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dc.contributor.authorKriss, Gerard A.
dc.contributor.authorLee, Julia C.
dc.contributor.authorDanehkar, Ashkbiz
dc.contributor.authorNowak, Michael A.
dc.contributor.authorFang, Taotao
dc.contributor.authorHardcastle, Martin J.
dc.contributor.authorNeilsen, Joseph
dc.contributor.authorYoung, Andrew
dc.date.accessioned2018-06-06T17:09:15Z
dc.date.available2018-06-06T17:09:15Z
dc.date.issued2018-02-02
dc.identifier.citationKriss , G A , Lee , J C , Danehkar , A , Nowak , M A , Fang , T , Hardcastle , M J , Neilsen , J & Young , A 2018 , ' Discovery of an Ultraviolet Counterpart to an Ultra-Fast X-ray Outflow in the Quasar PG1211+143 ' , The Astrophysical Journal , vol. 853 , no. 2 , 166 . https://doi.org/10.3847/1538-4357/aaa42b
dc.identifier.issn0004-637X
dc.identifier.otherPURE: 13484355
dc.identifier.otherPURE UUID: 99aa13ba-990d-4051-80c6-6742ebe63fe8
dc.identifier.otherArXiv: http://arxiv.org/abs/1712.08850v1
dc.identifier.otherScopus: 85041834686
dc.identifier.urihttp://hdl.handle.net/2299/20148
dc.descriptionThis is an author-created, un-copyedited version of an article published in The Astrophysical Journal. The Version of Record is available online at https://doi.org/10.3847/1538-4357/aaa42b
dc.description.abstractWe observed the quasar PG 1211+143 using the Cosmic Origins Spectrograph on the Hubble Space Telescope in 2015 April as part of a joint campaign with the Chandra X-ray Observatory and the Jansky Very Large Array. Our ultraviolet spectra cover the wavelength range 912-2100 Å. We find a broad absorption feature () at an observed wavelength of 1240 Å. Interpreting this as H i Lyα, in the rest frame of PG 1211+143 (z = 0.0809), this corresponds to an outflow velocity of -16,980 (outflow redshift ), matching the moderate ionization X-ray absorption system detected in our Chandra observation and reported previously by Pounds et al. With a minimum H i column density of , and no absorption in other UV resonance lines, this Lyα absorber is consistent with arising in the same ultrafast outflow as the X-ray absorbing gas. The Lyα feature is weak or absent in archival ultraviolet spectra of PG 1211+143, strongly suggesting that this absorption is transient, and intrinsic to PG 1211+143. Such a simultaneous detection in two independent wavebands for the first time gives strong confirmation of the reality of an ultrafast outflow in an active galactic nucleus.en
dc.language.isoeng
dc.relation.ispartofThe Astrophysical Journal
dc.subjectgalaxies: active
dc.subjectgalaxies: individual (PG 1211+143)
dc.subjectgalaxies: nuclei
dc.subjectgalaxies: Seyfert
dc.subjectAstronomy and Astrophysics
dc.subjectSpace and Planetary Science
dc.titleDiscovery of an Ultraviolet Counterpart to an Ultra-Fast X-ray Outflow in the Quasar PG1211+143en
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85041834686&partnerID=8YFLogxK
dc.relation.school
dcterms.dateAccepted2018-02-02
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.3847/1538-4357/aaa42b
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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