Radio Luminosity Function of Flat-spectrum Radio Quasars

Autores
Mao, Peiyuan; Urry, C. Megan; Marchesini, Ezequiel Joaquín; Landoni, Marco; Massaro, Francesco; Ajello, Marco
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present the radio luminosity function (LF) of flat-spectrum radio quasars (FSRQ), using the the largest and most complete sample to date. Cross-matching between the FIRST 20 cm and GB6 6 cm radio surveys, we find 638 flat-spectrum radio sources above 220 mJy at 1.4 GHz; of these, 327 are are classified and verified using optical spectroscopy data, mainly from Sloan Digital Sky Survey Data Release 12. We also considered flat-spectrum radio sources that lack both literature references and optical spectroscopy, and we identified 12 out of the 43 such sources to potentially be FSRQs, using their WISE colors. From the fully identified sample of 242 FSRQs, we derived the radio LF and cosmic evolution of blazars at 1.4 GHz, finding good agreement with previous work at 5 GHz. The number density of FSRQs increases dramatically to a redshift of z ∼ 2 and then declines for higher redshifts. Furthermore, the redshift at which the quasar density peaks is clearly dependent on luminosity, with more luminous sources peaking at higher redshifts. The approximate best-fit LF for a luminosity-dependent evolutionary model is a broken power-law with slopes ∼0.7 and ∼1.7 below and above the break luminosity, log L1.4 ∼ 43.8 erg s-1, respectively.
Fil: Mao, Peiyuan. Yale Center For Astronomy And Astrophysics; Estados Unidos
Fil: Urry, C. Megan. Yale Center For Astronomy And Astrophysics; Estados Unidos
Fil: Marchesini, Ezequiel Joaquín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino; Italia. Inaf Istituto Di Astrofisica Spaziale E Fisica Cosmica; Italia. Università di Torino; Italia
Fil: Landoni, Marco. Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino; . Università di Torino; Italia
Fil: Massaro, Francesco. Università di Torino; Italia. Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino; Italia
Fil: Ajello, Marco. Clemson University; Estados Unidos
Materia
COSMOLOGY: OBSERVATIONS
GALAXIES: ACTIVE
GALAXIES: JETS
QUASARS: GENERAL
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:11336/69481
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/69481
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Radio Luminosity Function of Flat-spectrum Radio QuasarsMao, PeiyuanUrry, C. MeganMarchesini, Ezequiel JoaquínLandoni, MarcoMassaro, FrancescoAjello, MarcoCOSMOLOGY: OBSERVATIONSGALAXIES: ACTIVEGALAXIES: JETSQUASARS: GENERALhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present the radio luminosity function (LF) of flat-spectrum radio quasars (FSRQ), using the the largest and most complete sample to date. Cross-matching between the FIRST 20 cm and GB6 6 cm radio surveys, we find 638 flat-spectrum radio sources above 220 mJy at 1.4 GHz; of these, 327 are are classified and verified using optical spectroscopy data, mainly from Sloan Digital Sky Survey Data Release 12. We also considered flat-spectrum radio sources that lack both literature references and optical spectroscopy, and we identified 12 out of the 43 such sources to potentially be FSRQs, using their WISE colors. From the fully identified sample of 242 FSRQs, we derived the radio LF and cosmic evolution of blazars at 1.4 GHz, finding good agreement with previous work at 5 GHz. The number density of FSRQs increases dramatically to a redshift of z ∼ 2 and then declines for higher redshifts. Furthermore, the redshift at which the quasar density peaks is clearly dependent on luminosity, with more luminous sources peaking at higher redshifts. The approximate best-fit LF for a luminosity-dependent evolutionary model is a broken power-law with slopes ∼0.7 and ∼1.7 below and above the break luminosity, log L1.4 ∼ 43.8 erg s-1, respectively.Fil: Mao, Peiyuan. Yale Center For Astronomy And Astrophysics; Estados UnidosFil: Urry, C. Megan. Yale Center For Astronomy And Astrophysics; Estados UnidosFil: Marchesini, Ezequiel Joaquín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino; Italia. Inaf Istituto Di Astrofisica Spaziale E Fisica Cosmica; Italia. Università di Torino; ItaliaFil: Landoni, Marco. Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino; . Università di Torino; ItaliaFil: Massaro, Francesco. Università di Torino; Italia. Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino; ItaliaFil: Ajello, Marco. Clemson University; Estados UnidosIOP Publishing2017-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/69481Mao, Peiyuan; Urry, C. Megan; Marchesini, Ezequiel Joaquín; Landoni, Marco; Massaro, Francesco; et al.; Radio Luminosity Function of Flat-spectrum Radio Quasars; IOP Publishing; Astrophysical Journal; 842; 2; 6-2017; 1-140004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/aa74b8info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/aa74b8info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:22:06Zoai:ri.conicet.gov.ar:11336/69481instacron: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 11:22:06.346CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Radio Luminosity Function of Flat-spectrum Radio Quasars
title Radio Luminosity Function of Flat-spectrum Radio Quasars
spellingShingle Radio Luminosity Function of Flat-spectrum Radio Quasars
Mao, Peiyuan
COSMOLOGY: OBSERVATIONS
GALAXIES: ACTIVE
GALAXIES: JETS
QUASARS: GENERAL
title_short Radio Luminosity Function of Flat-spectrum Radio Quasars
title_full Radio Luminosity Function of Flat-spectrum Radio Quasars
title_fullStr Radio Luminosity Function of Flat-spectrum Radio Quasars
title_full_unstemmed Radio Luminosity Function of Flat-spectrum Radio Quasars
title_sort Radio Luminosity Function of Flat-spectrum Radio Quasars
dc.creator.none.fl_str_mv Mao, Peiyuan
Urry, C. Megan
Marchesini, Ezequiel Joaquín
Landoni, Marco
Massaro, Francesco
Ajello, Marco
author Mao, Peiyuan
author_facet Mao, Peiyuan
Urry, C. Megan
Marchesini, Ezequiel Joaquín
Landoni, Marco
Massaro, Francesco
Ajello, Marco
author_role author
author2 Urry, C. Megan
Marchesini, Ezequiel Joaquín
Landoni, Marco
Massaro, Francesco
Ajello, Marco
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv COSMOLOGY: OBSERVATIONS
GALAXIES: ACTIVE
GALAXIES: JETS
QUASARS: GENERAL
topic COSMOLOGY: OBSERVATIONS
GALAXIES: ACTIVE
GALAXIES: JETS
QUASARS: GENERAL
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 present the radio luminosity function (LF) of flat-spectrum radio quasars (FSRQ), using the the largest and most complete sample to date. Cross-matching between the FIRST 20 cm and GB6 6 cm radio surveys, we find 638 flat-spectrum radio sources above 220 mJy at 1.4 GHz; of these, 327 are are classified and verified using optical spectroscopy data, mainly from Sloan Digital Sky Survey Data Release 12. We also considered flat-spectrum radio sources that lack both literature references and optical spectroscopy, and we identified 12 out of the 43 such sources to potentially be FSRQs, using their WISE colors. From the fully identified sample of 242 FSRQs, we derived the radio LF and cosmic evolution of blazars at 1.4 GHz, finding good agreement with previous work at 5 GHz. The number density of FSRQs increases dramatically to a redshift of z ∼ 2 and then declines for higher redshifts. Furthermore, the redshift at which the quasar density peaks is clearly dependent on luminosity, with more luminous sources peaking at higher redshifts. The approximate best-fit LF for a luminosity-dependent evolutionary model is a broken power-law with slopes ∼0.7 and ∼1.7 below and above the break luminosity, log L1.4 ∼ 43.8 erg s-1, respectively.
Fil: Mao, Peiyuan. Yale Center For Astronomy And Astrophysics; Estados Unidos
Fil: Urry, C. Megan. Yale Center For Astronomy And Astrophysics; Estados Unidos
Fil: Marchesini, Ezequiel Joaquín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino; Italia. Inaf Istituto Di Astrofisica Spaziale E Fisica Cosmica; Italia. Università di Torino; Italia
Fil: Landoni, Marco. Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino; . Università di Torino; Italia
Fil: Massaro, Francesco. Università di Torino; Italia. Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino; Italia
Fil: Ajello, Marco. Clemson University; Estados Unidos
description We present the radio luminosity function (LF) of flat-spectrum radio quasars (FSRQ), using the the largest and most complete sample to date. Cross-matching between the FIRST 20 cm and GB6 6 cm radio surveys, we find 638 flat-spectrum radio sources above 220 mJy at 1.4 GHz; of these, 327 are are classified and verified using optical spectroscopy data, mainly from Sloan Digital Sky Survey Data Release 12. We also considered flat-spectrum radio sources that lack both literature references and optical spectroscopy, and we identified 12 out of the 43 such sources to potentially be FSRQs, using their WISE colors. From the fully identified sample of 242 FSRQs, we derived the radio LF and cosmic evolution of blazars at 1.4 GHz, finding good agreement with previous work at 5 GHz. The number density of FSRQs increases dramatically to a redshift of z ∼ 2 and then declines for higher redshifts. Furthermore, the redshift at which the quasar density peaks is clearly dependent on luminosity, with more luminous sources peaking at higher redshifts. The approximate best-fit LF for a luminosity-dependent evolutionary model is a broken power-law with slopes ∼0.7 and ∼1.7 below and above the break luminosity, log L1.4 ∼ 43.8 erg s-1, respectively.
publishDate 2017
dc.date.none.fl_str_mv 2017-06
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/11336/69481
Mao, Peiyuan; Urry, C. Megan; Marchesini, Ezequiel Joaquín; Landoni, Marco; Massaro, Francesco; et al.; Radio Luminosity Function of Flat-spectrum Radio Quasars; IOP Publishing; Astrophysical Journal; 842; 2; 6-2017; 1-14
0004-637X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/69481
identifier_str_mv Mao, Peiyuan; Urry, C. Megan; Marchesini, Ezequiel Joaquín; Landoni, Marco; Massaro, Francesco; et al.; Radio Luminosity Function of Flat-spectrum Radio Quasars; IOP Publishing; Astrophysical Journal; 842; 2; 6-2017; 1-14
0004-637X
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://iopscience.iop.org/article/10.3847/1538-4357/aa74b8
info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/aa74b8
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 IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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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