Optical spectroscopic observations of gamma-ray blazar candidates. VII. Follow-up campaign in the southern hemisphere

Autores
Peña-Herazo, H.A.; Marchesini, Ezequiel Joaquín; Álvarez Crespo, N.; Ricci, F.; Massaro, F.; Chavushyan, V.; Landoni, M.; Strader, J.; Chomiuk, L.; Cheung, C.C.; Masetti, N.; Jiménez Bailón, E.; DAbrusco, R.; Paggi, A.; Milisavljevic, D.; La Franca, F.; Smith, H.A.; Tosti, G.
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Searching for low energy counterparts of γ-rays sources is one of the major challenges in modern γ-ray astronomy. In the third Fermi source catalog about 30% of detected sources are unidentified/unassociated Gamma-ray Sources (UGSs). We recently started an optical spectroscopic follow up campaign to confirm the blazar-like nature of candidates counterparts of UGSs. Here we report the spectra of 61 targets collected with the Southern Astrophysical Research Telescope (SOAR) between 2014 and the 2017. Our sample includes 33 potential counterparts of UGSs, selected on the basis of WISE colors, and 27 blazar candidates of uncertain type associated with gamma-ray sources of the last release of the Fermi catalog. We confirm the BZB nature of 20 sources lying within the positional uncertainty region of the UGSs. All the observed BCUs show blazar-like spectra, classified as 2 BZQs and 25 BZBs, for which we obtained 6 redshift estimates. Within the BCUs observations we report the redshift estimate for the BZB associated with, 3FGL J1106.4-3643 that is the second most distant BL Lac known to date, at z≥ 1.084.
Fil: Peña-Herazo, H.A.. Università degli Studi di Torino; Italia. Sezione di Torino; Italia. Instituto Nacional de Astrofísica, Óptica y Electrónica; México
Fil: Marchesini, Ezequiel Joaquín. Università degli Studi di Torino; Italia. Sezione 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. Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna; Italia
Fil: Álvarez Crespo, N.. Università degli Studi di Torino; Italia. Sezione di Torino; Italia
Fil: Ricci, F.. Università Roma Tre; Italia
Fil: Massaro, F.. Università degli Studi di Torino; Italia. Sezione di Torino; Italia
Fil: Chavushyan, V.. Instituto Nacional de Astrofísica, Óptica y Electrónica; México
Fil: Landoni, M.. Osservatorio Astronomico di Brera; Italia
Fil: Strader, J.. Michigan State University; Estados Unidos
Fil: Chomiuk, L.. Michigan State University; Estados Unidos
Fil: Cheung, C.C.. Spece Sciences División. Naval Research Laboratory; Estados Unidos
Fil: Masetti, N.. Universidad Andrés Bello; Chile. Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna; Italia
Fil: Jiménez Bailón, E.. Universidad Nacional Autónoma de México; México
Fil: DAbrusco, R.. Università degli Studi di Napoli Federico II; Italia
Fil: Paggi, A.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Milisavljevic, D.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: La Franca, F.. Università Roma Tre; Italia
Fil: Smith, H.A.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Tosti, G.. Università degli Studi di Perugia; Italia
Materia
Galaxies: Active
Galaxies: Bl Lacertae Objects
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:11336/49985
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/49985
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Optical spectroscopic observations of gamma-ray blazar candidates. VII. Follow-up campaign in the southern hemispherePeña-Herazo, H.A.Marchesini, Ezequiel JoaquínÁlvarez Crespo, N.Ricci, F.Massaro, F.Chavushyan, V.Landoni, M.Strader, J.Chomiuk, L.Cheung, C.C.Masetti, N.Jiménez Bailón, E.DAbrusco, R.Paggi, A.Milisavljevic, D.La Franca, F.Smith, H.A.Tosti, G.Galaxies: ActiveGalaxies: Bl Lacertae ObjectsQuasars: Generalhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Searching for low energy counterparts of γ-rays sources is one of the major challenges in modern γ-ray astronomy. In the third Fermi source catalog about 30% of detected sources are unidentified/unassociated Gamma-ray Sources (UGSs). We recently started an optical spectroscopic follow up campaign to confirm the blazar-like nature of candidates counterparts of UGSs. Here we report the spectra of 61 targets collected with the Southern Astrophysical Research Telescope (SOAR) between 2014 and the 2017. Our sample includes 33 potential counterparts of UGSs, selected on the basis of WISE colors, and 27 blazar candidates of uncertain type associated with gamma-ray sources of the last release of the Fermi catalog. We confirm the BZB nature of 20 sources lying within the positional uncertainty region of the UGSs. All the observed BCUs show blazar-like spectra, classified as 2 BZQs and 25 BZBs, for which we obtained 6 redshift estimates. Within the BCUs observations we report the redshift estimate for the BZB associated with, 3FGL J1106.4-3643 that is the second most distant BL Lac known to date, at z≥ 1.084.Fil: Peña-Herazo, H.A.. Università degli Studi di Torino; Italia. Sezione di Torino; Italia. Instituto Nacional de Astrofísica, Óptica y Electrónica; MéxicoFil: Marchesini, Ezequiel Joaquín. Università degli Studi di Torino; Italia. Sezione 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. Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna; ItaliaFil: Álvarez Crespo, N.. Università degli Studi di Torino; Italia. Sezione di Torino; ItaliaFil: Ricci, F.. Università Roma Tre; ItaliaFil: Massaro, F.. Università degli Studi di Torino; Italia. Sezione di Torino; ItaliaFil: Chavushyan, V.. Instituto Nacional de Astrofísica, Óptica y Electrónica; MéxicoFil: Landoni, M.. Osservatorio Astronomico di Brera; ItaliaFil: Strader, J.. Michigan State University; Estados UnidosFil: Chomiuk, L.. Michigan State University; Estados UnidosFil: Cheung, C.C.. Spece Sciences División. Naval Research Laboratory; Estados UnidosFil: Masetti, N.. Universidad Andrés Bello; Chile. Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna; ItaliaFil: Jiménez Bailón, E.. Universidad Nacional Autónoma de México; MéxicoFil: DAbrusco, R.. Università degli Studi di Napoli Federico II; ItaliaFil: Paggi, A.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Milisavljevic, D.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: La Franca, F.. Università Roma Tre; ItaliaFil: Smith, H.A.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Tosti, G.. Università degli Studi di Perugia; ItaliaSpringer2017-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/49985Peña-Herazo, H.A.; Marchesini, Ezequiel Joaquín; Álvarez Crespo, N.; Ricci, F.; Massaro, F.; et al.; Optical spectroscopic observations of gamma-ray blazar candidates. VII. Follow-up campaign in the southern hemisphere; Springer; Astrophysics And Space Science; 362; 12; 12-20170004-640XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/s10509-017-3208-7info:eu-repo/semantics/altIdentifier/url/ps://link.springer.com/article/10.1007%2Fs10509-017-3208-7info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:08:08Zoai:ri.conicet.gov.ar:11336/49985instacron: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 12:08:08.403CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Optical spectroscopic observations of gamma-ray blazar candidates. VII. Follow-up campaign in the southern hemisphere
title Optical spectroscopic observations of gamma-ray blazar candidates. VII. Follow-up campaign in the southern hemisphere
spellingShingle Optical spectroscopic observations of gamma-ray blazar candidates. VII. Follow-up campaign in the southern hemisphere
Peña-Herazo, H.A.
Galaxies: Active
Galaxies: Bl Lacertae Objects
Quasars: General
title_short Optical spectroscopic observations of gamma-ray blazar candidates. VII. Follow-up campaign in the southern hemisphere
title_full Optical spectroscopic observations of gamma-ray blazar candidates. VII. Follow-up campaign in the southern hemisphere
title_fullStr Optical spectroscopic observations of gamma-ray blazar candidates. VII. Follow-up campaign in the southern hemisphere
title_full_unstemmed Optical spectroscopic observations of gamma-ray blazar candidates. VII. Follow-up campaign in the southern hemisphere
title_sort Optical spectroscopic observations of gamma-ray blazar candidates. VII. Follow-up campaign in the southern hemisphere
dc.creator.none.fl_str_mv Peña-Herazo, H.A.
Marchesini, Ezequiel Joaquín
Álvarez Crespo, N.
Ricci, F.
Massaro, F.
Chavushyan, V.
Landoni, M.
Strader, J.
Chomiuk, L.
Cheung, C.C.
Masetti, N.
Jiménez Bailón, E.
DAbrusco, R.
Paggi, A.
Milisavljevic, D.
La Franca, F.
Smith, H.A.
Tosti, G.
author Peña-Herazo, H.A.
author_facet Peña-Herazo, H.A.
Marchesini, Ezequiel Joaquín
Álvarez Crespo, N.
Ricci, F.
Massaro, F.
Chavushyan, V.
Landoni, M.
Strader, J.
Chomiuk, L.
Cheung, C.C.
Masetti, N.
Jiménez Bailón, E.
DAbrusco, R.
Paggi, A.
Milisavljevic, D.
La Franca, F.
Smith, H.A.
Tosti, G.
author_role author
author2 Marchesini, Ezequiel Joaquín
Álvarez Crespo, N.
Ricci, F.
Massaro, F.
Chavushyan, V.
Landoni, M.
Strader, J.
Chomiuk, L.
Cheung, C.C.
Masetti, N.
Jiménez Bailón, E.
DAbrusco, R.
Paggi, A.
Milisavljevic, D.
La Franca, F.
Smith, H.A.
Tosti, G.
author2_role author
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
topic Galaxies: Active
Galaxies: Bl Lacertae Objects
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 Searching for low energy counterparts of γ-rays sources is one of the major challenges in modern γ-ray astronomy. In the third Fermi source catalog about 30% of detected sources are unidentified/unassociated Gamma-ray Sources (UGSs). We recently started an optical spectroscopic follow up campaign to confirm the blazar-like nature of candidates counterparts of UGSs. Here we report the spectra of 61 targets collected with the Southern Astrophysical Research Telescope (SOAR) between 2014 and the 2017. Our sample includes 33 potential counterparts of UGSs, selected on the basis of WISE colors, and 27 blazar candidates of uncertain type associated with gamma-ray sources of the last release of the Fermi catalog. We confirm the BZB nature of 20 sources lying within the positional uncertainty region of the UGSs. All the observed BCUs show blazar-like spectra, classified as 2 BZQs and 25 BZBs, for which we obtained 6 redshift estimates. Within the BCUs observations we report the redshift estimate for the BZB associated with, 3FGL J1106.4-3643 that is the second most distant BL Lac known to date, at z≥ 1.084.
Fil: Peña-Herazo, H.A.. Università degli Studi di Torino; Italia. Sezione di Torino; Italia. Instituto Nacional de Astrofísica, Óptica y Electrónica; México
Fil: Marchesini, Ezequiel Joaquín. Università degli Studi di Torino; Italia. Sezione 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. Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna; Italia
Fil: Álvarez Crespo, N.. Università degli Studi di Torino; Italia. Sezione di Torino; Italia
Fil: Ricci, F.. Università Roma Tre; Italia
Fil: Massaro, F.. Università degli Studi di Torino; Italia. Sezione di Torino; Italia
Fil: Chavushyan, V.. Instituto Nacional de Astrofísica, Óptica y Electrónica; México
Fil: Landoni, M.. Osservatorio Astronomico di Brera; Italia
Fil: Strader, J.. Michigan State University; Estados Unidos
Fil: Chomiuk, L.. Michigan State University; Estados Unidos
Fil: Cheung, C.C.. Spece Sciences División. Naval Research Laboratory; Estados Unidos
Fil: Masetti, N.. Universidad Andrés Bello; Chile. Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna; Italia
Fil: Jiménez Bailón, E.. Universidad Nacional Autónoma de México; México
Fil: DAbrusco, R.. Università degli Studi di Napoli Federico II; Italia
Fil: Paggi, A.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Milisavljevic, D.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: La Franca, F.. Università Roma Tre; Italia
Fil: Smith, H.A.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Tosti, G.. Università degli Studi di Perugia; Italia
description Searching for low energy counterparts of γ-rays sources is one of the major challenges in modern γ-ray astronomy. In the third Fermi source catalog about 30% of detected sources are unidentified/unassociated Gamma-ray Sources (UGSs). We recently started an optical spectroscopic follow up campaign to confirm the blazar-like nature of candidates counterparts of UGSs. Here we report the spectra of 61 targets collected with the Southern Astrophysical Research Telescope (SOAR) between 2014 and the 2017. Our sample includes 33 potential counterparts of UGSs, selected on the basis of WISE colors, and 27 blazar candidates of uncertain type associated with gamma-ray sources of the last release of the Fermi catalog. We confirm the BZB nature of 20 sources lying within the positional uncertainty region of the UGSs. All the observed BCUs show blazar-like spectra, classified as 2 BZQs and 25 BZBs, for which we obtained 6 redshift estimates. Within the BCUs observations we report the redshift estimate for the BZB associated with, 3FGL J1106.4-3643 that is the second most distant BL Lac known to date, at z≥ 1.084.
publishDate 2017
dc.date.none.fl_str_mv 2017-12
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/11336/49985
Peña-Herazo, H.A.; Marchesini, Ezequiel Joaquín; Álvarez Crespo, N.; Ricci, F.; Massaro, F.; et al.; Optical spectroscopic observations of gamma-ray blazar candidates. VII. Follow-up campaign in the southern hemisphere; Springer; Astrophysics And Space Science; 362; 12; 12-2017
0004-640X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/49985
identifier_str_mv Peña-Herazo, H.A.; Marchesini, Ezequiel Joaquín; Álvarez Crespo, N.; Ricci, F.; Massaro, F.; et al.; Optical spectroscopic observations of gamma-ray blazar candidates. VII. Follow-up campaign in the southern hemisphere; Springer; Astrophysics And Space Science; 362; 12; 12-2017
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/s10509-017-3208-7
info:eu-repo/semantics/altIdentifier/url/ps://link.springer.com/article/10.1007%2Fs10509-017-3208-7
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)
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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