Tracking Outflow Using Line Locking (TOLL). I. The Case Study of Quasar J221531-174408
文献类型：期刊论文
| 作者 | Chen, Chen5; Yi WM(易卫敏)4 ; He, Zhicheng3; Hamann, Fred2; Ma, Bo1
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2024-11-01 |
| 卷号 | 975期号:2 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ad7e14 |
| 产权排序 | 第2完成单位 |
| 文献子类 | Article |
| 英文摘要 | Investigating line-locked phenomena within quasars is crucial for understanding the dynamics of quasar outflows, the role of radiation pressure in astrophysical flows, and the star formation history and metallicity of the early Universe. We have initiated the Tracking Outflow by Line Locking project to study quasar outflow by studying line-locking signatures using high-resolution high-signal-to-noise-ratio quasar spectra. In this paper, we present a case study of the line-locking signatures from QSO J221531-174408. The spectrum was obtained using the Very Large Telescope's UV Visual Echelle Spectrograph. We first identify associated absorbers in the spectrum using C iv, N v, and Si iv doublets and measure their velocity shifts, covering fractions, and column densities through a line-profile-fitting technique. Then we compare the velocity separations between different absorbers, and detect nine pairs of line-locked C iv doublets, three pairs of line-locked N v doublets, and one pair of line-locked Si iv doublets. This is one of the four quasars known to possess line-locked signatures in C iv, Si iv, and N v at the same time. We also find three complex line-locked systems, where three to five absorbers are locked together through multi-ion doublets. Our study suggests that line locking is a common phenomenon in the quasar outflows, and theoretical models involving more than two clouds and one ionic doublet are needed in the future to explain the formation of these complex line-locking signatures. |
| 学科主题 | 天文学 ; 星系与宇宙学 |
| URL标识 | 查看原文 |
| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| WOS关键词 | BROAD ABSORPTION-LINE ; C-IV ABSORPTION ; BLACK-HOLES ; RADIATION-PRESSURE ; OPTIMAL EXTRACTION ; GALAXY FORMATION ; SCALE OUTFLOWS ; GALACTIC WINDS ; DATA RELEASE ; N-V |
| 资助项目 | National Natural Science Foundation of China[12103097]; National Natural Science Foundation of China[12073092]; National Natural Science Foundation of China[12222304]; National Natural Science Foundation of China[12192220]; National Natural Science Foundation of China[12192221]; Zhuhai College of Science and Technology |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001348934800001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Natural Science Foundation of China[12103097, 12073092, 12222304, 12192220, 12192221] ; Zhuhai College of Science and Technology |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/27674]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） |
| 作者单位 | 1.School of Physics & Astronomy, Sun Yat-Sen University, Zhuhai 519000, People's Republic of China; mabo8@mail.sysu.edu.cn 2.Department of Physics and Astronomy, University of California Riverside, Riverside, CA 92507, USA; 3.CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, People's Republic of China; 4.Yunnan Observatories, Kunming 650216, People's Republic of China; 5.Zhuhai College of Science and Technology, Zhuhai 519000, People's Republic of China; |
| 推荐引用方式 GB/T 7714 | Chen, Chen,Yi WM,He, Zhicheng,et al. Tracking Outflow Using Line Locking (TOLL). I. The Case Study of Quasar J221531-174408[J]. ASTROPHYSICAL JOURNAL,2024,975(2). |
| APA | Chen, Chen,易卫敏,He, Zhicheng,Hamann, Fred,&Ma, Bo.(2024).Tracking Outflow Using Line Locking (TOLL). I. The Case Study of Quasar J221531-174408.ASTROPHYSICAL JOURNAL,975(2). |
| MLA | Chen, Chen,et al."Tracking Outflow Using Line Locking (TOLL). I. The Case Study of Quasar J221531-174408".ASTROPHYSICAL JOURNAL 975.2(2024). |
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来源：云南天文台
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