\begin{table}%t6
\par
\caption {\label{tab:optthinparms}Ionized mass estimates for the optically-thin stellar nebulae
 around the YHGs (top panel) and RSGs (bottom panel) in Wd~1.}
%\centerline
 {\begin{tabular}{llllllll}
\hline\hline
\noalign{\smallskip}
 ID  & $S_{8.6}$ & Maj & ${{\rm Min}\over{\rm Major}}$ &  Vol &   $E_V$ &  $n_{\rm e}$ &   Mass \\
     &  & & &          $10^{50}$& $10^{58}$&  $10^3$  &  $10^{-3}$\\
     & (mJy)  & (\arcsec) && (cm$^3$) &  (cm$^{-3}$) & (cm$^{-3}$) & ($M_\odot$) \\
\hline
 4   &  2.2 & 2.45 &0.49 &   4.0&   1.3&  5.7&   2.9\\
 12a &  2.9 & 1.82 &0.92 &   5.7&   1.7&  5.5&   3.9\\
  265 &  2.3 & 2.86 &0.54 &   7.7&   1.4&  4.2&   4.1\\\hline
  20  & 15.6  &13.79 & 0.48 & 677.9 & 9.2 & 1.2 & 99.6 \\
  26  & 173.4 &15.0  &0.33 & 412.4& 102.2 &  5.0& 259.0\\
 237    &  5.6 &11.19 &0.76 & 908.0&   3.3&  0.6&  69.1\\
\hline 
\end{tabular}}
\tablefoot{A distance of 4~kpc is assumed.}
\end{table}