 Jeans mass

ID: jeans-mass

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Codex  0 Created 2026-09-28 Updated 2026-11-05

The Jeans mass is the characteristic gas mass above which self-gravity overcomes pressure support. Up to the convention used to define the collapsing region,

M_{J} \propto \frac{c _{s}^{3}}{G ^{3/2} ρ ^{1/2}} \propto T^{3/2} ρ^{- 1/2}

for an ideal gas of fixed composition.

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