\begin{table}%T2
  \caption{Model parameter values.}\label{parameters}
  \small%\centerline
{
	\begin{tabular}{l c}
	\hline \hline
    Envelope & Value \\
	\hline\noalign{\smallskip}
	Outer radius$^a$ 				& 2000 AU\\
	Envelope mass$^a$				& 0.093~$M_\odot$\\
	Inclination$^{a,b}$ 			& 74$^\circ$\\
	HCO$^+$ abundance$^a$\qquad 	& 3.0 $\times$ 10$^{-9}$\\
	\quad & \quad\\
	\hline
	Disk & Value \\
	\hline\noalign{\smallskip}
	Radius$^b$ 						& 200 AU\\	
	Disk mass$^b$ 					& 4 $\times$ 10$^{-3}$~$M_\odot$\\
	Inclination$^b$ 				& 40$^\circ$\\
	Scale height$^c$ 				& $z=0.25~R$\\
	Central mass$^a$ 				& 1.35~$M_\odot$\\
	Central luminosity$^c$			& 3.7~$L_\odot$\\
	Distance$^c$ 					& 140 pc\\
	\hline
  \end{tabular}}
\smallskip
$^a$ Values from Paper I.\\
$^b$ Fitted values.\\
$^c$ Values adopted from the literature. 
\end{table}