\begin{table}%t2
%\centering
\par
\caption{\label{modelfit}Model parameters ($d = 535$~pc).}
\begin{tabular}{ll}
\hline\hline
\noalign{\smallskip}
$\dot{M}$ (in hydrogen)                 & $0.69\times10^{-7}$~\Msold\\
$\mu$                             & 1.3\\
$t_1$	              & $61\times10^3$~years\\
$t_{\rm DS}$	              & $5.4\times10^5$~years\\
$r_1$	              & 0.31~pc (2.0$'$)\\
$r_{\rm f}$	              & 0.41~pc (2.64$'$)\\
$r_2$	              & 0.47~pc (3.0$'$)\\
$T_0$($\equiv$$T_1^-$), $T_1^+$  & 20 K, 746 K\\
$T_{\rm f}$ (=$ T_2$)	              & 81 K\\
$v_0$($\equiv$$v_1^-$), $v_1^+$  & 5.0~\kms, 1.27~\kms\\
$v_{\rm f}$	              & 0.066~\kms\\
$v_2$	              & 0.52~\kms\\
$n_1^-$, $n_1^+$	              & 0.45 H~cm$^{-3}$, 1.8 H~cm$^{-3}$\\
$n_{\rm f}^-$, $n_{\rm f}^+$	              & 21.0 H~cm$^{-3}$, 2.15 H~cm$^{-3}$\\
$n_2$	              & 1.66 H~cm$^{-3}$\\
$M_{r < r_1}$ (in hydrogen)       & $4.2\times10^{-3}$ \Msol\\
$M_{\rm DT,CS}$   (in hydrogen)       & $3.7\times10^{-2}$ \Msol\\
$M_{\rm DT,EX}$   (in hydrogen)       & $6.3\times10^{-3}$ \Msol\\
\hline
\end{tabular} 
\par
\tablefoot{The notations are as in Libert et~al. (\cite{Libert07}). In particular, $t_{\rm DS}$ 
is the formation time of the detached shell, $M_{\rm DT,CS}$ is the mass of the 
circumstellar component of the detached shell, and $M_{\rm DT,EX}$ is the external 
mass accreted in the detached shell.}
\end{table}