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.
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PRFM-vol and PRFM-int subgrid models, calibrated from TIGRESS, produce shorter gas depletion times than IllustrisTNG and match TIGRESS star formation rates at high resolution while remaining robust at lower resolutions.
Broad HCO+ absorption traces diffuse CO-dark H2 with f_mol=0.09, f_CNM=0.38, and CO abundance ≲10^{-5} relative to H2, undetected in CO emission or absorption below few×10^{19} cm^{-2}.
citing papers explorer
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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.
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Pressure-regulated feedback-modulated star formation as a subgrid model for galaxy formation simulations
PRFM-vol and PRFM-int subgrid models, calibrated from TIGRESS, produce shorter gas depletion times than IllustrisTNG and match TIGRESS star formation rates at high resolution while remaining robust at lower resolutions.
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CO-dark molecular gas traced by HCO$^+$ in the diffuse interstellar medium
Broad HCO+ absorption traces diffuse CO-dark H2 with f_mol=0.09, f_CNM=0.38, and CO abundance ≲10^{-5} relative to H2, undetected in CO emission or absorption below few×10^{19} cm^{-2}.