What is the result if a collapsing core's mass is too low to achieve sustained core fusion temperatures?

Answer

A brown dwarf

If the accumulated mass is insufficient, the core will never reach the required temperature for sustained hydrogen fusion, resulting instead in the formation of a brown dwarf.

What is the result if a collapsing core's mass is too low to achieve sustained core fusion temperatures?
forcedensitygravitynebulaastrophysicsHeating