\begin{table}%t2
   %\centering
\par
      \caption{Successful solutions for the self-gravitating disc. \label{tab:sg_fit}}
             $$ 
         \begin{array}{rll}
            \hline\hline
            \noalign{\smallskip}
          \gamma \hspace*{1mm}& \hspace*{6mm}\alpha_{\rm out} 
	    & M_{\rm disc}(r \le r_{\rm out}) / \Mbh \\
            \noalign{\smallskip}
            \hline
            \noalign{\smallskip}
           0.3 & \hspace*{5mm}0.002^{a} & \hspace*{7mm}7.0     \\
	  -0.6 & \hspace*{5mm}0.02               & \hspace*{7mm}1.4     \\
          -1.5 & \hspace*{5mm}0.1                & \hspace*{7mm}0.4     \\
            \noalign{\smallskip}
            \hline
         \end{array}
     $$ 
\begin{list}{}{}
\item[$^{a}$] Namely, constant $\alpha$ in the entire disc.
\end{list}
   \end{table}