\begin{table}%t4
\caption{\label{tab4}Properties of clusters younger than $\log (t_{\rm c})$~= 7.50 in the Antennae from Bastian et~al. (\cite{bastian:09}).}
%\centering
\small
\begin{tabular}{l|*{6}{c}}
\hline\hline %\noalign{\smallskip}
&&&&&\\[-3mm]
Identifier &   $\log (\rm age)$ [Myr]   &  Radius [pc]  & $\log (\rm mass)$ [\Msun]& $\log (\rho)$ [\Msun/pc$^{-3}$] \\
\hline
T54   &   6.9 $\pm$  0.1 &  3.7  &  4.8 $\pm$ 0.3 & 2.49 & \\
T 270 & $<$6.8          &  9.3  &  5.4 $\pm$ 0.3 & 1.89 & \\
T 324 & 6.5--6.8        &  7.7  &  5.2 $\pm$ 0.3 & 2.54 & \\
T 343 & 6.5--6.8        &  8.8  &  5.4 $\pm$ 0.3 & 1.96 & \\
T 365 & 6.5--6.8        &  4.3  &  5.3 $\pm$ 0.3 & 2.80 & \\
T 367 & 6.5--6.8         &  6.6  &  5.2 $\pm$ 0.3 & 2.14 & \\
\hline
\end{tabular}
\end{table}