Probing Early Supermassive Black Hole Growth and Quasar Evolution with Near-infrared Spectroscopy of 37 Reionization-era Quasars at 6.3 < z ≤ 7.64

  title={Probing Early Supermassive Black Hole Growth and Quasar Evolution with Near-infrared Spectroscopy of 37 Reionization-era Quasars at 6.3 < z ≤ 7.64},
  author={Jinyi Yang and Feige Wang and Xiaohui Fan and Aaron J. Barth and Joseph F. Hennawi and Riccardo Nanni and Fuyan Bian and Frederick B. Davies and Emanuele Paolo Farina and Jan-Torge Schindler and Eduardo Ba{\~n}ados and Roberto Decarli and Anna-Christina Eilers and Richard Green and Hengxiao Guo and Linhua Jiang and Jiangtao Li and Bram P. Venemans and Fabian Walter and Xue-bing Wu and Minghao Yue},
  journal={The Astrophysical Journal},
We report the results of near-infrared spectroscopic observations of 37 quasars in the redshift range 6.3 < z ≤ 7.64, including 32 quasars at z > 6.5, forming the largest quasar near-infrared spectral sample at this redshift. The spectra, taken with Keck, Gemini, VLT, and Magellan, allow investigations of central black hole mass and quasar rest-frame ultraviolet spectral properties. The black hole masses derived from the Mg ii emission lines are in the range (0.3–3.6) × 109 M ⊙, which requires… 

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