Spatial Variation of the Chemical Properties of Massive Star-forming Clumps

doi:10.3847/1538-4365/ab2465

	Spatial Variation of the Chemical Properties of Massive Star-forming Clumps
	Li, Mingyue 1,2; Zhou, Jianjun 3,4; Esimbek, Jarken 3,4; Quan, Donghui 3,5; He, Yuxin 3,4; Li, Qiang 2,3; Zhu, Chunhua 1
刊名	ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
	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
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000475641900001
内容类型	期刊论文
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.