{"paper":{"title":"First Discoveries of z>6 Quasars with the DECam Legacy Survey and UKIRT Hemisphere Survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Adam D. Myers, Andy Lawrence, Arjun Dey, David James, David J. Schlegel, Dustin Lang, Feige Wang, Fuyan Bian, Ian D. McGreer, Jiang-Tao Li, Jiani Ding, Jinyi Yang, Joseph R. Findlay, Linhua Jiang, Nicholas P. Ross, Qian Yang, Richard Green, Simon Dye, Tom Shanks, Xiaohui Fan, Xue-Bing Wu, Zefeng Li","submitted_at":"2017-03-22T02:10:30Z","abstract_excerpt":"We present the first discoveries from a survey of $z\\gtrsim6$ quasars using imaging data from the DECam Legacy Survey (DECaLS) in the optical, the UKIRT Deep Infrared Sky Survey (UKIDSS) and a preliminary version of the UKIRT Hemisphere Survey (UHS) in the near-IR, and ALLWISE in the mid-IR. DECaLS will image 9000 deg$^2$ of sky down to $z_{\\rm AB}\\sim23.0$, and UKIDSS and UHS, which will map the northern sky at $0<DEC<+60^{\\circ}$, reaching $J_{\\rm VEGA}\\sim19.6$ (5-$\\sigma$). The combination of these datasets allows us to discover quasars at redshift $z\\gtrsim7$ and to conduct a complete cen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.07490","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}