Synthetic spectrum of a TO star in 47 Tuc (00006129, T_eff = 5851 K, log g = 4.06) showing Hα line region used for the effective temperature determination. Blue bar above the synthetic spectrum indicates the range were fitting of the Hα line wings was done, red dashed rectangles mark the regions excluded from the fitting procedure, while green dashed rectangles highlight the spectral regions used to determine continuum level.