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

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dc.contributor.authorPeña-Herazo, H.A.
dc.contributor.authorMarchesini, E.J.
dc.contributor.authorÁlvarez Crespo, N.
dc.contributor.authorRicci, F.
dc.contributor.authorMassaro, F.
dc.contributor.authorChavushyan, V.
dc.contributor.authorLandoni, M.
dc.contributor.authorStrader, J.
dc.contributor.authorChomiuk, L.
dc.contributor.authorCheung, C.C.
dc.contributor.authorMasetti, N.
dc.contributor.authorJiménez-Bailón, E.
dc.contributor.authorD’Abrusco, R.
dc.contributor.authorPaggi, A.
dc.contributor.authorMilisavljevic, D.
dc.contributor.authorLa Franca, F.
dc.contributor.authorSmith, H.A.
dc.contributor.authorTosti, G.
dc.date.accessioned2023-10-23T15:17:32Z
dc.date.available2023-10-23T15:17:32Z
dc.date.issued2017-12
dc.descriptionIndexación: Scopuses
dc.description.abstractSearching 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. © 2017, Springer Science+Business Media B.V., part of Springer Nature.es
dc.description.urihttps://link-springer-com.recursosbiblioteca.unab.cl/article/10.1007/s10509-017-3208-7
dc.identifier.citationAstrophysics and Space Science Volume 362, Issue 121 December 2017 Article number 228es
dc.identifier.doi10.1007/s10509-017-3208-7
dc.identifier.issn0004-640X
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/53552
dc.language.isoenes
dc.publisherSpringer Netherlandses
dc.rights.licenseCC BY 4.0 DEED
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subjectGalaxies: activees
dc.subjectGalaxies: BL Lacertae objectses
dc.subjectQuasars: generales
dc.titleOptical spectroscopic observations of gamma-ray blazar candidates. VII. Follow-up campaign in the southern hemispherees
dc.typeArtículoes
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