\begin{table}%t5
%\centering
\par
\caption{\label{t:masses}The derived dust shell-masses based on the observed $F_{\rm CSE}/F_*$ ratios.}
\begin{tabular}{llcc} 
\hline\hline \noalign {\smallskip}
Source 	& Filter & $M_{\rm{d}}$ &$M_{\rm{g}}$\tablefootmark{(a)}\\
 & &[$10^{-6}~M_{\odot}$] & [$10^{-3}~M_{\odot}$]\\
\hline
R~Scl 	& $f475$ 	& 2.6 &2.5\\
		& $f606$	& 2.1 &\\
		& $f814$	& 4.0 &\\
U~Cam	& $f606$	& 0.2 &0.9\\
		& $f814$	& 0.3 &\\
\hline
\end{tabular}
\tablefoot{\tablefoottext{a}{The shell gas mass estimated from CO radio line modelling \citep{schoetal05b}.}}
\end{table}