Harvard Astronomy 201b

Answer to question (2)

In Uncategorized on March 28, 2013 at 7:02 am

“Inevitably when large enough” is the key.  One can indeed treat the supersonic motions as contributing an additional pressure, and raising the Jeans length—the problem is, they raise it above the typical size of a dense core!  Hence for dense cores to collapse, the turbulence must be dissipated so that the Jeans length goes down below the size of the core.

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