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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 12.

Quasar comoving emissivity at 912 Å (ϵ912) vs. redshift (z). The small blue squares are taken from the compilations of Khaire & Srianand (2015) by integrating QLFs down to 0.01 L*. The magenta open squares are our recalculations of their z > 4 points by integrating QLFs down to −18 mag and assuming a broken power-law quasar SED mentioned in the main text (i.e., same values used for the z ∼ 6.7 quasar emissivity measurement). The filled and open circles are our calculations at z ∼ 6.7 by using the single power-law QLF and double power-law QLF, respectively. Note that the open circles are shifted by 0.05 on the x-axis for clarity. The solid, dashed–dotted, and dashed lines are models from Haardt & Madau (2012), Khaire & Srianand (2015), and Madau & Haardt (2015), respectively.

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