dc.contributor.author | Mortlock, D.J. | |
dc.contributor.author | Patel, M. | |
dc.contributor.author | Warren, S.J. | |
dc.contributor.author | Venemans, B.P. | |
dc.contributor.author | McMahon, R.G. | |
dc.contributor.author | Hewett, P.C. | |
dc.contributor.author | Simpson, C. | |
dc.contributor.author | Sharp, R.G. | |
dc.contributor.author | Burningham, B. | |
dc.contributor.author | Dye, S. | |
dc.contributor.author | Ellis, S. | |
dc.contributor.author | Gonzales-Solares, E. | |
dc.contributor.author | Huelamo, N. | |
dc.date.accessioned | 2009-11-02T12:31:01Z | |
dc.date.available | 2009-11-02T12:31:01Z | |
dc.date.issued | 2009 | |
dc.identifier.citation | Mortlock , 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.issn | 0004-6361 | |
dc.identifier.other | dspace: 2299/3996 | |
dc.identifier.other | ORCID: /0000-0003-4600-5627/work/64327343 | |
dc.identifier.uri | http://hdl.handle.net/2299/3996 | |
dc.description | Original article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory (ESO) DOI: 10.1051/0004-6361/200811161 | |
dc.description.abstract | Optical 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 estimated | en |
dc.format.extent | 335103 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astronomy and Astrophysics | |
dc.title | Discovery of a redshift 6.13 quasar in the UKIRT infrared deep sky survey | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | School of Physics, Engineering & Computer Science | |
dc.contributor.institution | Department of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Centre for Astrophysics Research (CAR) | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.1051/0004-6361/200811161 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |