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Fig. 5

image

Top panels: comparison between effective temperatures of the literature and of the calibration stars. Dark circles are the stars from Ghezzi et al. (2010a,b), blue circles are the stars from Porto de Mello et al. (2014), and red circles are the stars from all other sources listed in Table A.1. The dotted lines and the shaded areas are the trends and the 1σ dispersion around them, respectively; the equations are shown along with the errors of their coefficients in brackets. Bottom panels: same as in the top panels, but for corrected by = ( +  410)∕1.08 − 153[Fe/H] + 22. The vertical bar represents the mean uncertainties of the spectroscopic and photometric temperatures added: 40 + 73 K.

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