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Fig. 2


Top: comparison between an observed high-resolution spectrum for the solar photosphere (black) and a Phoenix synthetic spectrum (red) from Husser et al. (2013) using Teff = 5770 K, log g = 4.5 and solar abundances. Bottom: same for the observed spectrum of a spot region (black), now compared with a Phoenix synthetic spectrum of Teff = 5460 K.

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