How does cooling affect the Jeans Mass ($M_J$) relationship within a molecular cloud?

Answer

If the cloud cools down, its Jeans Mass drops dramatically.

The Jeans Mass is inversely related to temperature; therefore, a reduction in temperature lowers the critical mass threshold, making it easier for the existing mass to exceed $M_J$ and trigger collapse.

How does cooling affect the Jeans Mass ($M_J$) relationship within a molecular cloud?
physicsweatheratmospherecloudmeteorology