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Fig. E.26
The temperature of VFTS 457 (O3.5 If*/WN7) is based on the lines N iii λ4634/4640, N iv λ4058, and N v λ4604/4620. Ṁ is based on He ii λ4686 and Hα. The best fitting model Ṁ is slightly too high. The star suggests an unusually high N abundance. The quality of the fit is not good, but can be easily improved (see Fig. E.27).
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