A six-year radial-velocity and light-curve survey finds that field OBe binaries in the SMC Wing are eccentric while OB binaries are circular, supporting a binary supernova origin for OBe stars.
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New Field OB and OBe Binaries of the SMC Wing: Observational Properties and Population Modeling
A six-year radial-velocity and light-curve survey finds that field OBe binaries in the SMC Wing are eccentric while OB binaries are circular, supporting a binary supernova origin for OBe stars.