\begin{table}%t4
\caption{\label{sn}Summary of the progenitor and peak bolometric luminosities of the extragalactic 
SNe imposters (top panel) and the dust enshrouded optical transients (lower panel).}
\small%\centerline
 {
\begin{tabular}{lccl}
\hline
\hline
Transient &\multicolumn{2}{c}{$\log (L_{\ast}/L_{\odot})$} & Reference  
\\
          &  progenitor & outburst \\        
\hline
SN 1961V & 6.4 & 8.7 &a, b\\
SN 1954J  & 5.7 & 6.5 &b\\
SN 1997bs & ${<}6.2$ & 7.4 &c \\
SN 2000ch  & 6.2  & 6.9 & d \\
\hline
NGC 300-OT1  &4.5 & 6.6 & e\\
            & 4.7 & 7.1 & f\\
SN 2008S      &4.5 &  7.5 & g, h\\
\hline
\end{tabular}}
\medskip
Luminosities assume a bolometric correction of ${\sim}0$ as appropiate for an F~supergiant. References are $^a$~Goodrich et~al. (\cite{goodrich}); $^b$~Humphreys et~al. (\cite{h99}); $^c$~\mbox{Van Dyk} et~al. \cite{1997bs}); $^d$~Wagner et~al. (\cite{wagner}); $^e$~Bond et~al. (\cite{bond}); $^f$~Berger et~al. (\cite{berger}); $^g$~Smith et~al. (\cite{smith08b}); $^h$~Prieto et~al. (\cite{prieto08}).
\end{table}