Metallicity dependence of Wolf-Rayet binaries using detailed binary models: An absence of long-period systems at low metallicity

Max M. Briel, Eirini Kasdagli, Tassos Fragos +6

Observations of Wolf-Rayet (WR) stars in binaries in the SMC and LMC suggest a preference for short period ($P\lesssim 30$ days) orbits, with an apparent absence of WRs in long-peri…