Analysis of 3161 molecular clouds reveals oblate shapes aligned with the galactic plane, a flatter velocity dispersion-size relation than Larson's law, strong mass-size correlation, and that 12CO traces diffuse turbulent gas while C18O traces gravity-dominated regions.
Optimization of Moment Masking for CO Spectral Line Surveys
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abstract
We describe and refine the masked moment method used to suppress noise in Galactic and extragalactic spectral line surveys. By applying the refined technique to an essentially noise-free CO molecular cloud survey with Gaussian noise added, we determine the optimum masking parameters for typical CO surveys such as those presented in Dame et al. (2001, ApJ, 547, 792)
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Statistical Properties of Molecular Clouds in the Milky Way: Insights from Three-Isotopologue CO Observations of the MWISP Project
Analysis of 3161 molecular clouds reveals oblate shapes aligned with the galactic plane, a flatter velocity dispersion-size relation than Larson's law, strong mass-size correlation, and that 12CO traces diffuse turbulent gas while C18O traces gravity-dominated regions.