\begin{table}%tA.2 \caption{\label{t:cluster_members}Spectroscopically confirmed cluster member galaxies (upper part) and nonmember galaxies targeted by VLT-MOS spectroscopy sorted by increasing $z$-band magnitude.} %\centering \par \begin{tabular}{lllcccccl} \hline \hline \noalign{\smallskip} (1) &(2) &(3) &(4) &(5) &(6) &(7) &(8) &(9) \\ ID & RA J2000 & Dec J2000 & $z$ & $R-z$ & redshift $z$ & $z_{\rm err}$ & Distance & Comment\\ & (deg) & (deg) & (mag) & (mag) & & & (arcsec) &\\ \hline 1-10 & 151.95762 & 12.97789 & 20.51 & 1.92 & 1.08423 & 0.00012 & 24.1 \\ 1-5 & 151.96234 & 12.96729 & 20.80 & 1.59 & 1.08086 & 0.00012 & 17.8 \\ 1-9 & 151.95854 & 12.97640 & 21.02 & 2.05 & 1.08709 & 0.00021 & 17.8 \\ 1-8 & 151.95809 & 12.97400 & 21.03 & 1.81 & 1.07712 & 0.00078 & 11.3 \\ 1-19 & 151.91809 & 13.00307 & 21.06 & 1.89 & 1.07834 & 0.00016 & 187.0 \\ 1-20 & 151.92177 & 13.00492 & 21.49 & 1.93 & 1.08340 & 0.00014 & 181.3 \\ 2-14 & 151.96438 & 12.95042 & 21.62 & 1.82 & 1.08715 & 0.00008 & 77.9 \\ 2-5 & 151.91762 & 12.92344 & 21.78 & 1.76 & 1.08309 & 0.00011 & 229.7 \\ 1-14 & 151.95837 & 12.98867 & 21.81 & 1.98 & 1.07465 & 0.00009 & 61.5 \\ 1-21 & 151.92233 & 13.00835 & 21.85 & 1.77 & 1.08207 & 0.00010 & 188.3 \\ 1-16 & 151.92898 & 12.99330 & 22.05 & 1.48 & 1.07995 & 0.00009 & 135.0 \\ 2-9 & 151.92196 & 12.93457 & 22.19 & 1.75 & 1.07749 & 0.00009 & 189.9 \\ 1-7 & 151.96153 & 12.97194 & 22.21 & 1.92 & 1.08463 & 0.00013 & 4.6 \\ 1-3 & 151.96457 & 12.96373 & 22.34 & 1.57 & 1.08069 & 0.00022 & 32.6 \\ 2-1 & 151.91657 & 12.91210 & 22.51 & 1.48 & 1.08085: & 0.00066 & 263.7 \\ 1-15 & 151.94809 & 12.99093 & 22.59 & 1.88 & 1.08370 & 0.00017 & 81.5 \\ 1-6 & 151.96098 & 12.97008 & 22.67 & 1.95 & 1.07673 & 0.00017 & 6.5 \\ 1-2 & 151.956 & 12.96175 & 22.83 & 1.85 & 1.08538: & 0.00033 & 39.1 \\ 1-13 & 151.95492 & 12.98622 & 22.90 & 1.98 & 1.08834: & 0.00020 & 55.6 \\ \hline 1-23 & 151.97453 & 13.01627 & 18.74 & 3.16 & 0.0 & 0.0 & 167.9& late-type star \\ 1-11 & 151.94881 & 12.98072 & 20.06 & 2.14 & 0.0 & 0.0 & 52.0 & late-type star \\ 1-12 & 151.96350 & 12.98431 & 20.74 & 1.75 & 0.89789 & 0.00022 & 46.7 & [OII] \\ 1-1 & 151.94980 & 12.95957 & 20.94 & 1.57 & 1.05870 & 0.00021 & 57.4 \\ 2-11 & 151.94960 & 12.94159 & 21.25 & 1.47 & 0.88879 & 0.00015 & 114.8 & [OII]\\ 1-18 & 151.98341 & 12.99842 & 21.87 & 1.80 & 1.18291 & 0.00008 & 125.6 \\ 2-3 & 151.95777 & 12.91942 & 22.19 & 1.86 & 1.03811: & 0.00011 & 188.4 \\ 1-22 & 151.96277 & 13.01301 & 22.21 & 1.35 & 0.80748 & 0.00013 & 148.9 & [OII]\\ 2-2 & 151.96559 & 12.91600 & 22.24 & 1.42 & 0.89511 & 0.00021 & 201.3 \\ 2-7 & 151.93620 & 12.92835 & 22.43 & 1.62 & 0.90020 & 0.00027 & 177.6 \\ 2-8 & 151.97170 & 12.93165 & 22.58 & 1.82 & 1.04382: & 0.00020 & 149.5 \\ 2-6 & 151.91717 & 12.92623 & 22.68 & 1.36 & 0.76364 & 0.00014 & 223.1 \\ 2-10 & 151.96192 & 12.93803 & 23.73: & 0.54: & 0.93729 & 0.00019 & 121.3 \\ \hline \end{tabular} \tablefoot {Column (8) lists the positional offset with respect to the assumed cluster center at the nominal X-ray position (RA~$151.9604^{\circ}$, Dec~$12.9717^{\circ}$). A~value followed by a colon in Cols.~(4)$-$(6) indicates a less secure measurement, which may be subject to future adjustment.} \end{table}