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Fig. 2


Wavelength region around the solar C I line at 5380.3 Å. Dots indicate one of the PEPSI deep spectra and the dark blue and bright red line is the IAG FTS atlas from Reiners et al. (2016) and the HARPS spectrum from Molaro et al. (2013), respectively. The zoom shows the Fe I 5379.6-Å line. The FTS atlas has a spectral resolution of ≈670 000, the HARPS spectrum 115 000.

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