Investigations of MWISP Clumps: 13CO Clump Source Catalog and Physical Properties

作者：Yu Jiang, QING-ZENG YAN, Ji Yang, Sheng Zheng, Xuepeng Chen, Yang Su, Zhibo Jiang, Zhiwei Chen, Xin Zhou, Yao Huang, Xiaoyu Luo, Haoran Feng, Dejian Liu · 发表于：The Astrophysical Journal Supplement Series · 年份：2025 · DOI：10.3847/1538-4365/ae00b9 · 被引用次数：2 · 研究领域：Astrophysics and Star Formation Studies、Particle accelerators and beam dynamics、Spacecraft and Cryogenic Technologies

Abstract 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.