\begin{table}%t1
\caption{\label{stardata}Photometric data for V39. \citet{udalski01}, \citet{pietr06} and \citet{garcia09} give mean values.}
%\centering
\par
\begin{tabular}{cccccccl}
\hline \hline \noalign{\smallskip}
 $U$ & $B$ & $V$ & $R$ & $I$ & $J$ & $K$ & Ref. \\
 \hline
            & 18.6--19.9 &                   &           &                     &      &   & \cite{sandage71}\\
           &                   &  18.851      &            & 17.617         &   &   & \citet{udalski01}\\
           &                   & 18.5--19.0 &            & 17.45--17.7 &   &   & \citet{mantegazza02}\\
           &                   &                   &            &                     & 16.815 & 15.818 & \citet{pietr06}\\
19.43  & 19.62         & 19.00         &  18.37 & 17.75           &     &   & \citet{garcia09}\\
\hline
\end{tabular}
\end{table}