Very few low-ionization broad absorption line (LoBAL) QSOs have been found at high redshifts, to date. One high-redshift LoBAL QSO, J0122+1216, was recently discovered by the Lijiang 2.4 m Telescope, with an initial redshift determination of 4.76. Aiming to investigate its physical properties, we carried out follow-up observations in the optical and near-IR spectroscopy. Near-IR spectra from UKIRT and P200 confirm that it is a LoBAL, with a new redshift determination of 4.82 +/- 0.01 based on the Mg II emission-line. The new Mg II redshift determination reveals strong blueshifts and asymmetry of the high-ionization emission lines. We estimate a black hole mass of similar to 2.3 x 10(9) M-circle dot and Eddington ratio of similar to 1.0 according to the empirical Mg II-based single-epoch relation and bolometric correction factor. It is possible that strong outflows are the result of an extreme quasar environment driven by the high Eddington ratio. A lower limit on the outflowing kinetic power (>0.9% L-Edd) is derived from both emission and absorption lines, indicating that these outflows play a significant role in the feedback process that regulates the growth of its black hole, as well as host galaxy evolution.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/623841 |
| Date | 03 April 2017 |
| Creators | Yi, Weimin, Green, Richard, Bai, Jin-Ming, Wang, Tinggui, Grier, Catherine J., Trump, Jonathan R., Brandt, William N., Zuo, Wenwen, Yang, Jinyi, Wang, Feige, Yang, Chenwei, Wu, Xue-Bing, Zhou, Hongyan, Fan, Xiaohui, Jiang, Linhua, Yang, Qian, Varricatt, Watson, Kerr, Tom, Milne, Peter, Benigni, Sam, Wang, Jian-Guo, Zhang, Jujia, Wang, Fang, Wang, Chuan-Jun, Xin, Yu-Xin, Fan, Yu-Feng, Chang, Liang, Zhang, Xiliang, Lun, Bao-Li |
| Contributors | Univ Arizona, Steward Observ |
| Publisher | IOP PUBLISHING LTD |
| Source Sets | University of Arizona |
| Language | English |
| Detected Language | English |
| Type | Article |
| Rights | © 2017. The American Astronomical Society. All rights reserved. |
| Relation | http://stacks.iop.org/0004-637X/838/i=2/a=135?key=crossref.e7b1f079590031c08349a903aff85ece |
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