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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2509.01955 |
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| _version_ | 1866908586976739328 |
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| author | Jiang, Yu Yan, Qing-Zeng Yang, Ji Zheng, Sheng Chen, Xuepeng Su, Yang Jiang, Zhibo Chen, Zhiwei Zhou, Xin Huang, Yao Luo, Xiaoyu Feng, Haoran Liu, De-Jian |
| author_facet | Jiang, Yu Yan, Qing-Zeng Yang, Ji Zheng, Sheng Chen, Xuepeng Su, Yang Jiang, Zhibo Chen, Zhiwei Zhou, Xin Huang, Yao Luo, Xiaoyu Feng, Haoran Liu, De-Jian |
| contents | We present the first comprehensive catalogs of $^{13}$CO clumps from the Milky Way Imaging Scroll Painting (MWISP) project. By developing an equivalent global detection scheme integrated with the FacetClumps algorithm, we successfully extract 71,661 molecular clumps across a high-resolution $^{13}$CO data cube spanning 2310 deg$^2$ from the MWISP Phase I survey. To determine accurate distances, we design an automatic hierarchical distance decision method using signal regions as fundamental objects, effectively resolving the kinematic distance ambiguity problem and obtaining reliable measurements for 97.94% of the sample. Statistical analysis reveals that 65.3% of clumps are gravitationally bound, accounting for approximately 96.3% of the statistical total mass. Scaling relation analysis across multiple surveys reveals universal power-law behaviors in clump populations. Maser-associated clumps exhibit modified parameter distributions and scaling relations, revealing how active star formation alters clump dynamics and structure. These extensive catalogs establish a foundation for investigating molecular clump properties, star formation processes, and Galactic evolution. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_01955 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Investigations of MWISP Clumps: 13CO Clump Source Catalog and Physical Properties Jiang, Yu Yan, Qing-Zeng Yang, Ji Zheng, Sheng Chen, Xuepeng Su, Yang Jiang, Zhibo Chen, Zhiwei Zhou, Xin Huang, Yao Luo, Xiaoyu Feng, Haoran Liu, De-Jian Astrophysics of Galaxies We present the first comprehensive catalogs of $^{13}$CO clumps from the Milky Way Imaging Scroll Painting (MWISP) project. By developing an equivalent global detection scheme integrated with the FacetClumps algorithm, we successfully extract 71,661 molecular clumps across a high-resolution $^{13}$CO data cube spanning 2310 deg$^2$ from the MWISP Phase I survey. To determine accurate distances, we design an automatic hierarchical distance decision method using signal regions as fundamental objects, effectively resolving the kinematic distance ambiguity problem and obtaining reliable measurements for 97.94% of the sample. Statistical analysis reveals that 65.3% of clumps are gravitationally bound, accounting for approximately 96.3% of the statistical total mass. Scaling relation analysis across multiple surveys reveals universal power-law behaviors in clump populations. Maser-associated clumps exhibit modified parameter distributions and scaling relations, revealing how active star formation alters clump dynamics and structure. These extensive catalogs establish a foundation for investigating molecular clump properties, star formation processes, and Galactic evolution. |
| title | Investigations of MWISP Clumps: 13CO Clump Source Catalog and Physical Properties |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2509.01955 |