\begin{table}%t4 \caption{\label{offsets}Conunterparts of the radio detections.} \small%\centerline { \begin{tabular}{lcccccc} \hline\hline \noalign{\smallskip} Radio & Optical/IR & $d_{\rm obs}$ & $r_{\rm src}$ & $P_{\rm assoc.}$\\ source & source & (arcsecs) & (arcsecs) & ($\%$) \\ \noalign{\smallskip} \hline \noalign{\smallskip} E1 & B1$^\ast$ & 0.38 & 0.6 & 67.8 \\ \noalign{\smallskip} \hline \noalign{\smallskip} CR1 & ARC 1.1 & 1.12 & 0.15 & $<$1 \\ & ARC 2.1 & 1.40 & 0.25 & $<$1 \\ & ARC 3.1 & 1.60 & 0.20 & $<$1 \\ \noalign{\smallskip} \hline \noalign{\smallskip} CR2 & G2 & 1.39 & 0.70 & $<$1 \\ & C2$^\ast$ & 1.82 & 0.60 & $<$1 \\ & ARC 1.2 & 1.92 & 0.15 & $<$1 \\ \noalign{\smallskip} \hline \noalign{\smallskip} E2 & B2$^\ast$ & 0.26 & 0.60 & 79.29 \\ & G10 & 0.74 & 0.23 & $< $1 \\ \noalign{\smallskip} \hline \noalign{\smallskip} E3 & 4.3$^\ast$ & 0.77 & 0.60 & 20.7 \\ & 5.3$^\ast$ & 1.22 & 0.30 & $<$1 \\ & G23 & 1.54 & 0.35 & $< $1 \\ \noalign{\smallskip} \hline \noalign{\smallskip} RJ & G8 & 1.91 & 0.30 & $<$1 \\ & G11 & 2.40 & 0.26 & $<$1 \\ & G14 & 1.39 & 0.60 & $<$1 \\ \hline \end{tabular}} \smallskip The columns show: possible counterparts of the radio detections (Optical/IR source), mesured offset between the radio source and the optical/IR source ($d_{\rm obs}$), radius of the optical/IR source ($r_{\rm src}$) and probability that the centroid of the radio source lies inside the area of the optical/IR source ($P_{\rm assoc.}$). The coordinates of the counterpart sources can be found in Tables~\ref{tab_catalog} and~\ref{tab_constrains}. Sources which positions were taken from the $K'$~band image are indicated with an asterisk (otherwise we used the HST coordinates). The positions of the radio sources used to calculate~$d_{\rm obs}$ correspond to the values derived with {\sc maxfit} in the aligned radio map. \end{table}