\begin{table}%t4
\par
  \caption{\label{Table:hptt}Some stellar parameters for HR 26, HR 4757 and HR 5422.}
 %\begin{center}
{\small  \begin{tabular}{lcccc}
    \hline\hline
Star      & $T_{\rm eff}$ (K)  &     $\log g_*$    &     Age (Myr)  & Tracks  \\
\hline
HR 26 A   &    11400           &   $4.14\pm 0.04$  &   $\rm 130^{-40}_{+47}$, $\rm 140^{-30}_{+64}$   &  1,2      \\
HR 26 B   &                    &                   &   $\rm 20^{+13}_{-8}$, $\rm 30^{+70}_{-8}$       &  1,2      \\
HR 4757 A &    10400           &   $4.05\pm 0.06$  &   $\rm 200^{-30}_{+40}$, $200\pm 30$         &  1,2      \\  
HR 4757 B &                    &                   &   $40_{-17}$, $90_{-50}$                 &  3,4      \\
HR 5422 A &    10040           &   $4.12\pm 0.02$  &   $\rm 240^{-30}_{+60}$, $\rm 240^{-20}_{+60}$   &  3,4      \\
HR 5422 B &                    &                   &   $50_{-20}$, $100_{-50}$                &  3,4      \\
\hline
HR 26 A   &    11400           &   $4.08\pm 0.05$  &   $\rm 175^{-23}_{+14}$   &   5			      \\
          &                    &                   &   $\rm 1.8^{+0.4}_{-0.2}$ &   6			      \\ 
HR 4757 A &    10400           &   $4.06\pm 0.05$  &   $\rm 260^{-24}_{+14}$   &   5			      \\
          &                    &                   &   $\rm 2.5^{+0.5}_{-0.2}$ &   6			      \\
HR 5422 A &    10250           &   $4.08\pm 0.06$  &   $\rm 267^{-39}_{+23}$   &   5			      \\
          &                    &                   &   $\rm 2.1^{+0.1}_{-0.4}$ &   6			      \\
\hline
\end{tabular}}
\par
 Notes to Table \ref{Table:hptt}: the results shown in the upper
part of the table are from Gerbaldi et~al. (\cite{Gerbaldi2001}), those in the lower part are
derived in this work. The tracks used for computing the ages are: $^1$~Schaller
et~al. (1993), $^2$~Girardi et~al. (\cite{Girardi2000}), $^3$~D'Antona \& Mazzitelli (1998), $^4$~Palla \& Stahler (\cite{Palla1999}), $^5$~Y$^2$ post-MS, $^6$~Y$^2$ PMS.
%\end{center}
\par
\end{table}