XAO OpenIR
Molecular Clump Extraction Algorithm Based on Local Density Clustering* * Supported by the National Natural Science Foundation of China.
Luo,Xiaoyu1,4; Zheng,Sheng1,4; Huang,Yao1; Zeng,Shuguang1; Zeng,Xiangyun1,3; Jiang,Zhibo2; Chen,Zhiwei2
2022
Source PublicationResearch in Astronomy and Astrophysics
ISSN1674-4527
Volume22Issue:1
AbstractAbstract 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 13CO (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 13CO (J = 1?0) line of M16, respectively.
Corresponding AuthorZeng,Xiangyun()
Keywordmolecular data molecular processes methods: laboratory: molecular
DOI10.1088/1674-4527/ac321d
Language英语
WOS IDIOP:raa_22_1_015003
PublisherNational Astromonical Observatories, CAS and IOP Publishing
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/6113
Collection中国科学院新疆天文台
Corresponding AuthorZeng,Xiangyun
Affiliation1.Center for Astronomy and Space Sciences, China Three Gorges University, Yichang 443000, China; xyzeng2018@163.com
2.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, China
3.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China
4.College of Electrical Engineering and New Energy, China Three Gorges University, 8 University Road, Yichang, 443000, China
Corresponding Author AffilicationXinjiang 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* * Supported by the National Natural Science Foundation of China.[J]. Research in Astronomy and Astrophysics,2022,22(1).
APA Luo,Xiaoyu.,Zheng,Sheng.,Huang,Yao.,Zeng,Shuguang.,Zeng,Xiangyun.,...&Chen,Zhiwei.(2022).Molecular Clump Extraction Algorithm Based on Local Density Clustering* * Supported by the National Natural Science Foundation of China..Research in Astronomy and Astrophysics,22(1).
MLA Luo,Xiaoyu,et al."Molecular Clump Extraction Algorithm Based on Local Density Clustering* * Supported by the National Natural Science Foundation of China.".Research in Astronomy and Astrophysics 22.1(2022).
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