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Chemical Variations Across the TMC-1 Boundary: Molecular Tracers from the Translucent Phase to the Dense Phase

文献类型：期刊论文

作者Chen, Long-Fei7; Li, Di5,6,7; Quan, Donghui4; Zhang, Xia3; Chang, Qiang2; Li, Xiaohu3; Xiao, Lin1
刊名ASTROPHYSICAL JOURNAL
出版日期2022-04-01
卷号928期号:2页码:15
ISSN号0004-637X
DOI10.3847/1538-4357/ac5a45
通讯作者Chen, Long-Fei(chenlongf@nao.cas.cn)
英文摘要We investigated the chemical evolutions of gas-phase and grain-surface species across the Taurus molecular cloud-1 (TMC-1) filament from the translucent phase to the dense phase. By comparing observations with modeling results from an up-to-date chemical network, we examined the conversion processes for the carbon-, oxygen-, nitrogen-, and sulfur-bearing species, i.e., from their initial atomic form to their main molecular reservoir form both in the gas phase and on the grain surface. The conversion processes were found to depend on the species and A ( V ). The effect of initial carbon-to-oxygen elemental abundances ratio (C/O) by varying O on the chemistry was explored, and an initial carbon elemental abundance of 2.5 x 10(-4) and a C/O ratio of 0.5 could best reproduce the abundances of most observed molecules at TMC-1 CP, where more than 90 molecules have been identified. Based on the TMC-1 condition, we predicted a varied grain ice composition during the evolutions of molecular clouds, with H2O ice as the dominant ice composition at A ( V ) > 4 mag, CO2 ice as the dominant ice composition at A ( V ) <4 mag, while CO ice severely decreased at A ( V ) around 4-5 mag.
WOS关键词POLYCYCLIC AROMATIC-HYDROCARBONS ; NARROW SELF-ABSORPTION ; CHEMISTRY ; CLOUD ; GAS ; DIFFUSE ; DISCOVERY ; DUST ; ABUNDANCE ; SULFUR
资助项目National Natural Science Foundation of China (NSFC)[11988101] ; National Natural Science Foundation of China (NSFC)[11725313] ; National Natural Science Foundation of China (NSFC)[11703075] ; National Natural Science Foundation of China (NSFC)[11973075] ; science and technology projects in Jilin Province Department of Education[JJKH20200607KJ] ; CAS Light of West China Program[2017-XBQNXZ-B-020] ; Heaven Lake Hundred-talent Program of the Xinjiang Uygur Autonomous Region of China
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP Publishing Ltd
WOS记录号WOS:000780061800001
资助机构National Natural Science Foundation of China (NSFC) ; science and technology projects in Jilin Province Department of Education ; CAS Light of West China Program ; Heaven Lake Hundred-talent Program of the Xinjiang Uygur Autonomous Region of China
源URL[http://ir.xao.ac.cn/handle/45760611-7/4607]  
专题天体化学研究团组
通讯作者Chen, Long-Fei
作者单位1.Changchun Inst Technol, Coll Sci, Changchun 130012, Jilin, Peoples R China
2.Shandong Univ Technol, Sch Phys & Optoelect Engn, Zibo 255000, Peoples R China
3.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China
4.Eastern Kentucky Univ, Dept Chem, 521 Lancaster Ave, Richmond, KY 40475 USA
5.Univ KwaZulu Natal, NAOC UKZN Computat Astrophys Ctr, ZA-4000 Durban, South Africa
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
7.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Long-Fei,Li, Di,Quan, Donghui,et al. Chemical Variations Across the TMC-1 Boundary: Molecular Tracers from the Translucent Phase to the Dense Phase[J]. ASTROPHYSICAL JOURNAL,2022,928(2):15.
APA Chen, Long-Fei.,Li, Di.,Quan, Donghui.,Zhang, Xia.,Chang, Qiang.,...&Xiao, Lin.(2022).Chemical Variations Across the TMC-1 Boundary: Molecular Tracers from the Translucent Phase to the Dense Phase.ASTROPHYSICAL JOURNAL,928(2),15.
MLA Chen, Long-Fei,et al."Chemical Variations Across the TMC-1 Boundary: Molecular Tracers from the Translucent Phase to the Dense Phase".ASTROPHYSICAL JOURNAL 928.2(2022):15.

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