\begin{table}%t2
  \caption{Photometric measurements of RY~Tau. The data of different measurements are averaged and     the standard deviation is determined. For convience, all fluxes are given     in Jansky and in magnitude. Conversion factors are taken from Leinert~(\cite{leinertI}).}      
  \label{table:photometrie}
  %\centerline
{
  \begin{tabular}{llr}\hline\hline
    Wavelength [${\rm \mu m}$] & Flux [Jy] ([mag]) & Reference \\ \hline
    $0.36$ (\textit{U}) & $0.04 \pm 0.01$ ($11.72 \pm 0.16$) &   1 \\
    $0.45$ (\textit{B}) & $0.14 \pm 0.01$ ($11.23 \pm 0.08$) &   1 \\
    $0.55$ (\textit{V}) & $0.33 \pm 0.01$ ($10.12 \pm 0.04$) &    1 \\
    $0.64$ (\textit{R}$_{\rm C}$) & $0.59 \pm 0.03$ ($9.3 \pm 0.05$) &   1 \\
    $0.79$ (\textit{I}$_{\rm C}$) & $1.0 \pm 0.06$ ($8.52 \pm 0.06$) &   1 \\
    $1.25$ (\textit{J}) & $1.6 \pm 0.8$ ($7.64 \pm 0.40$) &   2,   3  \\
    $1.65$ (\textit{H}) & $2.3 \pm 0.9$ ($6.48 \pm 0.30$) &   2,   3  \\
    $2.20$ (\textit{K}) & $3.8 \pm 0.5$ ($5.56 \pm 0.13$) &   2,   3  \\ 
    $4.80$ (\textit{M}) & $6.6 \pm 2.0$ ($3.4 \pm 0.28$) &   4,   5  \\
    $11.0$ (\textit{N}) & $20.0 \pm 0.3$ &   6  \\
    $25$ & $28 \pm 3$ &   7  \\
    $60$ & $18 \pm 4$ &   7  \\
    $100$ & $12 \pm 5$ &   7,   8  \\
    $1300$ & $0.23 \pm 0.02$ &   9  \\ \hline
  \end{tabular}}\medskip
  References --  1: Calvet et~al. (\cite{calvet}); 2: Gezari-Catalog (Gezari et~al. \cite{gezari}); 3: 2~MASS-Catalog (Cutri et~al. \cite{cutri}); 4: Rydgren et~al. (\cite{rydgren}); 5: Elias (\cite{elias}); 
     6: Hanner et~al. (\cite{hanner}); 7: Strom et~al. (\cite{strom});  8: Harvey et~al. (\cite{harvey}); 9: 
    Mora et~al. (\cite{mora}).
\end{table}