The nature of 50 Palermo Swift -BAT hard X-ray objects through optical spectroscopy

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dc.contributor.authorRojas, A.F.
dc.contributor.authorMasetti, N.
dc.contributor.authorMinniti, D.
dc.contributor.authorJiménez-Bailón, E.
dc.contributor.authorChavushyan, V.
dc.contributor.authorHau, G.
dc.contributor.authorMcBride, V.A.
dc.contributor.authorBassani, L.
dc.contributor.authorBazzano, A.
dc.contributor.authorBird, A.J.
dc.contributor.authorGalaz, G.l.
dc.contributor.authorGavignaud, I.
dc.contributor.authorLandi, R.
dc.contributor.authorMalizia, A.
dc.contributor.authorMorelli, L.
dc.contributor.authorPalazzi, E.
dc.contributor.authorPatiño-Álvarez, V.
dc.contributor.authorStephen, J.B.
dc.contributor.authorUbertini, P.
dc.date.accessioned2017-12-12T16:16:11Z
dc.date.available2017-12-12T16:16:11Z
dc.date.issued2017-06
dc.descriptionIndexación: Web of Science; Scopus.es_CL
dc.description.abstractWe present the nature of 50 hard X-ray emitting objects unveiled through an optical spectroscopy campaign performed at seven telescopes in the northern and southern hemispheres. These objects were detected with the Burst Alert Telescope (BAT) instrument onboard the Swift satellite and listed as of unidentified nature in the 54-month Palermo BAT catalogue. In detail, 45 sources in our sample are identified as active galactic nuclei of which, 27 are classified as type 1 (with broad and narrow emission lines) and 18 are classified as type 2 (with only narrow emission lines). Among the broad-line emission objects, one is a type 1 high-redshift quasi-stellar object, and among the narrow-line emission objects, one is a starburst galaxy, one is a X-ray bright optically normal galaxy, and one is a low ionization nuclear emission line region. We report 30 new redshift measurements, 13 confirmations and 2 more accurate redshift values. The remaining five objects are galactic sources: three are Cataclismic Variables, one is a X-ray Binary probably with a low mass secondary star, and one is an active star.es_CL
dc.description.urihttps://www.aanda.org/articles/aa/abs/2017/06/aa29463-16/aa29463-16.html
dc.identifier.citationAstronomy and Astrophysics. Volume 602, 1 June 2017, Article number A124es_CL
dc.identifier.issn0004-6361
dc.identifier.otherDOI: 10.1051/0004-6361/201629463
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/4859
dc.language.isoenes_CL
dc.publisherEDP Scienceses_CL
dc.subjectGalaxies: seyfertes_CL
dc.subjectNovae , cataclysmic variableses_CL
dc.subjectQuasars: emission lineTechniques: spectroscopices_CL
dc.subjectX-rays: Binarieses_CL
dc.titleThe nature of 50 Palermo Swift -BAT hard X-ray objects through optical spectroscopyes_CL
dc.typeArtículoes_CL
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