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dc.contributor.author
Peña-Herazo, H.A.
dc.contributor.author
Marchesini, Ezequiel Joaquín
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Álvarez Crespo, N.
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Ricci, F.
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Massaro, F.
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Chavushyan, V.
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Landoni, M.
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Strader, J.
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Chomiuk, L.
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Cheung, C.C.
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Masetti, N.
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Jiménez Bailón, E.
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DAbrusco, R.
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Paggi, A.
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Milisavljevic, D.
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La Franca, F.
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Smith, H.A.
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Tosti, G.
dc.date.available
2018-06-25T19:46:26Z
dc.date.issued
2017-12
dc.identifier.citation
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
dc.identifier.issn
0004-640X
dc.identifier.uri
http://hdl.handle.net/11336/49985
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Galaxies: Active
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Galaxies: Bl Lacertae Objects
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Quasars: General
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Optical spectroscopic observations of gamma-ray blazar candidates. VII. Follow-up campaign in the southern hemisphere
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-06-25T16:16:02Z
dc.journal.volume
362
dc.journal.number
12
dc.journal.pais
Alemania
dc.journal.ciudad
Berlin
dc.description.fil
Fil: Peña-Herazo, H.A.. Università degli Studi di Torino; Italia. Sezione di Torino; Italia. Instituto Nacional de Astrofísica, Óptica y Electrónica; México
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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
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Fil: Álvarez Crespo, N.. Università degli Studi di Torino; Italia. Sezione di Torino; Italia
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Fil: Ricci, F.. Università Roma Tre; Italia
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Fil: Massaro, F.. Università degli Studi di Torino; Italia. Sezione di Torino; Italia
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Fil: Chavushyan, V.. Instituto Nacional de Astrofísica, Óptica y Electrónica; México
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Fil: Landoni, M.. Osservatorio Astronomico di Brera; Italia
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Fil: Strader, J.. Michigan State University; Estados Unidos
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Fil: Chomiuk, L.. Michigan State University; Estados Unidos
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Fil: Cheung, C.C.. Spece Sciences División. Naval Research Laboratory; Estados Unidos
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Fil: Masetti, N.. Universidad Andrés Bello; Chile. Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna; Italia
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Fil: Jiménez Bailón, E.. Universidad Nacional Autónoma de México; México
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Fil: DAbrusco, R.. Università degli Studi di Napoli Federico II; Italia
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Fil: Paggi, A.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
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Fil: Milisavljevic, D.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
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Fil: La Franca, F.. Università Roma Tre; Italia
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Fil: Smith, H.A.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
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Fil: Tosti, G.. Università degli Studi di Perugia; Italia
dc.journal.title
Astrophysics And Space Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1007/s10509-017-3208-7
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info:eu-repo/semantics/altIdentifier/url/ps://link.springer.com/article/10.1007%2Fs10509-017-3208-7
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