학술논문
Exploring Reionization-Era Quasars III: Discovery of 16 Quasars at $6.4\lesssim z \lesssim 6.9$ with DESI Legacy Imaging Surveys and UKIRT Hemisphere Survey and Quasar Luminosity Function at $z\sim6.7$
Document Type
Working Paper
Author
Wang, Feige; Yang, Jinyi; Fan, Xiaohui; Wu, Xue-Bing; Yue, Minghao; Li, Jiang-Tao; Bian, Fuyan; Jiang, Linhua; Bañados, Eduardo; Schindler, Jan-Torge; Findlay, Joseph R.; Davies, Frederick B.; Decarli, Roberto; Farina, Emanuele P.; Green, Richard; Hennawi, Joseph F.; Huang, Yun-Hsin; Mazzuccheli, Chiara; McGreer, Ian D.; Venemans, Bram; Walter, Fabian; Dye, Simon; Lyke, Brad W.; Myers, Adam D.; Nunez, Evan Haze
Source
Subject
Language
Abstract
This is the third paper in a series aims at finding reionzation-era quasars with the combination of DESI Legacy imaging Surveys (DELS) and near-infrared imaging surveys, such as the UKIRT Hemisphere Survey (UHS), as well as the Wide-field Infrared Survey Explore ($WISE$) mid-infrared survey. In this paper, we describe the updated quasar candidate selection procedure, report the discovery of 16 quasars at $6.4\lesssim z \lesssim6.9$ from area of $\sim$13,020 deg$^2$, and present the quasar luminosity function (QLF) at $z\sim6.7$. The measured QLF follows $\Phi(L_{1450})\propto L_{1450}^{-2.35}$ in the magnitude range $27.6