\begin{table}%t1
\caption{\label{tab:para}Parameters of RS~Cha.}
\small%\centerline
{
\begin{tabular}{lccc}
\hline\hline
Parameter    &     Primary  & Secondary & References$^{{a}}$\\
\hline
$M/{M}_\odot$ & 1.89 $\pm$ 0.01 & 1.87 $\pm$ 0.01 & [1]   \\
$R/{R}_\odot$ & 2.15 $\pm$ 0.06 & 1.87 $\pm$ 0.01 & [1]   \\
$T_{\rm eff}~[{\rm K}]$ & 7638 $\pm$ 76 & 7228 $\pm$ 72 & [2]   \\
$\log(L/{L}_\odot)$ & 1.15 $\pm$ 0.09 & 1.13 $\pm$ 0.09 & $L = 4\pi~R^{2}\sigma~T_{\rm eff}^{4}$    \\
$\log(g)~[{\rm cm~s^{-2}}]$ & 4.05 $\pm$ 0.06& 3.96 $\pm$ 0.06 & $g = M{\rm G}/R^{2}$    \\
$v \sin i~[{\rm km~s^{-1}}]$ & 64 $\pm$ 6& 70 $\pm$ 6 & [1]    \\
$P_{\rm orb}~[{\rm d}]$ & \multicolumn{2}{c}{1.67} 	 & [1]\\
$i~[{\rm \deg}]$ 	&  \multicolumn{2}{c}{83.4 $\pm$  0.3} & [3]\\
${\rm [Fe/H]}$ & \multicolumn{2}{c}{0.17 $\pm$ 0.01} & [1]\\
\hline
\end{tabular}}
\smallskip
$^{{a}}$~References:  [1]   \citet{alecian2005}; 
 [2]  \citet{ribas};  [3]~\citet{clausen}.
\end{table}