Fig. 3
H-R diagram showing the program stars (black squares) and the stars from Martins et al. (2008) for comparison. Blue triangles are “normal” O4-6 supergiants, green squares are “extreme” O4-6If+ stars, pink diamonds are WN7-9h objects. Evolutionary tracks and isochrones are from Meynet & Maeder (2003) with an initial rotation of 300 km s-1.
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