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Spatial Variation of the Chemical Properties of Massive Star-forming Clumps
Li, Mingyue1,2; Zhou, Jianjun3,4; Esimbek, Jarken3,4; Quan, Donghui3,5; He, Yuxin3,4; Li, Qiang2,3; Zhu, Chunhua1
2019-07-01
Source PublicationASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
ISSN0067-0049
Volume243Issue:1Pages:17
Corresponding AuthorLi, Mingyue(limingyue@xao.ac.cn)
AbstractWe 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.
KeywordISM: kinematics and dynamics ISM: molecules radio lines: ISM stars: formation
DOI10.3847/1538-4365/ab2465
WOS KeywordHCO+ EMISSION ; HCN ; HNC ; REGION ; OMC-1 ; RATIO
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000475641900001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/27207
Collection中国科学院紫金山天文台
Corresponding AuthorLi, Mingyue
Affiliation1.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
Recommended Citation
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.
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