Quasars as Cosmological Standard Candles

We propose the use of quasars with accretion rate near the Eddington ratio (extreme quasars) as standard candles. The selection criteria are based on the Eigenvector 1 (E1) formalism. Our first sample is a selection of 334 optical quasar spectra from the SDSS DR7 database with a S/N > 20. Using t...

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Detalles Bibliográficos
Autores: Negrete, C. Alenka, Dultzin, Deborah, Marziani, Paola, Sulentic, Jack W., Esparza-Arredondo, Donaji, Martínez-Aldama, M. L., del Olmo, A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/381983
Acceso en línea:http://hdl.handle.net/10261/381983
Access Level:acceso abierto
Palabra clave:Quasars: general
Quasars: emission lines
Quasars: broad lines
Quasar: extreme accretors
Quasars: NLSy1
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spelling Quasars as Cosmological Standard CandlesNegrete, C. AlenkaDultzin, DeborahMarziani, PaolaSulentic, Jack W.Esparza-Arredondo, DonajiMartínez-Aldama, M. L.del Olmo, A.Quasars: generalQuasars: emission linesQuasars: broad linesQuasar: extreme accretorsQuasars: NLSy1We propose the use of quasars with accretion rate near the Eddington ratio (extreme quasars) as standard candles. The selection criteria are based on the Eigenvector 1 (E1) formalism. Our first sample is a selection of 334 optical quasar spectra from the SDSS DR7 database with a S/N > 20. Using the E1, we define primary and secondary selection criteria in the optical spectral range. We show that it is possible to derive a redshift-independent estimate of luminosity for extreme Eddington ratio sources. Our results are consistent with concordance cosmology but we need to work with other spectral ranges to take into account the quasar orientation, among other constrains. © 2017 Negrete, Dultzin, Marziani, Sulentic, Esparza-Arredondo, Martínez-Aldama and Del Olmo.CN and DD acknowledge support from grants IN107313 PAPIIT, DGAPA UNAM and CONACYT project 221398. CN acknowledge support from DGAPA-UNAM grants IN111514 and IN113417. DE-A and MM-A acknowledges the doctoral and postdoctoral grant from the CONACyT, respectively. MM-A and AD acknowledge financial support from Spanish Ministry for Economy and Competitiveness through grants AYA2013-42227- P and AYA2016-76682- C3-3-1-P.Frontiers MediaUniversidad Nacional Autónoma de MéxicoConsejo Nacional de Ciencia y Tecnología (México)Ministerio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2025202520172025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/381983reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO//AYA2013-42227-Pinfo:eu-repo/grantAgreement/AEI//AYA2016-76682-C3-3-1-Phttp://dx.doi.org/10.3389/fspas.2017.00059Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3819832026-05-22T06:33:51Z
dc.title.none.fl_str_mv Quasars as Cosmological Standard Candles
title Quasars as Cosmological Standard Candles
spellingShingle Quasars as Cosmological Standard Candles
Negrete, C. Alenka
Quasars: general
Quasars: emission lines
Quasars: broad lines
Quasar: extreme accretors
Quasars: NLSy1
title_short Quasars as Cosmological Standard Candles
title_full Quasars as Cosmological Standard Candles
title_fullStr Quasars as Cosmological Standard Candles
title_full_unstemmed Quasars as Cosmological Standard Candles
title_sort Quasars as Cosmological Standard Candles
dc.creator.none.fl_str_mv Negrete, C. Alenka
Dultzin, Deborah
Marziani, Paola
Sulentic, Jack W.
Esparza-Arredondo, Donaji
Martínez-Aldama, M. L.
del Olmo, A.
author Negrete, C. Alenka
author_facet Negrete, C. Alenka
Dultzin, Deborah
Marziani, Paola
Sulentic, Jack W.
Esparza-Arredondo, Donaji
Martínez-Aldama, M. L.
del Olmo, A.
author_role author
author2 Dultzin, Deborah
Marziani, Paola
Sulentic, Jack W.
Esparza-Arredondo, Donaji
Martínez-Aldama, M. L.
del Olmo, A.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Nacional Autónoma de México
Consejo Nacional de Ciencia y Tecnología (México)
Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Quasars: general
Quasars: emission lines
Quasars: broad lines
Quasar: extreme accretors
Quasars: NLSy1
topic Quasars: general
Quasars: emission lines
Quasars: broad lines
Quasar: extreme accretors
Quasars: NLSy1
description We propose the use of quasars with accretion rate near the Eddington ratio (extreme quasars) as standard candles. The selection criteria are based on the Eigenvector 1 (E1) formalism. Our first sample is a selection of 334 optical quasar spectra from the SDSS DR7 database with a S/N > 20. Using the E1, we define primary and secondary selection criteria in the optical spectral range. We show that it is possible to derive a redshift-independent estimate of luminosity for extreme Eddington ratio sources. Our results are consistent with concordance cosmology but we need to work with other spectral ranges to take into account the quasar orientation, among other constrains. © 2017 Negrete, Dultzin, Marziani, Sulentic, Esparza-Arredondo, Martínez-Aldama and Del Olmo.
publishDate 2017
dc.date.none.fl_str_mv 2017
2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/381983
url http://hdl.handle.net/10261/381983
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO//AYA2013-42227-P
info:eu-repo/grantAgreement/AEI//AYA2016-76682-C3-3-1-P
http://dx.doi.org/10.3389/fspas.2017.00059
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Frontiers Media
publisher.none.fl_str_mv Frontiers Media
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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