Galactic-scale absorption outflow in the low-luminosity quasar IRAS F04250-5718: Hubble Space Telescope/Cosmic Origins Spectrograph observations

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dc.contributorVirginia Techen
dc.contributor.authorEdmonds, Douglasen
dc.contributor.authorBorguet, Benoiten
dc.contributor.authorArav, Nahumen
dc.contributor.authorDunn, Jay P.en
dc.contributor.authorPenton, S.en
dc.contributor.authorKriss, G. A.en
dc.contributor.authorKorista, K. T.en
dc.contributor.authorCostantini, E.en
dc.contributor.authorSteenbrugge, K. C.en
dc.contributor.authorGonzalez-Serrano, J. I.en
dc.contributor.authorAoki, K.en
dc.contributor.authorBautista, M. A.en
dc.contributor.authorBehar, E.en
dc.contributor.authorBenn, C.en
dc.contributor.authorCrenshaw, D. M.en
dc.contributor.authorEverett, J.en
dc.contributor.authorGabel, J.en
dc.contributor.authorKaastra, J.en
dc.contributor.authorMoe, M.en
dc.contributor.authorScott, J.en
dc.contributor.departmentPhysicsen
dc.date.accessed2014-02-05en
dc.date.accessioned2014-02-25T13:57:04Zen
dc.date.available2014-02-25T13:57:04Zen
dc.date.issued2011-09en
dc.description.abstractWe present absorption line analysis of the outflow in the quasar IRAS F04250-5718. Far-ultraviolet data from the Cosmic Origins Spectrograph on board the Hubble Space Telescope reveal intrinsic narrow absorption lines from high ionization ions (e. g., C IV, N V, and O VI) as well as low ionization ions (e. g., C II and Si III). We identify three kinematic components with central velocities ranging from similar to-50 to similar to-230 km s(-1). Velocity-dependent, non-black saturation is evident from the line profiles of the high ionization ions. From the non-detection of absorption from a metastable level of C II, we are able to determine that the electron number density in the main component of the outflow is less than or similar to 30 cm(-3). Photoionization analysis yields an ionization parameter log U-H similar to -1.6 +/- 0.2, which accounts for changes in the metallicity of the outflow and the shape of the incident spectrum. We also consider solutions with two ionization parameters. If the ionization structure of the outflow is due to photoionization by the active galactic nucleus, we determine that the distance to this component from the central source is greater than or similar to 3 kpc. Due to the large distance determined for the main kinematic component, we discuss the possibility that this outflow is part of a galactic wind.en
dc.description.sponsorshipNASA GO 11686, GO 12022en
dc.description.sponsorshipNSF AST 0837880en
dc.description.sponsorshipSpanish Ministerio de Ciencia e Innovacion AYA2008-06311-C02-02en
dc.identifier.citationDoug Edmonds et al. 2011. "Galactic-scale absorption outflow in the low-luminosity quasar IRAS F04250-5718: Hubble Space Telescope/Cosmic Origins Spectrograph observations," ApJ 739 7 doi:10.1088/0004-637X/739/1/7en
dc.identifier.doihttps://doi.org/10.1088/0004-637x/739/1/7en
dc.identifier.issn0004-637Xen
dc.identifier.urihttp://hdl.handle.net/10919/25545en
dc.identifier.urlhttp://iopscience.iop.org/0004-637X/739/1/7/pdf/0004-637X_739_1_7.pdfen
dc.language.isoen_USen
dc.publisherIOP Publishing Ltd.en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectgalaxies: seyferten
dc.subjectquasars: absorption linesen
dc.subjectquasars: individual (irasen
dc.subjectf04250-5718)en
dc.subjectultraviolet-spectroscopic-exploreren
dc.subjectkeck hires observationsen
dc.subjectonen
dc.subjectstarburst galaxiesen
dc.subjectx-ray-propertiesen
dc.subjectintrinsic absorptionen
dc.subjectphysicalen
dc.subjectconditionsen
dc.subjectactive galaxiesen
dc.subjectseyfert-galaxyen
dc.subject1h 0419-577en
dc.subjectchemicalen
dc.subjectabundancesen
dc.titleGalactic-scale absorption outflow in the low-luminosity quasar IRAS F04250-5718: Hubble Space Telescope/Cosmic Origins Spectrograph observationsen
dc.title.serialAstrophysical Journalen
dc.typeArticle - Refereeden

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