Cloud virial parameters rise by about a factor of 2 from 4 to 15 kpc, fitting a pressure-bounded equilibrium model dominated by nearby stars, with star formation proceeding in small cores (mass fraction ~1e-3) rather than global collapse.
# were analyzed in rings of width 1 kpc over ๐ $%&=4โ14 kpc. The virial parameter increases with ๐ $%& by a factor ~2 in each survey. 2. The increasing trends of ๐ผ!
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Gravitational Binding and Star Formation in Molecular Clouds of the Milky Way
Cloud virial parameters rise by about a factor of 2 from 4 to 15 kpc, fitting a pressure-bounded equilibrium model dominated by nearby stars, with star formation proceeding in small cores (mass fraction ~1e-3) rather than global collapse.