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Table 1

Initial parameter space of the synthetic spectra.

Parameter Range Step
Teff (K) 3500 ≤ Teff ≤ 7800 100
log g (dex) 0.5 ≤ log g ≤ 5.0 0.5
[Fe/ H] (dex) − 7. 0 ≤ [Fe/ H] ≤ 0.5 0.5
[C/ Fe] (dex) −1.5 ≤ [C/Fe] ≤ 6.0 0.5

Notes. The metallicity and carbon enhancement combinations are restricted to physically meaningful combinations (see Fig. 2).

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