\begin{table}%t2
%\centering
\par
\caption{\label{sources}Real star clusters.}
\begin{tabular}{lclc}\hline\hline
Name &  Members& Sources&$\bar{s}$ \\
 \hline
CN~138& 85 & Watson (\cite{watso2009n}) &0.84\\
RCW 120& 65 & Deharveng (\cite{deharveng2009}) &0.67\\
W5& 2053 & Koenig (\cite{koenig2008})&n/a\\ \hline
\end{tabular}
\end{table}