Molecular Clouds in the Outer Milky Way Disk: Sample, Integrated Properties, and Radial Trends with Galactocentric Radius

• Published in: The Astrophysical journal. Supplement series Vol. 275; no. 2; pp. 35 - 56
• Main Authors: Sun, Yan, Yang, Ji, Yan, Qing-Zeng, Zhang, Shaobo, Su, Yang, Chen, Xuepeng, Zhou, Xin, Ma, Yuehui, Yuan, Lixia
• Format: Journal Article
• Language: English
• Published: Saskatoon The American Astronomical Society 01.12.2024; IOP Publishing
• Subjects: Algorithms; Cloud properties; CO line emission; Exponential functions; Galactic evolution; Galaxies; Interstellar line emission; Milky Way; Milky Way disk; Milky Way Galaxy; Molecular clouds; Scaling; Spectra

We present a catalog of 32,162 12 CO molecular clouds that covers the northern outer Galactic plane ( l = [15°, 165°] and l = [195°, 230°], and b = [−5.°25, +5.°25]). The catalog was produced using a DBSCAN algorithm applied to the Milky Way Imaging Scroll Painting project data. We systematically an...