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dc.contributor.authorMathur, Smita
dc.contributor.authorWilkes, Belinda Jane
dc.contributor.authorElvis, Martin S.
dc.contributor.authorFiore, Fabrizio
dc.date.accessioned2017-02-14T17:45:14Z
dc.date.issued1994
dc.identifier.citationMathur, Smita, Belinda Wilkes, Martin Elvis, and Fabrizio Fiore. 1994. “The X-Ray and Ultraviolet Absorbing Outflow in 3C 351.” The Astrophysical Journal 434 (October): 493. doi:10.1086/174750.en_US
dc.identifier.issn0004-637Xen_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:30248668
dc.description.abstract3C 351 (z = 0.371), and X-ray-'quiet' quasar, is one of the few quasars showing signs of a 'warm absorber' in its X-ray spectrum; i.e., partially ionized absorbing material in the line of sight whose opacity depends on its ionization structure. The main feature in the X-ray spectrum is a K-edge due to O VII or O VIII. 3C 351 also shows unusually strong, blueshifted, associated, absorption lines in the ultraviolet (Bahcall et al. 1993) including O VI (lambda lambda 1031, 1037). This high ionization state strongly suggests an identification with the X-ray absorber and a site within the active nucleus. In this paper we demonstrate that the X-ray and UV absorption is due to the same material. This is the first confirmed UV/X-ray absorber. Physical conditions of the absorber are determined through the combination of constraints derived from both the X-ray and UV analysis. This highly ionized, outflowing, low-density, high-column density absorber situated outside the broad emission line region (BELR) is a previously unknown component of nuclear material. We rule out the identification of the absorber with a BELR cloud as the physical conditions in the two regions are inconsistent with one another. The effect of the X-ray quietness and IR upturn in the 3C 351 continuum on the BELR is also investigated. The strengths of the high-ionization lines of C IV lambda-1549 and O VI lambda-1034 with respect to Lyman-alpha are systematically lower (up to a factor of 10) in the material ionized by the 3C 351 continuum as compared to those produced by the 'standard' quasar continuum, the strongest effect being on the strength of O VI lambda-1034. We find that for a 3C 351-like continuum, C III) lambda-1909 ceases to be a density indicator.en_US
dc.description.sponsorshipAstronomyen_US
dc.language.isoen_USen_US
dc.publisherIOP Publishingen_US
dc.relation.isversionofdoi:10.1086/174750en_US
dc.relation.hasversionhttp://adsabs.harvard.edu/abs/1994ApJ...434..493Men_US
dash.licenseLAA
dc.subjectAbsorption Spectraen_US
dc.subjectActive Galactic Nucleien_US
dc.subjectInterstellar Matteren_US
dc.subjectOxygenen_US
dc.subjectQuasarsen_US
dc.subjectUltraviolet Astronomyen_US
dc.subjectUltraviolet Spectraen_US
dc.subjectX Ray Astronomyen_US
dc.subjectX Ray Spectraen_US
dc.subjectAstronomical Modelsen_US
dc.subjectCarbonen_US
dc.subjectHubble Space Telescopeen_US
dc.subjectIonizationen_US
dc.subjectIueen_US
dc.subjectLyman Alpha Radiationen_US
dc.subjectRosat Missionen_US
dc.titleThe X-ray and ultraviolet absorbing outflow in 3C 351en_US
dc.typeJournal Articleen_US
dc.description.versionVersion of Recorden_US
dc.relation.journalThe Astrophysical Journalen_US
dash.depositing.authorWilkes, Belinda Jane
dc.date.available2017-02-14T17:45:14Z
dc.identifier.doi10.1086/174750*
dash.contributor.affiliatedElvis, Martin
dash.contributor.affiliatedWilkes, Belinda


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