What is the approximate upper limit for a white dwarf's mass before mass transfer could trigger a supernova collapse?

Answer

The Chandrasekhar limit, about 1.4 solar masses

A star destined to be a white dwarf might receive mass from its neighbor, potentially pushing its total mass above the Chandrasekhar limit, which is about 1.4 solar masses, causing it to collapse into a supernova.

What is the approximate upper limit for a white dwarf's mass before mass transfer could trigger a supernova collapse?

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