\begin{table}%t2
%\centering
\par
\caption{Cooling properties of the CO-core WD companion of \object{PSR~J2145$-$0750}.
All values are taken from WD evolutionary models of 
Bl{\" o}cker (\cite{Blocker95}) and Bl{\" o}cker et~al. (\cite{Blocker97}).
\label{tabwd2}
}
\begin{tabular}{llll}
\hline\hline \multicolumn{4}{c}{Model parameters of the WD
companion}\\\hline 
$M_{\rm WD}/M_\odot$& $\log (L/L_\odot)$ & $T_{\rm
eff}/$K & $\tau_{\rm cool}/$Gyr\\\hline
0.524               & --3.348 & 7200 & 1.35\\
0.524               & --3.913 & 5250 & 2.60\\\hline
0.605               & --3.448 & 7200 & 1.50\\
0.605               & --3.995 & 5250 & 3.00\\\hline
0.696               & --3.532 & 7200 & 1.90\\
0.696               & --4.087 & 5250 & 3.70\\\hline
0.836               & --3.661 & 7200 & 2.40\\
0.836               & --4.285 & 5250 & 3.40\\\hline
0.940               & --3.825 & 7200 & 2.80\\
0.940               & --4.850 & 5250 & 4.85\\\hline
\end{tabular}
\end{table}