Fig. 2

Hα red wing profiles in the wavelength range significant for the fit. In each panel, red profiles (upper ones) are for Teff = 5400 K, black profiles (middle ones) are for Teff = 6000 K, and blue profiles (lower) for Teff = 6600 K. For each temperature, dashed profiles are for log g = 3.5, solid profiles for log g = 4.0, and dotted profiles are for log g = 4.5. All profiles assume [Fe/H] = −3. Upper panel shows profiles for BA temperatures, lower panel for ALI temperatures.
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