The Physical Constraints on a New LoBAL QSO at z?=?4.82
文献类型:期刊论文
作者 | Yi,Weimin1,2,3; Green,Richard4; Bai,Jin-Ming1,2,3; Wang,Tinggui5; Grier,Catherine J.6; Trump,Jonathan R.6,7,8; Brandt,William N.6,8; Zuo,Wenwen9; Yang,Jinyi10; Wang,Feige10 |
刊名 | The Astrophysical Journal
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出版日期 | 2017-04-03 |
卷号 | 838期号:2 |
关键词 | galaxies: high-redshift quasars: absorption lines quasars: general quasars: individual (J0122+1216) |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/aa65d6 |
英文摘要 | 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 ~2.3?×?109 M⊙ and Eddington ratio of ~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% LEdd) 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. |
语种 | 英语 |
WOS记录号 | IOP:0004-637X-838-2-AA65D6 |
出版者 | The American Astronomical Society |
源URL | [http://119.78.226.72/handle/331011/32127] ![]() |
专题 | 中国科学院上海天文台 |
作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China 2.Center for Astronomical Mega-science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, P. R. China 3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China 4.Steward Observatory, University of Arizona, Tucson, AZ 85721-0065, USA 5.CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, China 6.Department of Astronomy & Astrophysics and Institute for Gravitation & the Cosmos, The Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802, USA 7.Department of Physics, University of Connecticut, 2152 Hillside Road Unit 3046, Storrs, CT 06269, USA 8.Department of Physics, Pennsylvania State University, University Park, PA, 16802, USA 9.Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China 10.Department of Astronomy, School of Physics, Peking University, Beijing 100871, China |
推荐引用方式 GB/T 7714 | Yi,Weimin,Green,Richard,Bai,Jin-Ming,et al. The Physical Constraints on a New LoBAL QSO at z?=?4.82[J]. The Astrophysical Journal,2017,838(2). |
APA | Yi,Weimin.,Green,Richard.,Bai,Jin-Ming.,Wang,Tinggui.,Grier,Catherine J..,...&Lun,Bao-Li.(2017).The Physical Constraints on a New LoBAL QSO at z?=?4.82.The Astrophysical Journal,838(2). |
MLA | Yi,Weimin,et al."The Physical Constraints on a New LoBAL QSO at z?=?4.82".The Astrophysical Journal 838.2(2017). |
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来源:上海天文台
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