Cmzoom. Ii. Catalog Of Compact Submillimeter Dust Continuum Sources In The Milky Way'S Central Molecular Zone

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES(2020)

引用 22|浏览60
暂无评分
摘要
In this paper we present the CMZoom survey's catalog of compact sources (<10 '', similar to 0.4 pc) within the central molecular zone (CMZ). CMZoom is a Submillimeter Array large program designed to provide a complete and unbiased map of all high column density gas (N(H-2) >= 10(23) cm(-2)) of the innermost 500 pc of the Galaxy in the 1.3 mm dust continuum. We generate both a robust catalog designed to reduce spurious source detections, and a second catalog with higher completeness, both generated using a pruned dendrogram. In the robust catalog, we report 285 compact sources, or 816 in the high-completeness catalog. These sources have effective radii between 0.04 and 0.4 pc, and are the potential progenitors of star clusters. The masses for both catalogs are dominated by the Sagittarius B2 cloud complex, where masses are likely unreliable due to free-free contamination, uncertain dust temperatures, and line-of-sight confusion. Given the survey selection and completeness, we predict that our robust catalog accounts for more than similar to 99% of compact substructure capable of forming high-mass stars in the CMZ. This catalog provides a crucial foundation for future studies of high-mass star formation in the Galactic Center.
更多
查看译文
关键词
Star formation, Galactic center, Submillimeter astronomy, Star-forming regions, Dense interstellar clouds, Infrared dark clouds, Protostars, Molecular clouds, Interferometry, Catalogs
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要