Helium and Nitrogen Enrichment in Massive Main Sequence Stars: Mechanisms and Implications for the Origin of WNL Stars

Arpita Roy, Ralph S Sutherland, Mark R Krumholz +2

The evolutionary paths taken by massive stars with $M\gtrsim 60{\mathrm{M}}_{\odot }$ remain substantially uncertain. They begin their lives as main sequence (MS) O-stars. Dependin…