| Title | The Physical Constraints on a New LoBAL QSO at z=4.82 |
| Authors | 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 |
| Affiliation | Chinese Acad Sci, Yunnan Observ, Kunming 650216, Peoples R China. Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China. Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650216, Peoples R China. Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. Univ Sci & Technol China, CAS Key Lab Res Galaxies & Cosmol, Dept Astron, Hefei, Peoples R China. Penn State Univ, Davey Lab, Dept Astron & Astrophys, Inst Gravitat & Cosmos, University Pk, PA 16802 USA. Univ Connecticut, Dept Phys, 2152 Hillside Rd Unit 3046, Storrs, CT 06269 USA. Penn State Univ, Dept Phys, University Pk, PA 16802 USA. Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China. Peking Univ, Dept Astron, Sch Phys, Beijing 100871, Peoples R China. Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China. Polar Res Inst China, 451 Jinqiao Rd, Shanghai 200136, Peoples R China. UKIRT Observ, Hilo, HI 96720 USA. Univ Chinese Acad Sci, Beijing 100049, Peoples R China. |
| Keywords | galaxies: high-redshift quasars: absorption lines quasars: general quasars: individual (J0122+1216) BROAD-ABSORPTION-LINE DIGITAL-SKY-SURVEY ACTIVE GALACTIC NUCLEI BLACK-HOLE MASS QUASI-STELLAR OBJECTS EMISSION-LINE DATA RELEASE C-IV MULTIYEAR TIMESCALES DISTANT QUASARS |
| Issue Date | 2017 |
| Publisher | ASTROPHYSICAL JOURNAL |
| Citation | ASTROPHYSICAL JOURNAL.2017,838(2). |
| Abstract | 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. |
| URI | http://hdl.handle.net/20.500.11897/474324 |
| ISSN | 0004-637X |
| DOI | 10.3847/1538-4357/aa65d6 |
| Indexed | SCI(E) |
| Appears in Collections: | 物理学院 科维理天文与天体物理研究所 |
