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Dense molecular gas tracers in high mass star formation regions

文献类型：期刊论文

作者Ma, Hong-Jun1; Gao, Yu1; Wu, Jing-Wen2,3
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2016-02-01
卷号16期号:2
关键词ISM: clouds ISM: molecules stars: formation
英文摘要We report the FCRAO observations that mapped HCN (1-0), CS (2-1), HNC (1-0) and HCO+ (1-0) in ten high-mass star forming cores associated with water masers. We present velocity integrated intensity maps of the four lines for these dense cores, compare their line profiles, and derive physical properties of these cores. We find that these four tracers identify areas with similar properties in these massive dense cores, and in most cases, the emissions of HCN and HCO+ are stronger than those of HNC and CS. We also use the line ratios of HCO+/HCN, HNC/HCN and HNC/HCO+ as the diagnostics to explore the environment of these high-mass star forming regions, and find that most of the cores agree with the model that photodominated regions dominate the radiation field, except for W44, for which the radiation field is similar to an X-ray dominated region.
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
关键词[WOS]SUPERNOVA REMNANT W44 ; INFRARED GALAXIES ; FORMING REGIONS ; HCO+ EMISSION ; WATER MASERS ; AB-INITIO ; HCN ; CLUSTERS ; CLOUDS ; CLUMPS
收录类别SCI
语种英语
WOS记录号WOS:000369252500005
源URL[http://libir.pmo.ac.cn/handle/332002/16125]  
专题紫金山天文台_卫星精密定轨及应用研究团组
作者单位1.Chinese Acad Sci, Key Lab Radio Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式
GB/T 7714		 Ma, Hong-Jun,Gao, Yu,Wu, Jing-Wen. Dense molecular gas tracers in high mass star formation regions[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(2).
APA Ma, Hong-Jun,Gao, Yu,&Wu, Jing-Wen.(2016).Dense molecular gas tracers in high mass star formation regions.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(2).
MLA Ma, Hong-Jun,et al."Dense molecular gas tracers in high mass star formation regions".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.2(2016).

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来源：紫金山天文台

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