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dc.contributor.authorMortlock, D.J.
dc.contributor.authorPatel, M.
dc.contributor.authorWarren, S.J.
dc.contributor.authorVenemans, B.P.
dc.contributor.authorMcMahon, R.G.
dc.contributor.authorHewett, P.C.
dc.contributor.authorSimpson, C.
dc.contributor.authorSharp, R.G.
dc.contributor.authorBurningham, B.
dc.contributor.authorDye, S.
dc.contributor.authorEllis, S.
dc.contributor.authorGonzales-Solares, E.
dc.contributor.authorHuelamo, N.
dc.date.accessioned2009-11-02T12:31:01Z
dc.date.available2009-11-02T12:31:01Z
dc.date.issued2009
dc.identifier.citationMortlock , D J , Patel , M , Warren , S J , Venemans , B P , McMahon , R G , Hewett , P C , Simpson , C , Sharp , R G , Burningham , B , Dye , S , Ellis , S , Gonzales-Solares , E & Huelamo , N 2009 , ' Discovery of a redshift 6.13 quasar in the UKIRT infrared deep sky survey ' , Astronomy and Astrophysics , vol. 505 , no. 1 , pp. 97-104 . https://doi.org/10.1051/0004-6361/200811161
dc.identifier.issn0004-6361
dc.identifier.otherPURE: 150430
dc.identifier.otherPURE UUID: 57d76b20-5296-47ff-991c-af7efbae15a9
dc.identifier.otherdspace: 2299/3996
dc.identifier.otherScopus: 70349682771
dc.identifier.urihttp://hdl.handle.net/2299/3996
dc.descriptionOriginal article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory (ESO) DOI: 10.1051/0004-6361/200811161
dc.description.abstractOptical and near-infrared (NIR) spectra are presented for ULAS J131911.29+095051.4 (hereafter ULAS J1319+0950), a new redshift z = 6.127 0.004 quasar discovered in the Third Data Release (DR3) of the UKIRT Infrared Deep Sky Survey (UKIDSS). The source has = 19.10 0.03, corresponding to = -27.12, which is comparable to the absolute magnitudes of the z 6 quasars discovered in the Sloan Digital Sky Survey (SDSS). ULAS J1319+0950 was, in fact, registered by SDSS as a faint source with = 20.13 0.12, just below the signal-to-noise ratio limit of the SDSS high-redshift quasar survey. The faint z-band magnitude is a consequence of the weak Ly /N V emission line, which has a rest-frame equivalent width of ~20Å and provides only a small boost to the z-band flux. Nevertheless, there is no evidence of a significant new population of high-redshift quasars with weak emission lines from this UKIDSS-based search. The Ly  optical depth to ULAS J1319+0950 is consistent with that measured towards similarly distant SDSS quasars, implying that results from optical- and NIR-selected quasars may be combined in studies of cosmological reionization. Also presented is a new NIR-spectrum of the previously discovered UKIDSS quasar ULAS J020332.38+001229.2, which reveals the object to be a broad absorption line quasar. The new spectrum shows that the emission line initially identified as Ly  is actually N V, leading to a revised redshift of z = 5.72, rather than z = 5.86 as previously estimateden
dc.language.isoeng
dc.relation.ispartofAstronomy and Astrophysics
dc.rightsOpen
dc.titleDiscovery of a redshift 6.13 quasar in the UKIRT infrared deep sky surveyen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dcterms.dateAccepted2009
rioxxterms.versionofrecordhttps://doi.org/10.1051/0004-6361/200811161
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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