Optical spectroscopic observations of gamma-ray blazar candidates, X: results from the 2018–2019 SOAR and OAN-SPM observations of blazar candidates of uncertain type

Autores
de Menezes, Raniere; Amaya Almazán, R. A.; Marchesini, Ezequiel Joaquín; Peña Herazo, H. A.; Massaro, F.; Chavushyan, V.; Paggi, A.; Landoni, M.; Masetti, N.; Ricci, F.; D'Abrusco, R.; La Franca, F.; Smith, Howard A.; Milisavljevic, D.; Tosti, G.; Jiménez Bailón, E.; Cheung, C. C.
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The fourth Fermi Large Area Telescope Source Catalog (4FGL) lists over 5000 γ-ray sources with statistical significance above 4 σ. About 23% of the sources listed in this catalog are unidentified/unassociated γ-ray sources while ∼26% of the sources are classified as blazar candidates of uncertain type (BCUs), lacking optical spectroscopic information. To probe the blazar nature of candidate counterparts of UGSs and BCUs, we started our optical spectroscopic follow up campaign in 2012, which up to date account for more than 350 observed sources. In this paper, the tenth of our campaign, we report on the spectroscopic observations of 37 sources, mostly BCUs, whose observations were carried out predominantly at the Observatorio Astronómico Nacional San Pedro Mártir and the Southern Astrophysical Research Observatory between August 2018 and September 2019. We confirm the BL Lac nature of 27 sources and the flat spectrum radio quasar nature of three sources. The remaining ones are classified as six BL Lacs galaxy-dominated and one normal galaxy. We were also able to measure the redshifts for 20 sources, including 10 BL Lacs. As in previous analyses, the largest fraction of BCUs revealed to be BL Lac objects.
Fil: de Menezes, Raniere. Universidade de Sao Paulo; Brasil. Università di Torino; Italia
Fil: Amaya Almazán, R. A.. Instituto Nacional de Astrofisica Optica y Electronica; México
Fil: Marchesini, Ezequiel Joaquín. Università di Torino; Italia. 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
Fil: Peña Herazo, H. A.. Istituto Nazionale di Astrofisica; Italia. Università di Torino; Italia
Fil: Massaro, F.. Istituto Nazionale di Astrofisica; Italia. Università di Torino; Italia
Fil: Chavushyan, V.. Instituto Nacional de Astrofisica Optica y Electronica; México
Fil: Paggi, A.. Istituto Nazionale di Astrofisica; Italia
Fil: Landoni, M.. Osservatorio Astronomico Di Brera; Italia
Fil: Masetti, N.. Inaf Istituto Di Astrofisica Spaziale E Fisica Cosmica, Bologna; Italia. Universidad Andrés Bello; Chile
Fil: Ricci, F.. Universidad Católica de Chile; Chile
Fil: D'Abrusco, R.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: La Franca, F.. Università Degli Studi Roma Tre; Italia
Fil: Smith, Howard A.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Milisavljevic, D.. College Of Science; Italia
Fil: Tosti, G.. Università di Perugia; Italia
Fil: Jiménez Bailón, E.. Universidad Nacional Autónoma de México; México
Fil: Cheung, C. C.. Spece Sciences División. Naval Research Laboratory; Estados Unidos
Materia
GALAXIES: ACTIVE
GALAXIES: BL LACERTAE OBJECTS
QUASARS: GENERAL
RADIATION MECHANISMS: NON-THERMAL
SURVEYS
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:11336/145947
Acceder
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spelling Optical spectroscopic observations of gamma-ray blazar candidates, X: results from the 2018–2019 SOAR and OAN-SPM observations of blazar candidates of uncertain typede Menezes, RaniereAmaya Almazán, R. A.Marchesini, Ezequiel JoaquínPeña Herazo, H. A.Massaro, F.Chavushyan, V.Paggi, A.Landoni, M.Masetti, N.Ricci, F.D'Abrusco, R.La Franca, F.Smith, Howard A.Milisavljevic, D.Tosti, G.Jiménez Bailón, E.Cheung, C. C.GALAXIES: ACTIVEGALAXIES: BL LACERTAE OBJECTSQUASARS: GENERALRADIATION MECHANISMS: NON-THERMALSURVEYShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The fourth Fermi Large Area Telescope Source Catalog (4FGL) lists over 5000 γ-ray sources with statistical significance above 4 σ. About 23% of the sources listed in this catalog are unidentified/unassociated γ-ray sources while ∼26% of the sources are classified as blazar candidates of uncertain type (BCUs), lacking optical spectroscopic information. To probe the blazar nature of candidate counterparts of UGSs and BCUs, we started our optical spectroscopic follow up campaign in 2012, which up to date account for more than 350 observed sources. In this paper, the tenth of our campaign, we report on the spectroscopic observations of 37 sources, mostly BCUs, whose observations were carried out predominantly at the Observatorio Astronómico Nacional San Pedro Mártir and the Southern Astrophysical Research Observatory between August 2018 and September 2019. We confirm the BL Lac nature of 27 sources and the flat spectrum radio quasar nature of three sources. The remaining ones are classified as six BL Lacs galaxy-dominated and one normal galaxy. We were also able to measure the redshifts for 20 sources, including 10 BL Lacs. As in previous analyses, the largest fraction of BCUs revealed to be BL Lac objects.Fil: de Menezes, Raniere. Universidade de Sao Paulo; Brasil. Università di Torino; ItaliaFil: Amaya Almazán, R. A.. Instituto Nacional de Astrofisica Optica y Electronica; MéxicoFil: Marchesini, Ezequiel Joaquín. Università di Torino; Italia. 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; ArgentinaFil: Peña Herazo, H. A.. Istituto Nazionale di Astrofisica; Italia. Università di Torino; ItaliaFil: Massaro, F.. Istituto Nazionale di Astrofisica; Italia. Università di Torino; ItaliaFil: Chavushyan, V.. Instituto Nacional de Astrofisica Optica y Electronica; MéxicoFil: Paggi, A.. Istituto Nazionale di Astrofisica; ItaliaFil: Landoni, M.. Osservatorio Astronomico Di Brera; ItaliaFil: Masetti, N.. Inaf Istituto Di Astrofisica Spaziale E Fisica Cosmica, Bologna; Italia. Universidad Andrés Bello; ChileFil: Ricci, F.. Universidad Católica de Chile; ChileFil: D'Abrusco, R.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: La Franca, F.. Università Degli Studi Roma Tre; ItaliaFil: Smith, Howard A.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Milisavljevic, D.. College Of Science; ItaliaFil: Tosti, G.. Università di Perugia; ItaliaFil: Jiménez Bailón, E.. Universidad Nacional Autónoma de México; MéxicoFil: Cheung, C. C.. Spece Sciences División. Naval Research Laboratory; Estados UnidosSpringer2020-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/145947de Menezes, Raniere; Amaya Almazán, R. A.; Marchesini, Ezequiel Joaquín; Peña Herazo, H. A.; Massaro, F.; et al.; Optical spectroscopic observations of gamma-ray blazar candidates, X: results from the 2018–2019 SOAR and OAN-SPM observations of blazar candidates of uncertain type; Springer; Astrophysics And Space Science; 365; 1; 1-2020; 1-240004-640XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/s10509-020-3727-5info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10509-020-3727-5info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/2003.12629info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:07:30Zoai:ri.conicet.gov.ar:11336/145947instacron: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 12:07:31.2CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Optical spectroscopic observations of gamma-ray blazar candidates, X: results from the 2018–2019 SOAR and OAN-SPM observations of blazar candidates of uncertain type
title Optical spectroscopic observations of gamma-ray blazar candidates, X: results from the 2018–2019 SOAR and OAN-SPM observations of blazar candidates of uncertain type
spellingShingle Optical spectroscopic observations of gamma-ray blazar candidates, X: results from the 2018–2019 SOAR and OAN-SPM observations of blazar candidates of uncertain type
de Menezes, Raniere
GALAXIES: ACTIVE
GALAXIES: BL LACERTAE OBJECTS
QUASARS: GENERAL
RADIATION MECHANISMS: NON-THERMAL
SURVEYS
title_short Optical spectroscopic observations of gamma-ray blazar candidates, X: results from the 2018–2019 SOAR and OAN-SPM observations of blazar candidates of uncertain type
title_full Optical spectroscopic observations of gamma-ray blazar candidates, X: results from the 2018–2019 SOAR and OAN-SPM observations of blazar candidates of uncertain type
title_fullStr Optical spectroscopic observations of gamma-ray blazar candidates, X: results from the 2018–2019 SOAR and OAN-SPM observations of blazar candidates of uncertain type
title_full_unstemmed Optical spectroscopic observations of gamma-ray blazar candidates, X: results from the 2018–2019 SOAR and OAN-SPM observations of blazar candidates of uncertain type
title_sort Optical spectroscopic observations of gamma-ray blazar candidates, X: results from the 2018–2019 SOAR and OAN-SPM observations of blazar candidates of uncertain type
dc.creator.none.fl_str_mv de Menezes, Raniere
Amaya Almazán, R. A.
Marchesini, Ezequiel Joaquín
Peña Herazo, H. A.
Massaro, F.
Chavushyan, V.
Paggi, A.
Landoni, M.
Masetti, N.
Ricci, F.
D'Abrusco, R.
La Franca, F.
Smith, Howard A.
Milisavljevic, D.
Tosti, G.
Jiménez Bailón, E.
Cheung, C. C.
author de Menezes, Raniere
author_facet de Menezes, Raniere
Amaya Almazán, R. A.
Marchesini, Ezequiel Joaquín
Peña Herazo, H. A.
Massaro, F.
Chavushyan, V.
Paggi, A.
Landoni, M.
Masetti, N.
Ricci, F.
D'Abrusco, R.
La Franca, F.
Smith, Howard A.
Milisavljevic, D.
Tosti, G.
Jiménez Bailón, E.
Cheung, C. C.
author_role author
author2 Amaya Almazán, R. A.
Marchesini, Ezequiel Joaquín
Peña Herazo, H. A.
Massaro, F.
Chavushyan, V.
Paggi, A.
Landoni, M.
Masetti, N.
Ricci, F.
D'Abrusco, R.
La Franca, F.
Smith, Howard A.
Milisavljevic, D.
Tosti, G.
Jiménez Bailón, E.
Cheung, C. C.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv GALAXIES: ACTIVE
GALAXIES: BL LACERTAE OBJECTS
QUASARS: GENERAL
RADIATION MECHANISMS: NON-THERMAL
SURVEYS
topic GALAXIES: ACTIVE
GALAXIES: BL LACERTAE OBJECTS
QUASARS: GENERAL
RADIATION MECHANISMS: NON-THERMAL
SURVEYS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The fourth Fermi Large Area Telescope Source Catalog (4FGL) lists over 5000 γ-ray sources with statistical significance above 4 σ. About 23% of the sources listed in this catalog are unidentified/unassociated γ-ray sources while ∼26% of the sources are classified as blazar candidates of uncertain type (BCUs), lacking optical spectroscopic information. To probe the blazar nature of candidate counterparts of UGSs and BCUs, we started our optical spectroscopic follow up campaign in 2012, which up to date account for more than 350 observed sources. In this paper, the tenth of our campaign, we report on the spectroscopic observations of 37 sources, mostly BCUs, whose observations were carried out predominantly at the Observatorio Astronómico Nacional San Pedro Mártir and the Southern Astrophysical Research Observatory between August 2018 and September 2019. We confirm the BL Lac nature of 27 sources and the flat spectrum radio quasar nature of three sources. The remaining ones are classified as six BL Lacs galaxy-dominated and one normal galaxy. We were also able to measure the redshifts for 20 sources, including 10 BL Lacs. As in previous analyses, the largest fraction of BCUs revealed to be BL Lac objects.
Fil: de Menezes, Raniere. Universidade de Sao Paulo; Brasil. Università di Torino; Italia
Fil: Amaya Almazán, R. A.. Instituto Nacional de Astrofisica Optica y Electronica; México
Fil: Marchesini, Ezequiel Joaquín. Università di Torino; Italia. 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
Fil: Peña Herazo, H. A.. Istituto Nazionale di Astrofisica; Italia. Università di Torino; Italia
Fil: Massaro, F.. Istituto Nazionale di Astrofisica; Italia. Università di Torino; Italia
Fil: Chavushyan, V.. Instituto Nacional de Astrofisica Optica y Electronica; México
Fil: Paggi, A.. Istituto Nazionale di Astrofisica; Italia
Fil: Landoni, M.. Osservatorio Astronomico Di Brera; Italia
Fil: Masetti, N.. Inaf Istituto Di Astrofisica Spaziale E Fisica Cosmica, Bologna; Italia. Universidad Andrés Bello; Chile
Fil: Ricci, F.. Universidad Católica de Chile; Chile
Fil: D'Abrusco, R.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: La Franca, F.. Università Degli Studi Roma Tre; Italia
Fil: Smith, Howard A.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Milisavljevic, D.. College Of Science; Italia
Fil: Tosti, G.. Università di Perugia; Italia
Fil: Jiménez Bailón, E.. Universidad Nacional Autónoma de México; México
Fil: Cheung, C. C.. Spece Sciences División. Naval Research Laboratory; Estados Unidos
description The fourth Fermi Large Area Telescope Source Catalog (4FGL) lists over 5000 γ-ray sources with statistical significance above 4 σ. About 23% of the sources listed in this catalog are unidentified/unassociated γ-ray sources while ∼26% of the sources are classified as blazar candidates of uncertain type (BCUs), lacking optical spectroscopic information. To probe the blazar nature of candidate counterparts of UGSs and BCUs, we started our optical spectroscopic follow up campaign in 2012, which up to date account for more than 350 observed sources. In this paper, the tenth of our campaign, we report on the spectroscopic observations of 37 sources, mostly BCUs, whose observations were carried out predominantly at the Observatorio Astronómico Nacional San Pedro Mártir and the Southern Astrophysical Research Observatory between August 2018 and September 2019. We confirm the BL Lac nature of 27 sources and the flat spectrum radio quasar nature of three sources. The remaining ones are classified as six BL Lacs galaxy-dominated and one normal galaxy. We were also able to measure the redshifts for 20 sources, including 10 BL Lacs. As in previous analyses, the largest fraction of BCUs revealed to be BL Lac objects.
publishDate 2020
dc.date.none.fl_str_mv 2020-01
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/11336/145947
de Menezes, Raniere; Amaya Almazán, R. A.; Marchesini, Ezequiel Joaquín; Peña Herazo, H. A.; Massaro, F.; et al.; Optical spectroscopic observations of gamma-ray blazar candidates, X: results from the 2018–2019 SOAR and OAN-SPM observations of blazar candidates of uncertain type; Springer; Astrophysics And Space Science; 365; 1; 1-2020; 1-24
0004-640X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/145947
identifier_str_mv de Menezes, Raniere; Amaya Almazán, R. A.; Marchesini, Ezequiel Joaquín; Peña Herazo, H. A.; Massaro, F.; et al.; Optical spectroscopic observations of gamma-ray blazar candidates, X: results from the 2018–2019 SOAR and OAN-SPM observations of blazar candidates of uncertain type; Springer; Astrophysics And Space Science; 365; 1; 1-2020; 1-24
0004-640X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/s10509-020-3727-5
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10509-020-3727-5
info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/2003.12629
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 Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
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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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