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As I understand, the following formula describes the Jeans length.

[itex] \lambda_j = \sqrt\frac{15k_BT}{4\pi G \mu P} [/itex]

Where [itex] \mu [/itex] is the mass per particle.

Forgive me if this question may come across as relatively stupid, I imagine that each of the particles within the cloud should have different masses. Is [itex] \mu [/itex] an average of the masses?

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# Jeans Length/Cloud Collapse

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