Extended Data Fig. 5: Comparison in the Hertzsprung Russell Diagram (HRD) with single-star evolution models.
From: Discovery of a transitional type of evolved massive star with a hard ionizing flux
The positions of the discovered WN/WO stars (yellow) and the three other WN2 stars (blue) are compared to GENEC models with an LMC-like metallicity (left panel, Eggenberger et al. 2021 as well as earlier tracks from Meynet et al. (1994) with enhanced mass loss often employed in Starburst99 population synthesis models (right panel). Error bars for the observed WR stars are derived from acceptable spectral reproduction within a sample of at least 100 star-specific models.
