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Table A.1

Range of parameters for the best-fitting models for the stars from Group A.

T eff log(g) C/O [Fe/H]

Name Range Best Wei Min Max Best Wei Min Max Best Wei Min Max Best Wei Min Max

Cl* NGC 121 T V8 V 4000 3900 3800 4000 0.0 0.0 0.0 0.0 1.40 1.34 1.05 2.00 –0.5 –0.5 –0.5 –0.5
(Fig. A.1) N 4000 3857 3600 4000 0.0 0.6 0.0 2.0 1.40 1.12 1.01 1.40 –0.5 –0.4 –0.5 0.0

SHV 0517337-725738 V 3600 3632 3500 3800 0.0 0.3 0.0 2.0 1.10 1.17 1.05 1.40 –0.5 –0.4 –0.5 0.0
(Fig. A.2) N 4000 3861 3700 4000 0.0 0.0 0.0 0.0 1.40 1.22 1.10 1.40 –0.5 –0.5 –0.5 –0.5

SHV 0518161-683543 V 3600 3649 3600 3700 0.0 0.0 0.0 0.0 1.40 1.47 1.10 2.00 –0.5 –0.5 –0.5 –0.5
(Fig. A.3) N 3600 3662 3500 3900 0.0 0.2 0.0 2.0 1.05 1.11 1.01 1.40 –0.5 –0.4 –0.5 0.0

Notes. The column “Range” indicates the wavelength range used for the fitting: V = visible, N = near-infrared. The columns “Best” indicate the parameters of the best-fitting model. The columns “Wei” indicate the weighted values for each parameter as calculated in Eq. (3). The columns “Min” and “Max” give the range of values for each parameter.

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