PMO OpenIR  > 卫星精密定轨及应用研究团组
Dense molecular gas tracers in high mass star formation regions
Ma, Hong-Jun1; Gao, Yu1; Wu, Jing-Wen2,3
2016-02-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
Volume16Issue:2
AbstractWe 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.
KeywordIsm: Clouds Ism: Molecules Stars: Formation
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/1674-4527/16/2/025
WOS KeywordSUPERNOVA REMNANT W44 ; INFRARED GALAXIES ; FORMING REGIONS ; HCO+ EMISSION ; WATER MASERS ; AB-INITIO ; HCN ; CLUSTERS ; CLOUDS ; CLUMPS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000369252500005
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/16125
Collection卫星精密定轨及应用研究团组
Affiliation1.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
Recommended Citation
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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