Molecular Clump Extraction Algorithm Based on Local Density Clustering*

doi:10.1088/1674-4527/ac321d

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	Molecular Clump Extraction Algorithm Based on Local Density Clustering*
	Luo, Xiaoyu 1,4; Zheng, Sheng 1,4; Huang, Yao 1; Zeng, Shuguang 1; Zeng, Xiangyun1,3 ; Jiang, Zhibo 2; Chen, Zhiwei 2
	2022
Source Publication	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN	1674-4527
Volume	22 Issue:1 Pages:015003
Contribution Rank	3
Abstract	The detection and parameterization of molecular clumps are the first step in studying them. We propose a method based on the Local Density Clustering algorithm while physical parameters of those clumps are measured using the Multiple Gaussian Model algorithm. One advantage of applying the Local Density Clustering to the clump detection and segmentation, is the high accuracy under different signal-to-noise levels. The Multiple Gaussian Model is able to deal with overlapping clumps whose parameters can reliably be derived. Using simulation and synthetic data, we have verified that the proposed algorithm could accurately characterize the morphology and flux of molecular clumps. The total flux recovery rate in (CO)-C-13 (J = 1-0) line of M16 is measured as 90.2%. The detection rate and the completeness limit are 81.7% and 20 K km s(-1) in (CO)-C-13 (J = 1-0) line of M16, respectively.
Keyword	molecular data molecular processes methods laboratory molecular
DOI	10.1088/1674-4527/ac321d
Indexed By	SCI
Language	英语
WOS Keyword	STAR-FORMATION ; CO SURVEY ; CLOUDS
Funding Project	National Natural Science Foundation of China[U2031202] ; National Natural Science Foundation of China[11 903 083] ; National Natural Science Foundation of China[11 873 093] ; National Key R&D Program of China[2017YFA0402701] ; CAS Key Research Program of Frontier Sciences[QYZDJ-SSW-SLH047]
WOS Research Area	Astronomy & Astrophysics
WOS Subject	Astronomy & Astrophysics
WOS ID	WOS:000746158200001
Publisher	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Funding Organization	National Natural Science Foundation of China ; National Key R&D Program of China ; CAS Key Research Program of Frontier Sciences
Citation statistics	Cited Times:8[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.xao.ac.cn/handle/45760611-7/4462
Collection	光学天文与技术应用研究室
Corresponding Author	Zeng, Xiangyun
Affiliation	1.China Three Gorges Univ, Ctr Astron & Space Sci, Yichang 443000, Peoples R China 2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210023, Peoples R China 3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 4.China Three Gorges Univ, Coll Elect Engn & New Energy, 8 Univ Rd, Yichang 443000, Peoples R China
Corresponding Author Affilication	Xinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation GB/T 7714	Luo, Xiaoyu,Zheng, Sheng,Huang, Yao,et al. Molecular Clump Extraction Algorithm Based on Local Density Clustering*[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2022,22(1):015003.
APA	Luo, Xiaoyu.,Zheng, Sheng.,Huang, Yao.,Zeng, Shuguang.,Zeng, Xiangyun.,...&Chen, Zhiwei.(2022).Molecular Clump Extraction Algorithm Based on Local Density Clustering*.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,22(1),015003.
MLA	Luo, Xiaoyu,et al."Molecular Clump Extraction Algorithm Based on Local Density Clustering*".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 22.1(2022):015003.

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