\begin{table}%t1
%\centering
\par
\caption{\label{griddef}Definition of the grid. $\Delta$ denotes the grid step.}
\small  \begin{tabular}{lllll}  
\hline \hline
$M_\star$  & $\log(L_\star)$ & $T_{\rm eff}$ & $\log({\rm C{-}O})$+12 & $\Delta u_{\rm p}$\\[1mm]
[$M_\odot$] & [$L_\odot$] & [K] & & [km~s$^{-1}$] \\[1mm]
\hline
& $\Delta = 0.15$  & $\Delta = 200$ & $ \Delta =0.30$ & $\Delta = 2.0$\\[1mm]
  0.75 & 3.55--3.85 & 2400--3200 & 7.90--9.10 & 2.0--6.0 \\
  1.0  & 3.70--4.00 & 2400--3200 & 7.90--9.10 & 2.0--6.0 \\
  1.5  & 3.85--4.15 & 2400--3200 & 7.90--9.10 & 2.0--6.0 \\
  2.0  & 3.85--4.15 & 2400--3200 & 7.90--9.10 & 2.0--6.0 \\[1mm]
  \hline
  \end{tabular}
  \end{table}