{"paper":{"title":"The Infrared Medium-deep Survey. III. Survey of Luminous Quasars at 4.7 $\\leq$ z $\\leq$ 5.4","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Changsu Choi, Dohyeong Kim, Duho Kim, Giseon Baek, Hye-In Lee, Hyunsung David Jun, Jae-Woo Kim, Ji Hoon Kim, Jueun Hong, Marios Karouzos, Minhee Hyun, Minjin Kim, Myungshin Im, Nahyun Choi, Sanghyuk Kim, Seong-Kook Lee, Soojong Pak, Tae-Geun Ji, Won-Kee Park, Woojin Park, Yiseul Jeon, Yongjung Kim, Yongmin Yoon, Yoon Chan Taak","submitted_at":"2017-06-26T16:06:14Z","abstract_excerpt":"We present our first results of the survey for high redshift quasars at $5 \\lesssim {\\rm z} \\lesssim 5.7$. The search for quasars in this redshift range has been known to be challenging due to limitations of filter sets used in previous studies. We conducted a quasar survey for two specific redshift ranges, 4.60 $\\leq$ z $\\leq$ 5.40 and 5.50 $\\leq$ z $\\leq$ 6.05, using multi-wavelength data that include observations using custom-designed filters, $is$ and $iz$. Using these filters and a new selection technique, we were able to reduce the fraction of interlopers. Through optical spectroscopy, w"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.08454","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"}