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Fig. 11.
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O giant (AV186, O8.5III). The best fitting model is for T = 33 kK and log g = 3.4. Note that while a ten times higher mass star with log g = 4.4 would be indistinguishable in the UV, it would completely fail to reproduce the optical Balmer wings. The model was computed with the PoWR (Sander et al. 2017) NLTE code.
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