Molecular Clump Extraction Algorithm Based on Local Density Clustering*

doi:10.1088/1674-4527/ac321d

	Molecular Clump Extraction Algorithm Based on Local Density Clustering*
	Luo, Xiaoyu 1,4; Zheng, Sheng 1,4; Huang, Yao 1; Zeng, Shuguang 1; Zeng, Xiangyun 1,3; Jiang, Zhibo 2; Chen, Zhiwei 2
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2022
卷号	22 期号:1 页码:11
关键词	molecular data molecular processes methods laboratory molecular
ISSN号	1674-4527
DOI	10.1088/1674-4527/ac321d
通讯作者	Zeng, Xiangyun(xyzeng2018@163.com)
英文摘要	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.
资助项目	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关键词	STAR-FORMATION ; CO SURVEY ; CLOUDS
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
WOS记录号	WOS:000746158200001
资助机构	National Natural Science Foundation of China ; National Key R&D Program of China ; CAS Key Research Program of Frontier Sciences
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/4461]
专题	新疆天文台_光学天文与技术应用研究室
通讯作者	Zeng, Xiangyun
作者单位	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
推荐引用方式 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):11.
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),11.
MLA	Luo, Xiaoyu,et al."Molecular Clump Extraction Algorithm Based on Local Density Clustering*".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 22.1(2022):11.