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The Formation of a 70 M<sub>โ</sub> Black Hole at High Metallicity
Abstract A 70 <?CDATA ${M}_{\odot }$?> black hole (BH) was discovered in the Milky Way disk in a long-period detached binary system (LB-1) with a high-metallicity 8 <?CDATA ${M}_{\odot }$?> B star companion. Current consensus on the formation of BHs from high-metallicity stars limits the BH mass to be below โฆ