\begin{table}%t1 \par %\centering \par \caption{\label{models}Main features of the four WD models used in the simulations.} \begin{tabular}{ccccc} \hline \hline \noalign{\smallskip} Model & $T_{\rm c}$ [$10^8~{\rm K}$] & $\rho_{\rm c}$ [$10^9~{\rm g\ cm^{-3}}$] & $g$ [$10^9~{\rm cm\ s^{-2}}$] & $r_{{\rm b}}$ [km]\\ \hline 1 & 7.84 & 1.82 & 5.18 & 163\\ 3 & 7.63 & 2.08 & 5.90 & 154\\ 4 & 7.15 & 3.12 & 8.78 & 135\\ 6 & 6.94 & 4.17 & 11.7 & 123\\ \hline \end{tabular} \end{table}