Quantifying the coherent outflows of galaxies around voids in the SDSS DR7

Autores
Patiri, Santiago Gabriel; Betancort Rijo, Juan; Prada, Francisco
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We report the detection, with a high level of confidence, of coherent outflows around voids found in the seventh data release of the Sloan Digital Sky Survey (SDSS DR7). In particular, we developed a robust |cos θ| statistical test to quantify the strength of redshiftspace distortions (RSD) associated with extended coherent velocity fields. We consistently find that the vector that joins void centers with galaxies that lie in shells around them is more likely to be perpendicular to the line-of-sight than parallel to it. This effect is clear evidence for the existence of outflows in the vicinity of voids. We show that the RSD exist for a wide range of void radius and shell thickness, but they are more evident in the largest voids in our sample. For instance, we find that the |cos θ| for galaxies located in shells within 2 h−1Mpc from the edge of voids larger than 15 h−1Mpc deviates 3.81σ from uniformity. The measurements presented in this work provide useful information to constrain cosmological parameters, in particular Ωm and σ8.
Fil: Patiri, Santiago Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Betancort Rijo, Juan. Universidad de La Laguna; España
Fil: Prada, Francisco. Universidad Autónoma de Madrid; España
Materia
COSMOLOGY: OBSERVATIONS
LARGE-SCALE STRUCTURE OF THE UNIVERSE
GALAXIES: STATISTICS
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:11336/269467
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/269467
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Quantifying the coherent outflows of galaxies around voids in the SDSS DR7Patiri, Santiago GabrielBetancort Rijo, JuanPrada, FranciscoCOSMOLOGY: OBSERVATIONSLARGE-SCALE STRUCTURE OF THE UNIVERSEGALAXIES: STATISTICSMETHODS: STATISTICALhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We report the detection, with a high level of confidence, of coherent outflows around voids found in the seventh data release of the Sloan Digital Sky Survey (SDSS DR7). In particular, we developed a robust |cos θ| statistical test to quantify the strength of redshiftspace distortions (RSD) associated with extended coherent velocity fields. We consistently find that the vector that joins void centers with galaxies that lie in shells around them is more likely to be perpendicular to the line-of-sight than parallel to it. This effect is clear evidence for the existence of outflows in the vicinity of voids. We show that the RSD exist for a wide range of void radius and shell thickness, but they are more evident in the largest voids in our sample. For instance, we find that the |cos θ| for galaxies located in shells within 2 h−1Mpc from the edge of voids larger than 15 h−1Mpc deviates 3.81σ from uniformity. The measurements presented in this work provide useful information to constrain cosmological parameters, in particular Ωm and σ8.Fil: Patiri, Santiago Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Betancort Rijo, Juan. Universidad de La Laguna; EspañaFil: Prada, Francisco. Universidad Autónoma de Madrid; EspañaEDP Sciences2012-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/269467Patiri, Santiago Gabriel; Betancort Rijo, Juan; Prada, Francisco; Quantifying the coherent outflows of galaxies around voids in the SDSS DR7; EDP Sciences; Astronomy and Astrophysics; 541; 4-2012; 1-40004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201219036info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:01:41Zoai:ri.conicet.gov.ar:11336/269467instacron: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 12:01:41.829CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Quantifying the coherent outflows of galaxies around voids in the SDSS DR7
title Quantifying the coherent outflows of galaxies around voids in the SDSS DR7
spellingShingle Quantifying the coherent outflows of galaxies around voids in the SDSS DR7
Patiri, Santiago Gabriel
COSMOLOGY: OBSERVATIONS
LARGE-SCALE STRUCTURE OF THE UNIVERSE
GALAXIES: STATISTICS
METHODS: STATISTICAL
title_short Quantifying the coherent outflows of galaxies around voids in the SDSS DR7
title_full Quantifying the coherent outflows of galaxies around voids in the SDSS DR7
title_fullStr Quantifying the coherent outflows of galaxies around voids in the SDSS DR7
title_full_unstemmed Quantifying the coherent outflows of galaxies around voids in the SDSS DR7
title_sort Quantifying the coherent outflows of galaxies around voids in the SDSS DR7
dc.creator.none.fl_str_mv Patiri, Santiago Gabriel
Betancort Rijo, Juan
Prada, Francisco
author Patiri, Santiago Gabriel
author_facet Patiri, Santiago Gabriel
Betancort Rijo, Juan
Prada, Francisco
author_role author
author2 Betancort Rijo, Juan
Prada, Francisco
author2_role author
author
dc.subject.none.fl_str_mv COSMOLOGY: OBSERVATIONS
LARGE-SCALE STRUCTURE OF THE UNIVERSE
GALAXIES: STATISTICS
METHODS: STATISTICAL
topic COSMOLOGY: OBSERVATIONS
LARGE-SCALE STRUCTURE OF THE UNIVERSE
GALAXIES: STATISTICS
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 We report the detection, with a high level of confidence, of coherent outflows around voids found in the seventh data release of the Sloan Digital Sky Survey (SDSS DR7). In particular, we developed a robust |cos θ| statistical test to quantify the strength of redshiftspace distortions (RSD) associated with extended coherent velocity fields. We consistently find that the vector that joins void centers with galaxies that lie in shells around them is more likely to be perpendicular to the line-of-sight than parallel to it. This effect is clear evidence for the existence of outflows in the vicinity of voids. We show that the RSD exist for a wide range of void radius and shell thickness, but they are more evident in the largest voids in our sample. For instance, we find that the |cos θ| for galaxies located in shells within 2 h−1Mpc from the edge of voids larger than 15 h−1Mpc deviates 3.81σ from uniformity. The measurements presented in this work provide useful information to constrain cosmological parameters, in particular Ωm and σ8.
Fil: Patiri, Santiago Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Betancort Rijo, Juan. Universidad de La Laguna; España
Fil: Prada, Francisco. Universidad Autónoma de Madrid; España
description We report the detection, with a high level of confidence, of coherent outflows around voids found in the seventh data release of the Sloan Digital Sky Survey (SDSS DR7). In particular, we developed a robust |cos θ| statistical test to quantify the strength of redshiftspace distortions (RSD) associated with extended coherent velocity fields. We consistently find that the vector that joins void centers with galaxies that lie in shells around them is more likely to be perpendicular to the line-of-sight than parallel to it. This effect is clear evidence for the existence of outflows in the vicinity of voids. We show that the RSD exist for a wide range of void radius and shell thickness, but they are more evident in the largest voids in our sample. For instance, we find that the |cos θ| for galaxies located in shells within 2 h−1Mpc from the edge of voids larger than 15 h−1Mpc deviates 3.81σ from uniformity. The measurements presented in this work provide useful information to constrain cosmological parameters, in particular Ωm and σ8.
publishDate 2012
dc.date.none.fl_str_mv 2012-04
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/11336/269467
Patiri, Santiago Gabriel; Betancort Rijo, Juan; Prada, Francisco; Quantifying the coherent outflows of galaxies around voids in the SDSS DR7; EDP Sciences; Astronomy and Astrophysics; 541; 4-2012; 1-4
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/269467
identifier_str_mv Patiri, Santiago Gabriel; Betancort Rijo, Juan; Prada, Francisco; Quantifying the coherent outflows of galaxies around voids in the SDSS DR7; EDP Sciences; Astronomy and Astrophysics; 541; 4-2012; 1-4
0004-6361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201219036
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 12.982451

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