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Exploring Reionization-era Quasars. III. Discovery of 16 Quasars at 6.4 ≲ z ≲ 6.9 with DESI Legacy Imaging Surveys and the UKIRT Hemisphere Survey and Quasar Luminosity Function at z ∼ 6.7

  • Authors: Feige Wang, Jinyi Yang, Xiaohui Fan, Xue-Bing Wu, Minghao Yue, Jiang-Tao Li, Fuyan Bian, Linhua Jiang, Eduardo Bañados, Jan-Torge Schindler, Joseph R. Findlay, Frederick B. Davies, Roberto Decarli, Emanuele P. Farina, Richard Green, Joseph F. Hennawi, Yun-Hsin Huang, Chiara Mazzuccheli, Ian D. McGreer, Bram Venemans, Fabian Walter, Simon Dye, Brad W. Lyke, Adam D. Myers, and Evan Haze Nunez

2019 The Astrophysical Journal 884 30.

  • Provider: AAS Journals

Caption: Figure 9.

Binned quasar luminosity function. The orange filled circles represent our newly measured binned QLF at z ∼ 6.7. The blue dashed line is our best fit with β = −2.35 ± 0.22. The magenta solid line denotes a double power-law fit. The black dotted and dashed–dotted lines represent z ∼ 6 QLF measured by Jiang et al. (2016) and Willott et al. (2010), respectively. Clearly, the quasar number density at z ∼ 6.7 is much lower than that at z ∼ 6.

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