NAOC Open IR
Chemical evolution of HC3N in dense molecular clouds
Yu, Naiping1,2; Wang, Jun-Jie1,2; Xu, Jin-Long1
2019-11-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume489Issue:4Pages:4497-4512
AbstractWe investigated the chemical evolution of HC3N in six dense molecular clouds, using archival available data from the Herschel infrared Galactic Plane Survey (Hi-GAL) and the Millimeter Astronomy Legacy Team Survey at 90 GHz (MALT90). Radio sky surveys of the Multi-Array Galactic Plane Imaging Survey (MAGPIS) and the Sydney University Molonglo Sky Survey (SUMSS) indicate these dense molecular clouds are associated with ultracompact H II (UCH II) regions and/or classical H II regions. We find that in dense molecular clouds associated with normal classical H II regions, the abundance of HC3N begins to decrease or reaches a plateau when the dust temperature gets hot. This implies UV photons could destroy the molecule of HC3N. On the other hand, in the other dense molecular clouds associated with UCH II regions, we find the abundance of HC3N increases with dust temperature monotonously, implying HC3N prefers to be formed in warm gas. We also find that the spectra of HC3N (10-9) in G12.804-0.199 and RCW 97 show wing emissions, and the abundance of HC3N in these two regions increases with its non-thermal velocity width, indicating HC3N might be a shock origin species. We further investigated the evolutionary trend of N(N2H+)/N(HC3N) column density ratio, and found this ratio could be used as a chemical evolutionary indicator of cloud evolution after the massive star formation is started.
Keywordstars: formation stars: massive ISM: abundances ISM: clouds ISM: molecules
Funding OrganizationCommonwealth of Australia ; Commonwealth of Australia ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Commonwealth of Australia ; Commonwealth of Australia ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Commonwealth of Australia ; Commonwealth of Australia ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Commonwealth of Australia ; Commonwealth of Australia ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS
DOI10.1093/mnras/stz2431
WOS KeywordCORES ; CYANOPOLYYNES ; SPECTROSCOPY ; EMISSION ; REGIONS ; SEARCH ; HC5N ; NH3
Language英语
Funding ProjectCommonwealth of Australia ; Youth Innovation Promotion Association of CAS
Funding OrganizationCommonwealth of Australia ; Commonwealth of Australia ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Commonwealth of Australia ; Commonwealth of Australia ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Commonwealth of Australia ; Commonwealth of Australia ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Commonwealth of Australia ; Commonwealth of Australia ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000489302400002
PublisherOXFORD UNIV PRESS
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/28046
Collection中国科学院国家天文台
Corresponding AuthorYu, Naiping; Xu, Jin-Long
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.NAOC TU Joint Ctr Astrophys, Lhasa 850000, Peoples R China
Recommended Citation
GB/T 7714
Yu, Naiping,Wang, Jun-Jie,Xu, Jin-Long. Chemical evolution of HC3N in dense molecular clouds[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,489(4):4497-4512.
APA Yu, Naiping,Wang, Jun-Jie,&Xu, Jin-Long.(2019).Chemical evolution of HC3N in dense molecular clouds.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,489(4),4497-4512.
MLA Yu, Naiping,et al."Chemical evolution of HC3N in dense molecular clouds".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 489.4(2019):4497-4512.
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