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dc.contributor.authorScott, Jennifer E.
dc.contributor.authorKriss, Gerard A.
dc.contributor.authorLee, Julia C.
dc.contributor.authorQuijano, Jessica Kim
dc.contributor.authorBrotherton, Michael
dc.contributor.authorCanizares, Claude R.
dc.contributor.authorGreen, Richard F.
dc.contributor.authorHutchings, John
dc.contributor.authorKaiser, Mary Elizabeth
dc.contributor.authorOegerle, William
dc.contributor.authorOgle, Patrick M.
dc.contributor.authorZheng, Wei
dc.contributor.authorMarshall, Herman
dc.date.accessioned2012-07-31T16:02:47Z
dc.date.available2012-07-31T16:02:47Z
dc.date.issued2005-11
dc.date.submitted2005-02
dc.identifier.issn0004-637X
dc.identifier.issn1538-4357
dc.identifier.urihttp://hdl.handle.net/1721.1/71915
dc.description.abstractWe present simultaneous X-ray, far-ultraviolet, and near-ultraviolet spectra of the Seyfert 1 galaxy NGC 7469 obtained with the Chandra X-Ray Observatory, the Far Ultraviolet Spectroscopic Explorer, and the Space Telescope Imaging Spectrograph on the Hubble Space Telescope. Previous nonsimultaneous observations of this galaxy found two distinct UV absorption components, at -560 and -1900 km s[superscript -1], with the former as the likely counterpart of the X-ray absorber. We confirm these two absorption components in our new UV observations, in which we detect prominent O VI, Lyα, N V, and C IV absorption. In our Chandra spectrum we detect O VIII emission, but no significant O VIII or O VII absorption. We also detect a prominent Fe Kα emission line in the Chandra spectrum, as well as absorption due to hydrogen-like and helium-like neon, magnesium, and silicon at velocities consistent with the -560 km s[superscript -1] UV absorber. The FUSE and STIS data reveal that the H I and C IV column densities in this UV- and X-ray-absorbing component have increased over time, as the UV continuum flux decreased. We use measured H I, N V, C IV, and O VI column densities to model the photoionization state of both absorbers self-consistently. We confirm the general physical picture of the outflow in which the low-velocity component is a highly ionized, high-density absorber with a total column density of 1020 cm[superscript -2], located near the broad emission-line region, although due to measurable columns of N V and C IV, we assign it a somewhat smaller ionization parameter than found previously, U ~ 1. The high-velocity UV component is of lower density, log N = 18.6, and likely resides farther from the central engine, as we find its ionization parameter to be U = 0.08.en_US
dc.description.sponsorshipChandra X-ray Observatory (U.S.) Fellowship Grant (PF2–30023)en_US
dc.description.sponsorshipUnited States. National Aeronautics and Space Administration. (Smithsonian Astrophysical Observatory) (Contract Number NAS8–39073)en_US
dc.language.isoen_US
dc.publisherIOP Publishingen_US
dc.relation.isversionofhttp://dx.doi.org/10.1086/496911en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourcearVixen_US
dc.titleIntrinsic Absorption in the Spectrum of NGC 7469: Simultaneous Chandra, FUSE, and STIS Observationsen_US
dc.typeArticleen_US
dc.identifier.citationScott, Jennifer E. et al. “Intrinsic Absorption in the Spectrum of NGC 7469: Simultaneous Chandra,FUSE, and STIS Observations.” The Astrophysical Journal 634.1 (2005): 193–209.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.departmentMIT Kavli Institute for Astrophysics and Space Research
dc.contributor.approverCanizares, Claude R.
dc.contributor.mitauthorCanizares, Claude R.
dc.contributor.mitauthorMarshall, Herman Lee
dc.relation.journalAstrophysical Journalen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsScott, Jennifer E.; Kriss, Gerard A.; Lee, Julia C.; Quijano, Jessica Kim; Brotherton, Michael; Canizares, Claude R.; Green, Richard F.; Hutchings, John; Kaiser, Mary Elizabeth; Marshall, Herman; Oegerle, William; Ogle, Patrick; Zheng, Weien
dc.identifier.orcidhttps://orcid.org/0000-0002-5769-8441
mit.licensePUBLISHER_POLICYen_US
mit.metadata.statusComplete


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