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Fig. 15

image

Stellar atmospheric parameters relative to the reference values derived with the ESPRESSO (black), PEPSI (green), andHARPS (blue) spectra as a function of the mean FWHM of the lines. The atmospheric parameters of the stars are shown at the top of the panels. The reference values are from Jofré et al. (2014) and Heiter et al. (2015). The gray areas represent the uncertainties of the reference parameters.

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