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A vampire star is any star that "sucks" matter from a close neighbouring star.

Typically, it will be a close binary pair, where a white dwarf draws matter off of it's neighbour - normally a red giant - and accretes the matter onto it's surface. This continues until a critical mass is achieved - the Chandrasekhar limit - whereupon the white dwarf explodes as a type Ia supernova.

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12y ago

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