\begin{table}%t1
%\centering
\par
\caption{\label{table:1}List of model parameters and their standard values and the range over which the parameters are varied.} 
\begin{tabular}{l l l l}
\hline\hline 
\noalign{\smallskip}
Parameter   &   Standard value  &  Minimum   &  Maximum\\
\hline\\[-3.25mm] 
Mass-loss   &   $3 \times 10^{-5}~M_{\odot}~{\rm yr}^{-1}$	& $1 \times 10^{-6}~M_{\odot}~{\rm yr}^{-1}$    &   $1 \times 10^{-4}~M_{\odot}~{\rm yr}^{-1}$\\
Metallic iron abundance   &  4\%  &  0\%   &   9\%\\
Forsterite abundance      &  4\%  &  0\%   &   10\%\\
Enstatite abundance	      &  set equal to forsterite   &   0\% & 10\%\\
Outer radius    &	500~AU  & 300~AU	& 3000~AU\\
\hline 
\end{tabular}
\end{table}