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Helium and nitrogen enrichment in massive main-sequence stars: mechanisms and implications for the origin of WNL stars

Roy, Arpita; Sutherland, Ralph; Krumholz, Mark; Heger, Alexander; Dopita, Michael


The evolutionary paths taken by massive stars with M 60 M remain substantially uncertain. They begin their lives as main-sequence (MS) O stars. Depending on their masses, rotation rates, and metallicities, they can then encounter a wide range of evolutionary states with an equally broad set of possible surface compositions and spectral classifications. We present a new grid of calculations for the evolution of such stars that covers a broad range in mass, M/M = 60-150, rotation rate, v/vcrit...[Show more]

CollectionsANU Research Publications
Date published: 2020
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/staa781
Access Rights: Open Access


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