\begin{table}%t1
  \caption{\label{table:astro}Stellar data.}
  %\centerline
{\small 
  \begin{tabular}{lllllllll}
      \hline
      \hline
       Object          & $T_{\rm eff}$ & $\log(g)$  & $A_{\rm v}$          & $L_{\star}$       & $L_{\rm bol}$               & Spectral type       & Group & distance          \\  
                       & [K]           &            & [mag]                & [$L_{\odot}$]     & [$L_{\odot}$]               &                     &       & [pc]              \\
      \hline
      IRAS 06084 VLA1  & --             & --          & $\ge$40$^{a}$ & --                 & $1\times 10^{4}\ ^{b}$ & B0.5$^{b}$   & --     & 1050$^{c}$ \\
      IRAS 06084 VLA4  & --             & --          & --                    & --                 & $1\times 10^{3}\ ^{b}$ & B3$^{b}$     & --     & 1050$^{c}$ \\
      CD-42 11721      & 30000         & 3.88       & 5.08                 & $8.71\times 10^{3}$ & $1.05\times 10^{3}$           & B0IVep$^{d}$ & I     & 400$^{e}$  \\
      TY CrA           & 12000         & 4.07       & 2.02                 & 30.9              & 27.5                        & B8e$^{f}$    & ?     & 130$^{g}$  \\
      HD~176386         & 11000         & 3.94       & 0.62                 & 49.0              & 21.4                        & B9IV$^{h}$   & ?     & 130$^{f}$  \\
      \hline
    \end{tabular}}
\par
\medskip
     Note: $L_{\star}$ is the extinction corrected luminosity of the stellar photospheres, $L_{\rm bol}$ is the observed luminosity, including the infrared excess.\\
     $^a$ \cite{1985ApJ...288..725H}; $^b$ \cite{2000ApJ...531..861G}; $^c$ \cite{1970IAUS...38..219R}; $^d$ \cite{1990ApJS...73..461S}; $^e$ \cite{1990ApetSS.166...99D};
     $^f$ \cite{1998AJ....115.1617C}; $^g$ \cite{1981AJ.....86...62M}; $^h$ \cite{1982BAAS...14Q.615H}. \\
     Non referenced data have been obtained from Van den Ancker (private communication).
\end{table}