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Fig. 3


Region of the Hα (left), Hβ (middle), and Hγ (right) lines for HD 144277: observed spectra (solid black line), synthetic spectra with the final adopted stellar parameters (Teff = 8640 K, log g = 4.14; solid red line) and synthetic spectra using the Teff and log g values derived from fitting the spectral regions excluding the Balmer lines (i.e., Teff = 9035 K, log g = 4.29; dashed blue lines). The lower panels show the differences (in %) between observed and synthetic spectra for the three Balmer line regions.

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