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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 5.

Stacked VLA FIRST image of 17 (10 from this work and 7 from the literature) z > 6.5 quasars. The white ellipse shows the beam size, and the magenta circle (radius of 5″) marks the stacked quasar position. The pixel size of the stacked image is 1.″8 pixel−1. The rms of the stacked image is ∼3.7 × 10−2 mJy beam−1, four times better than the FIRST depth. +2σ contours are shown as cyan solid lines, and −2σ contours are shown as cyan dashed lines. No signal is detected at the quasar position.

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