Spatial Variation of the Chemical Properties of Massive Star-forming Clumps
文献类型：期刊论文
| 作者 | Li, Mingyue1,2; Zhou, Jianjun3,4; Esimbek, Jarken3,4; Quan, Donghui3,5; He, Yuxin3,4; Li, Qiang2,3; Zhu, Chunhua1 |
| 刊名 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
 |
| 出版日期 | 2019-07-01 |
| 卷号 | 243期号:1页码:17 |
| 关键词 | ISM: kinematics and dynamics ISM: molecules radio lines: ISM stars: formation |
| ISSN号 | 0067-0049 |
| DOI | 10.3847/1538-4365/ab2465 |
| 通讯作者 | Li, Mingyue(limingyue@xao.ac.cn) |
| 英文摘要 | We selected 90 massive star-forming clumps with strong N2H+(1-0), HCO+(1-0), HCN(1-0), and HNC(1-0) emission from the Millimetre Astronomy Legacy Team 90 GHz survey. We obtained Herschel data for all 90 sources and NRAO VLA Sky Survey data for 51 of them. We convolved and regridded all images to the same resolution and pixel size and derived the temperature, H-2 column density, molecules' abundances and abundance, and ratios of each pixel. Our analysis yields three main conclusions. First, the abundances of N2H+, HCO+, HCN, and HNC increase when the column density decreases and the temperature increases, with spatial variations in their abundances dominated by changes in the H-2 column density. Second, the abundance ratios between N2H+, HCO+, HCN, and HNC also display systemic variations as a function of the column density due to the chemical properties of these molecules. Third, the sources associated with the 20 cm continuum emission can be classified into four types based on the behavior of the abundances of the four molecules considered here as a function of this emission. The variations of the first three types could also be attributed to the variation of the H-2 column density. |
| WOS关键词 | HCO+ EMISSION ; HCN ; HNC ; REGION ; OMC-1 ; RATIO |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000475641900001 |
| 出版者 | IOP PUBLISHING LTD |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/27206]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Li, Mingyue |
| 作者单位 | 1.Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100080, Peoples R China 3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 4.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China 5.Eastern Kentucky Univ, Richmond, KY 40475 USA |
| 推荐引用方式 GB/T 7714 | Li, Mingyue,Zhou, Jianjun,Esimbek, Jarken,et al. Spatial Variation of the Chemical Properties of Massive Star-forming Clumps[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2019,243(1):17. |
| APA | Li, Mingyue.,Zhou, Jianjun.,Esimbek, Jarken.,Quan, Donghui.,He, Yuxin.,...&Zhu, Chunhua.(2019).Spatial Variation of the Chemical Properties of Massive Star-forming Clumps.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,243(1),17. |
| MLA | Li, Mingyue,et al."Spatial Variation of the Chemical Properties of Massive Star-forming Clumps".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 243.1(2019):17. |
入库方式： OAI收割
来源：紫金山天文台
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