\begin{table}%t1 \label{tab:tab1} \caption{Main characteristics of the runs. ``D'' stands for AMR triggered by gas/DM over-density, while ``V'' stands for AMR triggered by velocity jumps. $\Delta$ is the peak gas spatial resolution. $\delta$ specifies the value adopted to trigger AMR, see Sect.~3 for explanations.} %\centering \par \begin{tabular}{c|c|c|c|c} \hline \hline ID & $N_{\rm grid}$ & $M_{\rm dm}$ [$M_{\odot}/h$] & $\Delta$ [kpc] & AMR \\ \hline v256-4 & $256^{3}$ & $6.76 \times 10^{8}$ & $18$ & D+V($\delta>10$) \\ %& 0.55 \\ % vB256 & $256^{3}$ & $6.76 \cdot 10^{8}$ & $18kpc$ & D+V($>30$) & adiabatic & 0.54 \\ v256-3 & $256^{3}$ & $6.76 \times 10^{8}$ & $36$ & D+V($\delta>3$) \\% & 0.55 \\ v128-3 & $128^{3}$ & $5.39 \times 10^{9}$& $36$ & D+V($\delta>3$) \\%& 0.54 \\ v64-3 & $64^{3}$ & $4.32 \times 10^{10}$& $36$ & D+V($\delta>3$) \\%& 0.48 \\ d128 & $128^{3}$ & $5.39 \times 10^{9}$& $36$ & D \\%& 0.57 \\ v128-10 & $128^{3}$ & $5.39 \times 10^{9}$ & $36$ & D+V($\delta>10$) \\%& 0.28 \\ v128-1 & $128^{3}$ & $5.39 \times 10^{9}$& $36$ & D+V($\delta>1$) \\%& 0.51\\ v128-z2 & $128^{3}$ & $5.39 \times 10^{9}$& $36$ & D+V($\delta>3$,$z>2$) \\%& 0.51\\ \hline \end{tabular} \end{table}