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Table 1

Parameter space of the PHOENIX grid of model spectra used for fitting the observations.

Variable Range Step size

Teff [K] 23007000 100
700012 000 200
12 00015 000 500
log g 0.0+6.0 0.5
[ Fe / H ] 4.0–2.0 1.0
2.0+1.0 0.5
[ α / Fe ] 0.2+1.2 0.2

Notes. For −3.0 < [ Fe / H ] < 0.0, the available alpha element abundance are limited to [ α / Fe ] ∈ [ −0.4,0.0, + 0.4, + 1.2 ] and for those remaining the effective temperature Teff is restricted to 35007000 K.

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