Three-dimensional Projection Effects on Chemistry in a Planck Galactic Cold Clump

doi:10.3847/1538-4357/ab7007

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	Three-dimensional Projection Effects on Chemistry in a Planck Galactic Cold Clump
	Ge, J. X.1; Mardones, Diego 1,2; He, J. H.1,3,4; Rawlings, Jonathan M. C.5; Liu, Sheng-Yuan 6; Lee, Jeong-Eun 7; Tatematsu, Ken'ichi 8,9; Liu, Tie 10,11; Zhu, Lei 4; Chang, Qiang 12
刊名	ASTROPHYSICAL JOURNAL
	2020-03-01
卷号	891 期号:1 页码:13
关键词	Astrochemistry Dense interstellar clouds Interstellar abundances Chemical abundances
ISSN号	0004-637X
DOI	10.3847/1538-4357/ab7007
英文摘要	Offsets of molecular line emission peaks from continuum peaks are very common but frequently difficult to explain with a single spherical cloud chemical model. We propose that the spatial projection effects of an irregular three-dimensional (3D) cloud structure can be a solution. This work shows that the idea can be successfully applied to the Planck cold clump G224.4-0.6 by approximating it with four individual spherically symmetric cloud cores whose chemical patterns overlap with each other to produce observable line maps. With the empirical physical structures inferred from the observation data of this clump and a gas-grain chemical model, the four cores can satisfactorily reproduce its 850 mu m continuum map and the diverse peak offsets of CCS, HC3N, and N2H+ simultaneously at chemical ages of about 8 x 10(5) similar to 3 x 10(6) yr. The 3D projection effects on chemistry has the potential to explain such asymmetrical distributions of chemicals in many other molecular clouds.
资助项目	FONDECYT[3170768] ; "Light of West China" program of the Chinese Academy of Sciences (CAS) ; CONICYT[Basal AFB-170002] ; National Natural Science Foundation of China[11873086] ; National Natural Science Foundation of China[U1631237] ; Yunnan Province of China[2017HC018] ; National Research Foundation of Korea[NRF-2018R1A2B6003423] ; Korea Astronomy and Space Science Institute ; CONICYT International Networks for young researchers[REDI170243] ; CONICYT International Networks for young researchers[CONICYT/PCI/REDI170243] ; CONICYT International Networks for young researchers[REDES190113] ; EACOA fellowship from the East Asia Core Observatories Association ; Chinese Academy of Sciences (CAS)
WOS关键词	STARLESS CORE ; DENSE CORES ; DARK CLOUDS ; DEPLETION ; EVOLUTION ; MODELS ; N2H+
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000518952200001
资助机构	FONDECYT ; FONDECYT ; "Light of West China" program of the Chinese Academy of Sciences (CAS) ; "Light of West China" program of the Chinese Academy of Sciences (CAS) ; CONICYT ; CONICYT ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Yunnan Province of China ; Yunnan Province of China ; National Research Foundation of Korea ; National Research Foundation of Korea ; Korea Astronomy and Space Science Institute ; Korea Astronomy and Space Science Institute ; CONICYT International Networks for young researchers ; CONICYT International Networks for young researchers ; EACOA fellowship from the East Asia Core Observatories Association ; EACOA fellowship from the East Asia Core Observatories Association ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; FONDECYT ; FONDECYT ; "Light of West China" program of the Chinese Academy of Sciences (CAS) ; "Light of West China" program of the Chinese Academy of Sciences (CAS) ; CONICYT ; CONICYT ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Yunnan Province of China ; Yunnan Province of China ; National Research Foundation of Korea ; National Research Foundation of Korea ; Korea Astronomy and Space Science Institute ; Korea Astronomy and Space Science Institute ; CONICYT International Networks for young researchers ; CONICYT International Networks for young researchers ; EACOA fellowship from the East Asia Core Observatories Association ; EACOA fellowship from the East Asia Core Observatories Association ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; FONDECYT ; FONDECYT ; "Light of West China" program of the Chinese Academy of Sciences (CAS) ; "Light of West China" program of the Chinese Academy of Sciences (CAS) ; CONICYT ; CONICYT ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Yunnan Province of China ; Yunnan Province of China ; National Research Foundation of Korea ; National Research Foundation of Korea ; Korea Astronomy and Space Science Institute ; Korea Astronomy and Space Science Institute ; CONICYT International Networks for young researchers ; CONICYT International Networks for young researchers ; EACOA fellowship from the East Asia Core Observatories Association ; EACOA fellowship from the East Asia Core Observatories Association ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; FONDECYT ; FONDECYT ; "Light of West China" program of the Chinese Academy of Sciences (CAS) ; "Light of West China" program of the Chinese Academy of Sciences (CAS) ; CONICYT ; CONICYT ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Yunnan Province of China ; Yunnan Province of China ; National Research Foundation of Korea ; National Research Foundation of Korea ; Korea Astronomy and Space Science Institute ; Korea Astronomy and Space Science Institute ; CONICYT International Networks for young researchers ; CONICYT International Networks for young researchers ; EACOA fellowship from the East Asia Core Observatories Association ; EACOA fellowship from the East Asia Core Observatories Association ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS)
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/54466]
专题	中国科学院国家天文台
通讯作者	Ge, J. X.
作者单位	1.Univ Chile, Dept Astron, Camino Observ 1515, Santiago, Chile 2.Max Planck Inst Extraterr Phys, Ctr Astrochem Studies, Giessenbachstr 1, D-85748 Garching, Germany 3.Chinese Acad Sci, Yunnan Observ, 396 Yangfangwang, Kunming 650216, Yunnan, Peoples R China 4.Chinese Acad Sci, South Amer Ctr Astron, Natl Astron Observ, Beijing 100012, Peoples R China 5.UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England 6.Acad Sinica, Inst Astron & Astrophys, 11F Astron Math Bldg,AS NTU 1,Sect 4,Roosevelt Rd, Taipei 10617, Taiwan 7.Kyung Hee Univ, Sch Space Res, Yongin, South Korea 8.Natl Inst Nat Sci, Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan 9.SOKENDAI Grad Univ Adv Studies, Dept Astron Sci, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan 10.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
推荐引用方式 GB/T 7714	Ge, J. X.,Mardones, Diego,He, J. H.,et al. Three-dimensional Projection Effects on Chemistry in a Planck Galactic Cold Clump[J]. ASTROPHYSICAL JOURNAL,2020,891(1):13.
APA	Ge, J. X..,Mardones, Diego.,He, J. H..,Rawlings, Jonathan M. C..,Liu, Sheng-Yuan.,...&Feng, S..(2020).Three-dimensional Projection Effects on Chemistry in a Planck Galactic Cold Clump.ASTROPHYSICAL JOURNAL,891(1),13.
MLA	Ge, J. X.,et al."Three-dimensional Projection Effects on Chemistry in a Planck Galactic Cold Clump".ASTROPHYSICAL JOURNAL 891.1(2020):13.