The ALMA-QUARKS Survey: Fibers' Role in Star Formation Unveiled in an Intermediate-mass Protocluster Region of the Vela D Cloud
文献类型：期刊论文
| 作者 | Yang, Dongting5; Liu, Hong-Li5; Liu, Tie4; Tej, Anandmayee3; Liu, Xunchuan4; He, Jinhua2; Garay, Guido1; Stutz, Amelia23,24; Zhu, Lei22; Qin, Sheng-Li5 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 976期号:2页码:241 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ad8919 |
| 产权排序 | 16 |
| 英文摘要 | In this paper, we present a detailed analysis of the IRS 17 filament within the intermediate-mass protocluster IRAS 08448-4343 (of similar to 10(3)L(circle dot)), using ALMA data from the ATOMS 3 mm and QUARKS 1.3 mm surveys. The IRS 17 filament, which spans similar to 54,000 au (0.26 pc) in length and similar to 4000 au (0.02 pc) in width, exhibits a complex, multicomponent velocity field and harbors hierarchical substructures. These substructures include three bundles of seven velocity-coherent fibers and 29 dense (n similar to 10(8) cm(-3)) condensations. The fibers have a median length of similar to 4500 au and a median width of similar to 1400 au. Among these fibers, four are identified as "fertile," each hosting at least three dense condensations, which are regarded as the "seeds" of star formation. While the detected cores are randomly spaced within the IRS 17 filament based on the 3 mm dust continuum image, periodic spacing (similar to 1600 au) of condensations is observed in the fertile fibers according to the 1.3 mm dust map, consistent with the predictions of linear isothermal cylinder fragmentation models. These findings underscore the crucial role of fibers in star formation and suggest a hierarchical fragmentation process that extends from the filament to the fibers and, ultimately, to the smallest-scale condensations. |
| WOS关键词 | MAGNETIC-FIELD ORIENTATION ; MOLECULAR CLOUDS ; SOURCE CATALOG ; DENSE CORES ; 3-MILLIMETER OBSERVATIONS ; INITIAL CONDITIONS ; FORMING FILAMENTS ; PRESTELLAR CORE ; MAIN CLOUD ; FRAGMENTATION |
| 资助项目 | National Key R&D Program of China[2022YFA1603101] ; Yunnan Fundamental Research Project[202301AT070118] ; Yunnan Fundamental Research Project[202401AS070121] ; NSFC[12033005] ; NSFC[JP22H01271] ; NSFC[JP23H01221] ; CPSF[2022M723278] ; JSPS[80NM0018D0004] ; Fondecyt Postdoctoral fellowship[3220162] ; Fondecyt Postdoctoral fellowship[FB210003] ; ALMA[2019.1.00685] ; ALMA[2021.1.00095] ; ALMA[2023.1.00425] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001376824900001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Key R&D Program of China ; Yunnan Fundamental Research Project ; NSFC ; CPSF ; JSPS ; Fondecyt Postdoctoral fellowship ; ALMA |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7340]  |
| 专题 | 恒星形成与演化研究团组 |
| 通讯作者 | Liu, Hong-Li; Liu, Tie; Tej, Anandmayee; Liu, Xunchuan |
| 作者单位 | 1.Univ Chile, Dept Astron, Casilla 36-D, Santiago, Chile 2.Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China 3.Indian Inst Space Sci & Technol, Thiruvananthapuram 695547, Kerala, India 4.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 5.Yunnan Univ, Sch Phys & Astron, Kunming 650091, Yunnan, Peoples R China 6.Univ Chinese Acad Sci, Beijing, Peoples R China 7.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 Stree, Urumqi 830011, Xinjiang, Peoples R China 8.Univ Chile, Dept Astron, Santiago 7591245, Chile 9.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA 10.Univ Catolica Norte, Inst Astron, Ave Angamos 0610, Antofagasta, Chile |
| 推荐引用方式 GB/T 7714 | Yang, Dongting,Liu, Hong-Li,Liu, Tie,et al. The ALMA-QUARKS Survey: Fibers' Role in Star Formation Unveiled in an Intermediate-mass Protocluster Region of the Vela D Cloud[J]. ASTROPHYSICAL JOURNAL,2024,976(2):241. |
| APA | Yang, Dongting.,Liu, Hong-Li.,Liu, Tie.,Tej, Anandmayee.,Liu, Xunchuan.,...&Xie, Jinjin.(2024).The ALMA-QUARKS Survey: Fibers' Role in Star Formation Unveiled in an Intermediate-mass Protocluster Region of the Vela D Cloud.ASTROPHYSICAL JOURNAL,976(2),241. |
| MLA | Yang, Dongting,et al."The ALMA-QUARKS Survey: Fibers' Role in Star Formation Unveiled in an Intermediate-mass Protocluster Region of the Vela D Cloud".ASTROPHYSICAL JOURNAL 976.2(2024):241. |
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