A compilation of 237 disc galaxies shows little evolution in gas velocity dispersion from z~1.5 to z~8, with ionized gas dispersions about 2 times higher than molecular gas at fixed gas mass.
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Evolution of Gas Velocity Dispersion in Discs from $z\sim8$ to $z\sim0.5$
A compilation of 237 disc galaxies shows little evolution in gas velocity dispersion from z~1.5 to z~8, with ionized gas dispersions about 2 times higher than molecular gas at fixed gas mass.