The formation of Wolf-Rayet stars in the SMC is not dominated by mass transfer

Shenar, Tomer; Hainich, R.; Todt, H.; Sander, A.; Hamann, W.-R.; Moffat, A.; Eldridge, J. J.; Pablo, H.; Oskinova, L.; Richardson, N.

We analyzed spectra of all Wolf-Rayet stars in the Small Magellanic Cloud (SMC). We find that, unlike predicted, mass-transfer in binaries is not needed to explain their formation.

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