/170293
Alfaro, Ignacio Germán; Ruiz, Andrés Nicolás; Luparello, Heliana Estefanía; Rodriguez, Facundo; Garcia Lambas, Diego Rodolfo; Galaxy populations in haloes in high-density environments; EDP Sciences; Astronomy and Astrophysics; 654; A62; 10-2021; 1-12
0004-6361
1432-0746
CONICET Digital
CONICET
url http://hdl.handle.net/11336/170293
identifier_str_mv Alfaro, Ignacio Germán; Ruiz, Andrés Nicolás; Luparello, Heliana Estefanía; Rodriguez, Facundo; Garcia Lambas, Diego Rodolfo; Galaxy populations in haloes in high-density environments; EDP Sciences; Astronomy and Astrophysics; 654; A62; 10-2021; 1-12
0004-6361
1432-0746
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://www.aanda.org/articles/aa/abs/2021/10/aa39838-20/aa39838-20.html
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202039838
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 EDP Sciences
publisher.none.fl_str_mv EDP Sciences
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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