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Chemistry of Protostellar Clumps in the High-mass, Star-forming Filamentary Infrared Dark Cloud G034.43+00.24

文献类型：期刊论文

作者Liu, Hong-Li1; Sanhueza, Patricio2,3; Liu, Tie4; Zavagno, Annie5,6; Tang, Xin-Di7,8; Wu, Yuefang9,10; Zhang, Siju5
刊名ASTROPHYSICAL JOURNAL
出版日期2020-09-01
卷号901期号:1页码:31
关键词Astrochemistry Chemical abundances Interstellar medium Interstellar molecules Star formation
ISSN号0004-637X
DOI10.3847/1538-4357/abadfe
产权排序7
英文摘要To search for the potential chemical dependence on physical conditions, we have carried out the study of chemistry on the nine protostellar clumps of the high-mass star-forming infrared dark cloud G034.43+00.24, with observations of several similar to 1 mm lines by the Atacama Pathfinder EXperiment telescope. They include CO/(CO)-C-13/(CO)-O-18(2-1), HCO+/(HCO+)-C-13(3-2), HCN/(HCN)-C-13(3-2), HNC (3-2), CS/(CS)-S-34(5-4), SiO.(6 -5), SO(6-5), p-H2CO.(3-2), and CH3OH.(5-4). All the clumps are simply grouped into two classes: highluminosity protostellar clumps (MM1-MM4, L-bol > similar to 103 L-circle dot) and low-luminosity protostellar clumps (MM5-MM9, L-bol << 10(3) L-circle dot). Our observations indicate that (CO)-C-13 suffers either no or low depletion in the clump environment of G034.43+00.24 as characterized by a nearly constant level of the (CO)-C-13 abundance distribution. For the remaining relatively dense gas tracers, we find that their abundances tend to get enhanced in the highluminosity protostellar clumps as opposed to the low-luminosity counterparts. We suggest that for most, if not all, of the dense gas tracers the high abundance mainly arises from both the high luminosities and associated outflows of the high-luminosity protostellar clumps while the low abundance could be due to the lack of such active starforming activities in the low-luminosity protostellar clumps.
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WOS关键词CHEMICAL EVOLUTION ; MOLECULAR OUTFLOWS ; ABUNDANCE RATIO ; INTERSTELLAR ; EMISSION ; GAS ; FORMALDEHYDE ; POPULATION ; PRECURSORS ; REGIONS
资助项目Fondecyt[3190161] ; Japan Society for the Promotion of Science (JSPS)[18H01259] ; NSFC[11903070] ; NSFC[11433008] ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of PR China
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000573465800001
出版者IOP PUBLISHING LTD
资助机构Fondecyt ; Japan Society for the Promotion of Science (JSPS) ; NSFC ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of PR China
源URL[http://ir.xao.ac.cn/handle/45760611-7/3670]  
专题恒星形成与演化研究团组
通讯作者Liu, Hong-Li
作者单位1.Univ Concepcion, Dept Astron, Av Esteban Iturra S-N,160-C, Concepcion, Chile
2.Natl Inst Nat Sci, Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan
3.SOKENDAI Grad Univ Adv Studies, Dept Astron Sci, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan
4.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
5.Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France
6.Inst Univ France IUF, Paris, France
7.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
8.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China
9.Peking Univ, Sch Phys, Astron Dept, 5 Yi He Yuan Rd, Beijing 100871, Peoples R China
10.Peking Univ, Kavli Inst Astron & Astrophys, 5 Yi He Yuan Rd, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Hong-Li,Sanhueza, Patricio,Liu, Tie,et al. Chemistry of Protostellar Clumps in the High-mass, Star-forming Filamentary Infrared Dark Cloud G034.43+00.24[J]. ASTROPHYSICAL JOURNAL,2020,901(1):31.
APA Liu, Hong-Li.,Sanhueza, Patricio.,Liu, Tie.,Zavagno, Annie.,Tang, Xin-Di.,...&Zhang, Siju.(2020).Chemistry of Protostellar Clumps in the High-mass, Star-forming Filamentary Infrared Dark Cloud G034.43+00.24.ASTROPHYSICAL JOURNAL,901(1),31.
MLA Liu, Hong-Li,et al."Chemistry of Protostellar Clumps in the High-mass, Star-forming Filamentary Infrared Dark Cloud G034.43+00.24".ASTROPHYSICAL JOURNAL 901.1(2020):31.

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