Fig. 4

Emergent spectra for pure iron (red, dotted line), solar ratio of H/He with metallicity Z = 1 Z⊙ (black solid lines) and Z = 40 Z⊙ (blue dashed line) for luminosities ℓ = 0.01, 0.10.5 and 1.0 computed with log g = 14.0. For clarity models corresponding to luminosity of ℓ = 1.0 are shifted along the ordinate axis by a factor of 10.
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