\begin{table}%T1
\par
\caption{\label{table1}General properties of the studied objects and sources of the 
UV data.}
\small%\centerline
{
\begin{tabular}{lllccc}
\hline\hline
 & \multicolumn{3}{c} {Central star$^{a,b}$} &  Diam.$^{c}$ &Log total \\
\cline{2-4}
\rule[-0.5ex]{0pt}{3ex} Object (PN G) & $m_V$ & Spec. type & 
$T_*$(kK) &   ($''$)&  
$I(\rm H\beta)^{(2)}$ \\
 \hline  
 PB~8 (292.4+04.1)   & 13.8  & [WC~5$-$6] & 58 &   5~  
& $-$11.41 \\
 NGC~2867 (278.1$-$05.9) & 15.7 & [WO~2] & 155 & 14~ & 
$-$10.58 \\
 PB~6 (278.8+4.9)    & 17.6 & [WO~1] & 158  & 11~ & $-$11.87  \\
 \hline
\end{tabular}}
\smallskip
$^{a}$  Stellar magnitude and stellar type temperature as given by \citet{ackerneiner03}.\\
$^{b}$  Temperature from Todt et al. (in preparation).\\
$^{c}$  Nebular diameter and total H$\beta$ flux from \citet{ackeretal92}.
\end{table}