The Deuterium Fractionation of NH3 in Massive Star-forming Regions
文献类型：期刊论文
| 作者 | Li, Yuqiang9,10; Wang, Junzhi8; Li, Juan7,10; Rayalacheruvu, Prathap1,6; Majumdar, Liton1,6; Yan, Yaoting5; Quan, Donghui3,4 ; Lu, Xing10; Zheng, Siqi2,7,9,10
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2025 |
| 卷号 | 978期号:2页码:25 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ad8444 |
| 产权排序 | 9 |
| 英文摘要 | Deuteration is sensitive to environmental conditions in star-forming regions. To investigate NH2D chemistry, we compared the spatial distribution of ortho-NH2D 111s-101a , NH3(1,1), and NH3(2,2) in 12 late-stage massive star-forming regions. By averaging several pixels along the spatial slices of ortho-NH2D 111s-101a , we obtained the deuterium fractionation of NH3. In seven targets, the deuterium fractionation of NH3 shows a decreasing trend with increasing rotational temperature. This trend is less clear in the remaining five sources, likely due to limited spatial resolution. However, when considering all 12 sources together, the anticorrelation between NH3 deuterium fractionation and rotational temperature becomes less significant, suggesting that other physical parameters may influence the fractionation. Additionally, we found that the region of highest deuterium fractionation of NH3 is offset from the NH3 peak in each source, likely because the temperature is higher near the NH3 peaks and NH2D may be depleted from the gas phase as the molecular cloud core evolves, as well as the increased release of CO from grains into the gas phase. |
| WOS关键词 | H-II-REGIONS ; TRIGONOMETRIC PARALLAXES ; DEUTERATED MOLECULES ; IONIZATION FRACTION ; EVOLUTIONARY TRACER ; PHYSICAL-PROPERTIES ; INTERSTELLAR-MEDIUM ; INITIAL CONDITIONS ; RADIO-CONTINUUM ; AMMONIA |
| 资助项目 | National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; IRAM 30 m telescope[042-19] ; IRAM 30 m telescope[147-19] ; IRAM 30 m telescope[127-20] ; INSU/CNRS (France) ; MPG (Germany) ; IGN (Spain) ; National Research Council of Canada ; Canadian Space Agency, CANARIE ; Canadian Foundation for Innovation ; National Science Foundation[AST-1616635] ; China Scholarship Council (CSC) ; [2022YFA1603101] ; [12173067] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001394233900001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; IRAM 30 m telescope ; INSU/CNRS (France) ; MPG (Germany) ; IGN (Spain) ; National Research Council of Canada ; Canadian Space Agency, CANARIE ; Canadian Foundation for Innovation ; National Science Foundation ; China Scholarship Council (CSC) |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7374]  |
| 专题 | 天体化学研究团组 |
| 通讯作者 | Li, Yuqiang; Wang, Junzhi; Li, Juan |
| 作者单位 | 1.Natl Inst Sci Educ & Res, Sch Earth & Planetary Sci, Jatni 752050, Odisha, India 2.Univ Ko?ln, Phys Inst 1, Zulpicher Str 77, D-50937 Cologne, Germany 3.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China 4.Zhejiang Lab, Res Ctr Intelligent Comp Platforms, Hangzhou 311100, Peoples R China 5.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 6.Homi Bhabha Natl Inst, Training Sch Complex, Mumbai 400094, India 7.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210033, Peoples R China 8.Guangxi Univ, Dept Phys, Guangxi Key Lab Relativist Astrophys, Nanning 530004, Peoples R China 9.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 10.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yuqiang,Wang, Junzhi,Li, Juan,et al. The Deuterium Fractionation of NH3 in Massive Star-forming Regions[J]. ASTROPHYSICAL JOURNAL,2025,978(2):25. |
| APA | Li, Yuqiang.,Wang, Junzhi.,Li, Juan.,Rayalacheruvu, Prathap.,Majumdar, Liton.,...&Zheng, Siqi.(2025).The Deuterium Fractionation of NH3 in Massive Star-forming Regions.ASTROPHYSICAL JOURNAL,978(2),25. |
| MLA | Li, Yuqiang,et al."The Deuterium Fractionation of NH3 in Massive Star-forming Regions".ASTROPHYSICAL JOURNAL 978.2(2025):25. |
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