\begin{table}%t7
\caption{Two different effects are responsible for the
      destruction of circumstellar disks around O stars; the
      photo-evaporation process and the direct interaction between the
      wind and the disk. In the first 3 columns, the stellar
      parameters are given used in the calculation of the timescales
      \citep{Mokiem04,Lenorzer04}. In Col.~4, the gravitational
      radius is given. Beyond this radius matter is removed by
      photoevaporation, while inside of it, the stellar wind directly removes
      material from the disk. Cols.~5 and~6 give the typical
      timescales for these two processes. The formulae are taken from
      \citet{Hollenbach94,Hollenbach00}.\label{tab:diskdestruct}}
%\begin{tabular}{p{0.6cm}p{0.75cm}p{1.3cm}p{0.75cm}p{0.75cm}p{0.9cm}p{0.9cm}}\hline\hline
%\centering
\small\begin{tabular}{llllll} \hline \hline\\[-3mm]
\multicolumn{1}{c}{SpTp} &\multicolumn{1}{c}{ log~($Q{_{\rm 0}}$)} &   \multicolumn{1}{c}{log~(\mdot)}& \multicolumn{1}{c}{$r_{\rm g}$}     & \multicolumn{1}{c}{$t_{\rm p}$}  &  \multicolumn{1}{c}{$t_{\rm w}$} \\  
   &\multicolumn{1}{c}{ s$^{-1}$}     & \multicolumn{1}{c}{$M_{\odot}$~yr$^{-1}$} & \multicolumn{1}{c}{AU}    & \multicolumn{1}{c}{10$^{5}$~yr}   & \multicolumn{1}{c}{10$^{5}$~yr} \\ \hline
\noalign{\smallskip}
O3V &        49.69 &       $-$5.375 &              459.5 &        0.6 &        0.7\\
O4V &        49.50 &       $-$5.599 &              377.4 &        0.8 &        1.1\\
O5V &        49.31 &       $-$5.805 &              301.4 &        0.9 &        1.8\\
O5.5V &      49.08 &       $-$6.072 &              251.4 &        1.1 &        3.3\\
O6.5V &      48.82 &       $-$6.369 &              205.4 &        1.3 &        6.5\\
O7.5V &      48.51 &       $-$6.674 &              169.4 &        1.7 &        13.3\\
O9V &        48.06 &       $-$7.038 &              141.4 &        2.5 &        30.7\\
O9.5V &      47.79 &       $-$7.252 &              128.7 &        3.3 &        50.1\\
O9.7V &      47.52 &       $-$7.445 &              118.0 &        4.2 &        78.8\\
B1V &        46.92 &       $-$7.913 &               98.7 &        7.3 &        233.5\\\hline
\end{tabular}
\par
\end{table}