\begin{table}%t1 \caption{\label{parameters}Adopted atmospheric parameters for the analysed stars.} %\centerline { \begin{tabular}{cccccccc} \hline \hline Star & \Teff & \logg & \vmic & \errvmic & \vsini & \errvsini & \vr \\ Name & [K] & [cgs] & [\kms] & [\kms] & [\kms] & [\kms] & [\kms] \\ \hline 21~Peg & 10400 & 3.55 & 0.5 & 0.4 & 3.76 & 0.35 & 0.5 \\ HD~145788 & 9750 & 3.70 & 1.3 & 0.2 & 10.0 & 0.5 & $-$13.9 \\ $\pi$~Cet & 12800 & 3.75 & 1.0 & 0.5 & 20.2 & 0.9 & 12.5 \\ \hline \end{tabular}} \smallskip \par The uncertainties on \Teff, \logg, and \vr\ are 200~K, 0.1~dex, and 0.5~\kms, respectively. \end{table}