Catalog of High-velocity Dispersion Compact Clouds in the Central Molecular Zone of Our Galaxy

Tomoharu Oka, Asaka Uruno, Rei Enokiya, Taichi Nakamura, Yuto Yamasaki, Yuto Watanabe, Sekito Tokuyama, Yuhei Iwata

Research output: Contribution to journalArticlepeer-review

Abstract

This study developed an automated identification procedure for compact clouds with broad velocity widths in the spectral-line data cubes of highly crowded regions. The procedure was applied to the CO J = 3 - 2 line data, obtained using the James Clerk Maxwell Telescope, to identify 184 high-velocity dispersion compact clouds (HVDCCs), which are a category of peculiar molecular clouds found in the central molecular zone of our Galaxy. A list of HVDCCs in the area -1.°4 ≤ l ≤ +2.°0, -0.°25 ≤ b ≤ +0.°25 was presented with their physical parameters, CO J = 3 - 2/J = 1 - 0 intensity ratios, and morphological classifications. Consequently, the list provides several intriguing sources that may have been driven by encounters with pointlike massive objects, local energetic events, or cloud-to-cloud collisions.

Original languageEnglish
Article number13
JournalAstrophysical Journal, Supplement Series
Volume261
Issue number2
DOIs
Publication statusPublished - 2022 Aug 1

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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