Optical Spectroscopic Observations of Gamma-Ray Blazar Candidates. XII. Follow-up Observations from SOAR, Blanco, NTT, and OAN-SPM

Vista sencilla de ítem
dc.contributor.authorGarcía-Pérez, Abigail
dc.contributor.authorPeña-Herazo, Harold A.
dc.contributor.authorMassaro, Francesco
dc.contributor.authorChavushyan, Vahram
dc.contributor.authorD’abrusco, Raffaele
dc.contributor.authorMasetti, Nicola
dc.contributor.authorLandoni, Marco
dc.contributor.authorFranca, Fabio La
dc.contributor.authorPatiño-Álvarez, Víctor M.
dc.contributor.authorAmaya-Almazán, Raúl A.
dc.contributor.authorMilisavljevic, Dan
dc.contributor.authorPaggi, Alessandro
dc.contributor.authorRicci, Federica
dc.contributor.authorJiménez-Bailón, Elena
dc.contributor.authorSmith, Howard A.
dc.date.accessioned2024-09-17T17:04:09Z
dc.date.available2024-09-17T17:04:09Z
dc.date.issued2023-03
dc.descriptionIndexación: Scopus
dc.description.abstractRoughly one third of the sources in the Fermi-LAT catalogs are listed as unidentified/unassociated γ-ray sources (UGS), i.e., they lack a low-energy counterpart. In addition, there is a growing population of blazars of uncertain type (BCUs). Spectroscopic observations are crucial to confirm the blazar nature of the UGSs candidate counterparts and BCUs. Hence, in 2013 we started an optical spectroscopic campaign to carry out the identifications and classifications. In this paper, as a continuation of the campaign we report the spectra of 39 sources: the sample comprises 37 sources classified as BCUs, one source classified as a BL Lac in the Fourth Source Catalog of the Fermi-LAT (4FGL), and one source classified as UGS. We classify 19 of the sources in the sample as BL Lacs, 13 as blazars with nonnegligible host-galaxy emission, six as Flat Spectrum Radio Quasars, and one as a normal elliptical galaxy. The source listed as BL Lac in the 4FGL seems to be a blazar with nonnegligible host-galaxy emission in our observations, most likely due to an ongoing quiescent state. We classified the UGS source as a BL Lac. Six out of the 39 sources were previously reported in the campaign; in general, both the classifications and redshifts are in agreement, except for one of them with no redshift reported before. Altogether, we provided reliable redshift estimates to 21 out of the 39 sources. Finally, we describe the statistics of the data collected in our campaign so far. © 2023. The Author(s). Published by the American Astronomical Society.
dc.description.urihttps://iopscience-iop-org.recursosbiblioteca.unab.cl/article/10.3847/1538-3881/acabc0
dc.identifier.citationAstronomical Journal. Volume 165, Issue 3. 1 March 2023. Article number 127
dc.identifier.doi10.3847/1538-3881/acabc0
dc.identifier.issn0004-6256
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/60269
dc.language.isoen
dc.publisherAmerican Astronomical Society
dc.rights.licenseCC BY 4.0 Attribution 4.0 International Deed
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectOptical identification (1167)
dc.subjectBlazars (164)
dc.subjectBL Lacertae objects (158)
dc.subjectFlat-spectrum radio quasars (2163)
dc.titleOptical Spectroscopic Observations of Gamma-Ray Blazar Candidates. XII. Follow-up Observations from SOAR, Blanco, NTT, and OAN-SPM
dc.typeArtículo
Archivos
Bloque original
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
Garcia-Perez_Optical_Spectroscopic_Observations_of_Gamma-Ray_Blazar_2023.pdf
Tamaño:
1.56 MB
Formato:
Adobe Portable Document Format
Descripción:
TEXTO COMPLETO EN INGLES
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar
Colecciones
FCE - Artículos de Revista