Single or binary origin of Wolf-Rayet stars? Which mode is dominant
Wolf-Rayet stars are the evolved descendants of massive OB stars, revealing the products of H or He burning at their surfaces. Their hydrogen envelopes are stripped away either through dense stellar winds of very high mass stars or via mass transfer to the initial secondary star in a close binary. This project will exploit the environment of Wolf-Rayet stars in the Milky Way, Magellanic Clouds and other nearby star forming galaxies to assess which of these mechanisms is dominant.