Astronomy & Astrophysics

Table 2: Model parameters.
Table 3: Fe and Mg chemical abundances.
Table 4: Ca, Ti and Cr chemical abundances. Ti II abundances are derived only in 3 stars.
Table 5: Dependence of abundances on model parameters.
Table 6: Standard deviations for the results of the Monte Carlo test.
Table 1: Equivalent widths (mÅ) for program stars.