dc.contributor.author | Kriss, Gerard A. | |
dc.contributor.author | Lee, Julia C. | |
dc.contributor.author | Danehkar, Ashkbiz | |
dc.contributor.author | Nowak, Michael A. | |
dc.contributor.author | Fang, Taotao | |
dc.contributor.author | Hardcastle, Martin J. | |
dc.contributor.author | Neilsen, Joseph | |
dc.contributor.author | Young, Andrew | |
dc.date.accessioned | 2018-06-06T17:09:15Z | |
dc.date.available | 2018-06-06T17:09:15Z | |
dc.date.issued | 2018-02-02 | |
dc.identifier.citation | Kriss , 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.issn | 0004-637X | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/1712.08850v1 | |
dc.identifier.uri | http://hdl.handle.net/2299/20148 | |
dc.description | This 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.abstract | We 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.format.extent | 668569 | |
dc.language.iso | eng | |
dc.relation.ispartof | The Astrophysical Journal | |
dc.subject | galaxies: active | |
dc.subject | galaxies: individual (PG 1211+143) | |
dc.subject | galaxies: nuclei | |
dc.subject | galaxies: Seyfert | |
dc.subject | Astronomy and Astrophysics | |
dc.subject | Space and Planetary Science | |
dc.title | Discovery of an Ultraviolet Counterpart to an Ultra-Fast X-ray Outflow in the Quasar PG1211+143 | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Centre for Astrophysics Research (CAR) | |
dc.description.status | Peer reviewed | |
dc.identifier.url | http://www.scopus.com/inward/record.url?scp=85041834686&partnerID=8YFLogxK | |
rioxxterms.versionofrecord | 10.3847/1538-4357/aaa42b | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |