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Quantifying the anisotropic density structure of the Central Molecular Zone - a 2D correlation function approach
Cai, Xiu-Yu1,2; Li, Guang-Xing3; Qian, Lei1
2021-10-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume21Issue:8Pages:5
AbstractThe Central Molecular Zone (CMZ) is a ring-like structure sitting at the center of the Milky Way. Using the 870 mu m continuum map from the APEX Telescope Large Area Survey of the Galaxy (ATLASGAL), we study anisotropy in the density structure of gas in the CMZ utilizing the 2D correlation function. To quantify the spatial anisotropy, we define the critical angle theta(half), as well as the anisotropy parameter A pi/4 theta(half) - 1. We find that the density structure is strongly anisotropic at a large scale (similar to 100 pc), and the degree of spatial anisotropy decreases with decreasing scale. At the scale of similar to 10 pc, the structure is still mildly anisotropic. In our analyses, we provide a quantitative description of the anisotropic density structure of gas in the CMZ, and the formalism can be applied to different regions to study their differences.
Keywordgalaxies: ISM ISM: molecules ISM: structure
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Yunnan University ; Yunnan University ; NSFC ; NSFC ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Yunnan University ; Yunnan University ; NSFC ; NSFC ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Yunnan University ; Yunnan University ; NSFC ; NSFC ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Yunnan University ; Yunnan University ; NSFC ; NSFC
DOI10.1088/1674-4527/21/8/194
WOS KeywordCLOUDS ; FILAMENTS ; GAS
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[U1631237] ; Youth Innovation Promotion Association of CAS[2018075] ; Yunnan University ; NSFC[W820301904] ; NSFC[12033005]
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Yunnan University ; Yunnan University ; NSFC ; NSFC ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Yunnan University ; Yunnan University ; NSFC ; NSFC ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Yunnan University ; Yunnan University ; NSFC ; NSFC ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Yunnan University ; Yunnan University ; NSFC ; NSFC
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000711657600001
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/74431
Collection中国科学院国家天文台
Corresponding AuthorLi, Guang-Xing; Qian, Lei
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Yunnan Univ, South Western Inst Astron Res, Kunming 650500, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Cai, Xiu-Yu,Li, Guang-Xing,Qian, Lei. Quantifying the anisotropic density structure of the Central Molecular Zone - a 2D correlation function approach[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(8):5.
APA Cai, Xiu-Yu,Li, Guang-Xing,&Qian, Lei.(2021).Quantifying the anisotropic density structure of the Central Molecular Zone - a 2D correlation function approach.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(8),5.
MLA Cai, Xiu-Yu,et al."Quantifying the anisotropic density structure of the Central Molecular Zone - a 2D correlation function approach".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.8(2021):5.
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