\begin{table}
   \caption{\label{t:s_calib}Calibration of $S$ index on the Mount Wilson system.}
     %\centerline
{
             \begin{tabular}{ccccl}
         \hline\hline
         \noalign{\smallskip}
  Object   & $S_{\rm FEROS}$   &  $S_{\rm lit}$ &  Run  & Remarks \\
         \noalign{\smallskip}
         \hline
         \noalign{\smallskip}
\object{HIP~10175A}   & 0.2012   &    0.218 & 1 & 1 \\
\object{HIP~10175B}   & 0.2478   &    0.282 & 1 & 1 \\
\object{HIP~20552}    & 0.1479   &    0.189 & 2 & 2 \\
\object{HIP~45734}    & 0.2617   &    0.311 & 2 & 3 \\
\object{HIP~62596A}   & 0.1741   &    0.211 & 2 & 1 \\
\object{HIP~62596B}   & 0.1495   &    0.185 & 2 & 1 \\
\object{HIP~65176A}   & 0.1174   &    0.178~$^{{a}}$ & 2 & 3 \\
\object{HIP~65176B}   & 0.1497   &    0.178~$^{{a}}$ & 2 & 3 \\
\object{HIP~65352A}   & 0.1406   &    0.180 & 2 & 1 \\
\object{HIP~65352B}   & 0.1998   &    0.194 & 2 & 1 \\
\object{HIP~74432}    & 0.1321   &    0.145 & 2 & 1 \\
\object{HIP~78416A}   & 0.2322   &    0.313~$^{{a}}$ & 1 & 3 \\
\object{HIP~78416B}   & 0.3255   &    0.313~$^{{a}}$ & 1 & 3 \\
\object{HIP~84405A}   & 0.3580   &    0.375 & 1 & 4 \\
\object{HIP~84405B}   & 0.3531   &    0.384 & 1 & 4 \\
\object{HIP~103438A}  & 0.2108   &    0.348~$^{{a}}$ & 1 & 3 \\
\object{HIP~103438B}  & 0.3990   &    0.348~$^{{a}}$ & 1 & 3 \\
\object{HIP~114914A}  & 0.1187   &    0.158 & 1 & 1 \\
\object{HIP~114914B}  & 0.1723   &    0.204 & 1 & 1 \\
             &          &          &   &  \\
\object{HD~38392}     & 0.4551   &    0.533 & 2 & 1 \\
\object{HD~45067}     & 0.1048   &    0.141 & 2 & 4 \\
\object{HD~76151}     & 0.1883   &    0.246 & 2 & 4 \\
\object{HD~115617}    & 0.1268   &    0.162 & 2 & 1, 4 \\
\object{HD~152391}    & 0.3786   &    0.393 & 2 & 1, 4 \\
        \noalign{\smallskip}
         \hline
      \end{tabular}}
 \smallskip
References: 1.~Wright et~al.~(\cite{wright});
            2.~Tinney et~al.~(\cite{tinney02});
            3.~Henry et~al.~(\cite{henry96});
            4.~Baliunas et~al.~(\cite{baliunas95}). 
 $^{{a}}$  A+B.
\end{table}