Optical archival spectra of blazar candidates of uncertain type in the 3rd fermi large area telescope catalog

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dc.contributor.authorÁlvarez Crespo, N.
dc.contributor.authorMassaro, F.
dc.contributor.authorD’Abrusco, R.
dc.contributor.authorLandoni, M.
dc.contributor.authorMasetti, N.
dc.contributor.authorChavushyan, V.
dc.contributor.authorJiménez-Bailón, E.
dc.contributor.authorLa Franca, F.
dc.contributor.authorMilisavljevic, D.
dc.contributor.authorPaggi, A.
dc.contributor.authorPatiño-Álvarez, V.
dc.contributor.authorRicci, F.
dc.contributor.authorSmith, Howard A.
dc.date.accessioned2023-09-27T16:12:04Z
dc.date.available2023-09-27T16:12:04Z
dc.date.issued2016-09
dc.descriptionIndexación: Scopus.es
dc.description.abstractDespite the fact that blazars constitute the rarest class among active galactic nuclei (AGNs) they are the largest known population of associated γ -ray sources. Many of the γ -ray objects listed in the Fermi-Large Area Telescope Third Source catalog (3FGL) are classified as blazar candidates of uncertain type (BCUs), either because they show multifrequency behavior similar to blazars but lacking optical spectra in the literature, or because the quality of such spectra is too low to confirm their nature. Here we select, out of 585 BCUs in the 3FGL, 42 BCUs which we identify as probable blazars by their WISE infrared colors and which also have optical spectra that are available in the Sloan Digital Sky Survey (SDSS) and/or Six-Degree Field Galaxy Survey Database (6dFGS). We confirm the blazar nature of all of the sources. We furthermore conclude that 28 of them are BL Lacs, 8 are radio-loud quasars with flat radio spectrum and 6 are BL Lac whose emission is dominated by their host galaxy.es
dc.description.urihttps://link-springer-com.recursosbiblioteca.unab.cl/article/10.1007/s10509-016-2902-1#rightslink
dc.identifier.citationAstrophysics and Space Science. Open Access. Volume 361, Issue 9. 1 September 2016. Article number 316es
dc.identifier.doi10.1007/s10509-016-2902-1
dc.identifier.issn0004-640X
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/53349
dc.language.isoenes
dc.publisherSpringer Netherlandses
dc.subjectGalaxies: Activees
dc.subjectGalaxies: BL Lacertae Objectses
dc.subjectRadiation Mechanisms: Non-Thermales
dc.titleOptical archival spectra of blazar candidates of uncertain type in the 3rd fermi large area telescope cataloges
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