\begin{table}%T1
\par
%\centering
\par
\caption{Parameters used in the simulations.}
\label{tab1}
\begin{tabular}{ccccccc}
\hline\hline
\noalign{\smallskip}
Solid core mass ($M_{\oplus}$) & $M_{\mbox{\scriptsize core}}$ & 
& 0.1 & 1  & 2 & 4  \\ %\hline
\noalign{\smallskip}
Luminosity of the atmosphere ($L_{\sun}$) & 
$L$ & 
& $1 \times 10^{-7}$ & $1 \times 10^{-8}$ & $1 \times 10^{-9}$ &   \\ %\hline
\noalign{\smallskip}
Initial velocity 
($r_{\mbox{\scriptsize H}} \Omega_{\mbox{\scriptsize K}}$) & $v_{\infty}$ &
& 0.1 & 1 & 10 &   \\\hline
\end{tabular}
%\begin{list}{}{}
%The solar luminocity is dnoted by $L_{\sun}$ and $3.9 \times 10^{33}$erg/s.
%\end{list}
\end{table}