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.
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.accessioned2024-05-24T16:04:27Z
dc.date.available2024-05-24T16:04:27Z
dc.date.issued2017-07
dc.descriptionIndexación: Scopus
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. © ESO, 2017.
dc.description.urihttps://www.aanda.org/articles/aa/full_html/2017/06/aa29463-16/aa29463-16.html
dc.identifier.citationAstronomy and Astrophysics Volume 6021 June 2017 Article number A124
dc.identifier.doi10.1051/0004-6361/201629463
dc.identifier.issn0004-6361
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/57037
dc.language.isoen
dc.publisherEDP Sciences
dc.rights.licenseCC BY 4.0 DEED Atribución 4.0 Internacional
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subjectGalaxies: Seyfert
dc.subjectNovae, cataclysmic variables
dc.subjectQuasars: emission lines
dc.subjectTechniques: spectroscopic
dc.subjectX-rays: binaries
dc.titleThe nature of 50 Palermo Swift -BAT hard X-ray objects through optical spectroscopy
dc.typeArtículo
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