What factor ultimately determines whether a collapsed stellar core becomes a neutron star or a black hole?

Answer

The total mass that remains after the explosion and preceding mass loss phases.

The final remnant type is dictated by the core mass remaining after all preceding mass loss and the supernova explosion; if this mass exceeds the maximum stability limit for a neutron star, the object collapses further into a black hole.

What factor ultimately determines whether a collapsed stellar core becomes a neutron star or a black hole?
starradiationmassevidencestellar wind