Future virialized structures: an analysis of superstructures in the SDSS-DR7

Autores
Luparello, Heliana Estefanía; Lares Harbin Latorre, Marcelo; Garcia Lambas, Diego Rodolfo; Padilla, Nelson David
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We construct catalogues of present superstructures that, according to a Λ cold dark matter (ΛCDM) scenario, will evolve into isolated, virialized structures in the future. We use a smoothed luminosity density map derived from galaxies in SDSS-DR7, Abazajian et al., data and separate high-luminosity density peaks. The luminosity density map is obtained from a volume-limited sample of galaxies in the spectroscopic galaxy catalogue, within the SDSS-DR7 footprint area and in the redshift range 0.04 < z < 0.12. Other two samples are constructed for calibration and testing purposes, up to z= 0.10 and 0.15. The luminosity of each galaxy is spread using an Epanechnikov kernel of 8Mpch-1 radius, and the map is constructed on a 1Mpch-1 cubic cell grid. Future virialized structures (FVSs) are identified as regions with overdensity above a given threshold, calibrated using a ΛCDM numerical simulation and the criteria presented by Dünner et al. We assume a constant mass-to-luminosity ratio and impose the further condition of a minimum luminosity of 1012L⊙. According to our calibrations with a numerical simulation, these criteria lead to a negligible contamination by less overdense (non-FVS) superstructures. We present a catalogue of superstructures in the SDSS-DR7 area within redshift 0.04 < z < 0.12 and test the reliability of our method by studying different subsamples as well as a mock catalogue. We compute the luminosity and volume distributions of the superstructures, finding that about 10 per cent of the luminosity (mass) will end up in future virialized structures. The fraction of groups and X-ray clusters in these superstructures is higher for groups/clusters of higher mass, suggesting that future cluster mergers will involve the most massive systems. We also analyse known structures in the present Universe and compare with our catalogue of FVSs.
Fil: Luparello, Heliana Estefanía. 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: Lares Harbin Latorre, Marcelo. 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. 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: Padilla, Nelson David. Universidad Católica de Chile; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Materia
CATALOGUES
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:11336/278209
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/278209
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Future virialized structures: an analysis of superstructures in the SDSS-DR7Luparello, Heliana EstefaníaLares Harbin Latorre, MarceloGarcia Lambas, Diego RodolfoPadilla, Nelson DavidCATALOGUESLARGE-SCALE STRUCTURE OF UNIVERSEMETHODS: DATA ANALYSISMETHODS: STATISTICALhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We construct catalogues of present superstructures that, according to a Λ cold dark matter (ΛCDM) scenario, will evolve into isolated, virialized structures in the future. We use a smoothed luminosity density map derived from galaxies in SDSS-DR7, Abazajian et al., data and separate high-luminosity density peaks. The luminosity density map is obtained from a volume-limited sample of galaxies in the spectroscopic galaxy catalogue, within the SDSS-DR7 footprint area and in the redshift range 0.04 < z < 0.12. Other two samples are constructed for calibration and testing purposes, up to z= 0.10 and 0.15. The luminosity of each galaxy is spread using an Epanechnikov kernel of 8Mpch-1 radius, and the map is constructed on a 1Mpch-1 cubic cell grid. Future virialized structures (FVSs) are identified as regions with overdensity above a given threshold, calibrated using a ΛCDM numerical simulation and the criteria presented by Dünner et al. We assume a constant mass-to-luminosity ratio and impose the further condition of a minimum luminosity of 1012L⊙. According to our calibrations with a numerical simulation, these criteria lead to a negligible contamination by less overdense (non-FVS) superstructures. We present a catalogue of superstructures in the SDSS-DR7 area within redshift 0.04 < z < 0.12 and test the reliability of our method by studying different subsamples as well as a mock catalogue. We compute the luminosity and volume distributions of the superstructures, finding that about 10 per cent of the luminosity (mass) will end up in future virialized structures. The fraction of groups and X-ray clusters in these superstructures is higher for groups/clusters of higher mass, suggesting that future cluster mergers will involve the most massive systems. We also analyse known structures in the present Universe and compare with our catalogue of FVSs.Fil: Luparello, Heliana Estefanía. 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: Lares Harbin Latorre, Marcelo. 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. 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: Padilla, Nelson David. Universidad Católica de Chile; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaWiley Blackwell Publishing, Inc2011-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/278209Luparello, Heliana Estefanía; Lares Harbin Latorre, Marcelo; Garcia Lambas, Diego Rodolfo; Padilla, Nelson David; Future virialized structures: an analysis of superstructures in the SDSS-DR7; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 415; 1; 7-2011; 964-9760035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://mnras.oxfordjournals.org/content/415/1/964.fullinfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2011.18794.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 Técnicas2025-12-23T14:32:18Zoai:ri.conicet.gov.ar:11336/278209instacron: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:34982025-12-23 14:32:18.352CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Future virialized structures: an analysis of superstructures in the SDSS-DR7
title Future virialized structures: an analysis of superstructures in the SDSS-DR7
spellingShingle Future virialized structures: an analysis of superstructures in the SDSS-DR7
Luparello, Heliana Estefanía
CATALOGUES
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: DATA ANALYSIS
METHODS: STATISTICAL
title_short Future virialized structures: an analysis of superstructures in the SDSS-DR7
title_full Future virialized structures: an analysis of superstructures in the SDSS-DR7
title_fullStr Future virialized structures: an analysis of superstructures in the SDSS-DR7
title_full_unstemmed Future virialized structures: an analysis of superstructures in the SDSS-DR7
title_sort Future virialized structures: an analysis of superstructures in the SDSS-DR7
dc.creator.none.fl_str_mv Luparello, Heliana Estefanía
Lares Harbin Latorre, Marcelo
Garcia Lambas, Diego Rodolfo
Padilla, Nelson David
author Luparello, Heliana Estefanía
author_facet Luparello, Heliana Estefanía
Lares Harbin Latorre, Marcelo
Garcia Lambas, Diego Rodolfo
Padilla, Nelson David
author_role author
author2 Lares Harbin Latorre, Marcelo
Garcia Lambas, Diego Rodolfo
Padilla, Nelson David
author2_role author
author
author
dc.subject.none.fl_str_mv CATALOGUES
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: DATA ANALYSIS
METHODS: STATISTICAL
topic CATALOGUES
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: DATA ANALYSIS
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 construct catalogues of present superstructures that, according to a Λ cold dark matter (ΛCDM) scenario, will evolve into isolated, virialized structures in the future. We use a smoothed luminosity density map derived from galaxies in SDSS-DR7, Abazajian et al., data and separate high-luminosity density peaks. The luminosity density map is obtained from a volume-limited sample of galaxies in the spectroscopic galaxy catalogue, within the SDSS-DR7 footprint area and in the redshift range 0.04 < z < 0.12. Other two samples are constructed for calibration and testing purposes, up to z= 0.10 and 0.15. The luminosity of each galaxy is spread using an Epanechnikov kernel of 8Mpch-1 radius, and the map is constructed on a 1Mpch-1 cubic cell grid. Future virialized structures (FVSs) are identified as regions with overdensity above a given threshold, calibrated using a ΛCDM numerical simulation and the criteria presented by Dünner et al. We assume a constant mass-to-luminosity ratio and impose the further condition of a minimum luminosity of 1012L⊙. According to our calibrations with a numerical simulation, these criteria lead to a negligible contamination by less overdense (non-FVS) superstructures. We present a catalogue of superstructures in the SDSS-DR7 area within redshift 0.04 < z < 0.12 and test the reliability of our method by studying different subsamples as well as a mock catalogue. We compute the luminosity and volume distributions of the superstructures, finding that about 10 per cent of the luminosity (mass) will end up in future virialized structures. The fraction of groups and X-ray clusters in these superstructures is higher for groups/clusters of higher mass, suggesting that future cluster mergers will involve the most massive systems. We also analyse known structures in the present Universe and compare with our catalogue of FVSs.
Fil: Luparello, Heliana Estefanía. 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: Lares Harbin Latorre, Marcelo. 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. 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: Padilla, Nelson David. Universidad Católica de Chile; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
description We construct catalogues of present superstructures that, according to a Λ cold dark matter (ΛCDM) scenario, will evolve into isolated, virialized structures in the future. We use a smoothed luminosity density map derived from galaxies in SDSS-DR7, Abazajian et al., data and separate high-luminosity density peaks. The luminosity density map is obtained from a volume-limited sample of galaxies in the spectroscopic galaxy catalogue, within the SDSS-DR7 footprint area and in the redshift range 0.04 < z < 0.12. Other two samples are constructed for calibration and testing purposes, up to z= 0.10 and 0.15. The luminosity of each galaxy is spread using an Epanechnikov kernel of 8Mpch-1 radius, and the map is constructed on a 1Mpch-1 cubic cell grid. Future virialized structures (FVSs) are identified as regions with overdensity above a given threshold, calibrated using a ΛCDM numerical simulation and the criteria presented by Dünner et al. We assume a constant mass-to-luminosity ratio and impose the further condition of a minimum luminosity of 1012L⊙. According to our calibrations with a numerical simulation, these criteria lead to a negligible contamination by less overdense (non-FVS) superstructures. We present a catalogue of superstructures in the SDSS-DR7 area within redshift 0.04 < z < 0.12 and test the reliability of our method by studying different subsamples as well as a mock catalogue. We compute the luminosity and volume distributions of the superstructures, finding that about 10 per cent of the luminosity (mass) will end up in future virialized structures. The fraction of groups and X-ray clusters in these superstructures is higher for groups/clusters of higher mass, suggesting that future cluster mergers will involve the most massive systems. We also analyse known structures in the present Universe and compare with our catalogue of FVSs.
publishDate 2011
dc.date.none.fl_str_mv 2011-07
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/11336/278209
Luparello, Heliana Estefanía; Lares Harbin Latorre, Marcelo; Garcia Lambas, Diego Rodolfo; Padilla, Nelson David; Future virialized structures: an analysis of superstructures in the SDSS-DR7; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 415; 1; 7-2011; 964-976
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/278209
identifier_str_mv Luparello, Heliana Estefanía; Lares Harbin Latorre, Marcelo; Garcia Lambas, Diego Rodolfo; Padilla, Nelson David; Future virialized structures: an analysis of superstructures in the SDSS-DR7; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 415; 1; 7-2011; 964-976
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/http://mnras.oxfordjournals.org/content/415/1/964.full
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2011.18794.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
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 12.952241

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