\begin{table}%t1
%\centering
\par
  \caption{\label{modelparm}Parameters of the modeled low-mass star disks.}
    \begin{tabular}{ll}
  \hline
  \hline
  Parameters        & Adopted values                                  \\
  \hline
  \multicolumn{2}{c}{stellar parameter} \\
  $T_\star$         & 4000~K                                        \\
  $L_\star$         & 1~$L_{\odot}$                                    \\
  $M_\star$         & 0.5~$M_{\odot}$                                  \\
  $d$               & 140~pc                                          \\
  $R_\star$         & $1.45\times10^{11}$~cm                          \\
  \hline
  \multicolumn{2}{c}{dust grains (common)}                            \\
  chemistry         & DL-chemistry                                    \\
  size              & $0.005\le a\le a_{\rm max}~\mu$m             \\
                    & $n(a)\propto a^{-3.5}$                          \\
  \hline
  \multicolumn{2}{c}{disk} \\
  $R_{\rm in}$   & 0.05~AU                                         \\
  $R_{\rm disk}$ & 100~AU                                          \\
  $M_{\rm disk}$ & 0.01~$M_{\sun}$                                 \\
  $H$               & 0.1, 0.2, 0.3, 0.5, and 1.0                     \\
  $a_{\rm max}$  & 0.25, 0.5, 1.0, 10.0, 100.0, and 1000.0~$\mu$m  \\
  \hline
  \multicolumn{2}{c}{envelope} \\
  $R_{\rm out}$  & 5000~AU                                         \\
  $\dot{M}_{\rm env}$ & $1.0\times 10^{-6}~M_{\odot}$~yr$^{-1}$     \\
  $\mu_0$           & $\cos\left(80\degr/2\right)$                    \\
  $a_{\rm max}$  & 0.25~$\mu$m                                     \\
  \hline
  \end{tabular}
 \end{table}