Fig. 8.
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Degeneracy between Teff and metallicity for HDE 250290. Top panel: fit of the observed spectrum (grey) with a template (blue curve) corresponding closely to the parameters of Simón-Díaz et al. (2017, Teff = 16 000 K, log g = 2.5 dex, [M/H] = 0.0 dex, and line-broadening velocity vbroad = 50 km s−1). Bottom panel: fit with the template (red curve) as determined by ReDetermineApHotStars (Teff = 6750 K, log g = 2.5 dex, [M/H] = −5.0 dex, and vbroad = 80 km s−1).
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