\begin{table}%t1 \caption{\label{par}Atmospheric parameters (effective temperature, logarithm of the gravity, microturbulent velocity, and projected rotational velocity).} \par %\centering \par \begin{tabular}{ccccc} \hline \hline \noalign{\smallskip} & $T_{\rm eff}$ (K) & $\log g$ & $\xi$ (km s$^{-1}$) & $v \sin i$ (km s$^{-1}$) \\ \hline \object{HD~11753} & 10~612 $\pm$ 200 & 3.79 $\pm$ 0.10 & 0.5 $\pm$ 0.5 & 14 $\pm$ 0.5\\ \object{HD~53244} & 13~600 $\pm$ 200 & 3.40 $\pm$ 0.03 & 2.0 $\pm$ 0.5 & 35 $\pm$ 0.5\\ \object{HD~221507} & 12~476 $\pm$ 200 & 4.13 $\pm$ 0.10 & 0.0 $\pm$ 0.5 & 25 $\pm$ 0.5\\ \hline \end{tabular} \tablefoot {Taken from Dolk et~al. (\cite{dolk2003}) for \object{HD~11753} and \object{HD~221507}, and from Woolf \& Lambert (\cite{woolf_lambert99}) for \object{HD~53244}.} \end{table}