Tracing the Evolutionary Stage of Low-mass Dense Cores by Using the Abundance Ratio of SO to SO2
文献类型：期刊论文
| 作者 | Tang, Meng-Yao5; Qin, Sheng-Li6; Liu, Tie1; Peng, Ya-Ping2; Yang, Dong-Ting6; Zhang, Chao3; Li, Xiao-Hu4; Chen, Yan-Hui5; Li, Shu-Jie5; Chang, Fa-Xian2,5 |
| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2025-09-01 |
| 卷号 | 25期号:9页码:095020 |
| 关键词 | stars: formation stars: evolution submillimeter: ISM ISM: molecules |
| ISSN号 | 1674-4527 |
| DOI | 10.1088/1674-4527/adef19 |
| 产权排序 | 6 |
| 英文摘要 | Sulfur-bearing molecules are frequently detected in star-forming regions. The abundance ratio of SO to SO2 (hereafter, SO/SO2 ratio) has been proposed as a potential evolutionary tracer of star formation because tentative correlations have been found between SO/SO2 ratio and evolutionary stages. Nonetheless, the lack of high-resolution observations and extensive statistical analyses of large samples raises questions regarding its efficacy as an evolutionary tracer. In this study, we analyze 31 protostellar cores with both SO and SO2 detection to investigate the relationship between the SO/SO2 ratio and two evolutionary parameters of chemical richness factor and gas temperatures. The correlations between SO/SO2 ratio and evolutionary parameters have been found, but these correlations are mainly contributed by low-mass cores rather than high-mass cores. Our findings suggest that the SO/SO2 ratio serves as a reliable evolutionary tracer for low-mass dense cores. In high-mass cores, the relationship between the SO/SO2 ratio and evolutionary stage remains ambiguous. This likely arises from both vigorous stellar feedback effects and the potential absence of distinct evolutionary stages analogous to those in low-mass cores. Consequently, higher-resolution observations with expanded statistical samples are required to assess the viability of SO/SO2 ratio as an evolutionary tracer for high-mass cores. |
| WOS关键词 | SULFUR CHEMISTRY ; LINE SURVEY ; CHEMICAL-COMPOSITION ; HOT CORES ; MOLECULES ; PROTOSTAR ; CLOCKS ; SHOCKS ; DISK |
| 资助项目 | National Natural Science Foundation of China (NSFC)[12203011] ; National Natural Science Foundation of China (NSFC)[12033005] ; Yunnan provincial Department of Science and Technology[202101BA070001-261] ; Yunnan University Laboratory Open Project ; PhD research startup foundation of Chuxiong Normal University ; Xinjiang Uygur Autonomous Region of China ; International partnership program of Chinese Academy of Sciences[114231KYSB20200009] ; Shanghai Pujiang Program[20PJ1415500] ; China Manned Space Project[CMS-CSST-2021-B06] ; NSFC[12473025] ; NSFC[12303028] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2024D01E37] ; Yunnan province Xingdian talent support program |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001550035300001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Natural Science Foundation of China (NSFC) ; Yunnan provincial Department of Science and Technology ; Yunnan University Laboratory Open Project ; PhD research startup foundation of Chuxiong Normal University ; Xinjiang Uygur Autonomous Region of China ; International partnership program of Chinese Academy of Sciences ; Shanghai Pujiang Program ; China Manned Space Project ; NSFC ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; Yunnan province Xingdian talent support program |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/8048]  |
| 专题 | 天体化学研究团组 |
| 通讯作者 | Tang, Meng-Yao |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Kunming Univ Sci & Technol, Fac Sci, Dept Phys, Kunming 650500, Peoples R China 3.Anqing Normal Univ, Inst Astron & Astrophys, Sch Math & Phys, Anqing 246001, Peoples R China 4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 5.Chuxiong Normal Univ, Inst Astrophys, Chuxiong 675000, Peoples R China 6.Yunnan Univ, Sch Phys & Astron, Kunming 650011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Meng-Yao,Qin, Sheng-Li,Liu, Tie,et al. Tracing the Evolutionary Stage of Low-mass Dense Cores by Using the Abundance Ratio of SO to SO2[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2025,25(9):095020. |
| APA | Tang, Meng-Yao.,Qin, Sheng-Li.,Liu, Tie.,Peng, Ya-Ping.,Yang, Dong-Ting.,...&Ruan, Meng.(2025).Tracing the Evolutionary Stage of Low-mass Dense Cores by Using the Abundance Ratio of SO to SO2.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,25(9),095020. |
| MLA | Tang, Meng-Yao,et al."Tracing the Evolutionary Stage of Low-mass Dense Cores by Using the Abundance Ratio of SO to SO2".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 25.9(2025):095020. |
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来源：新疆天文台
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