\begin{table}%t8 \caption{\label{lensmodel_results}Most likely mass model parameters.} \small%\centerline { \begin{tabular}{cccccccc} \hline \hline \noalign{\smallskip} Clump & X & Y & $\epsilon$ & $\theta$ & $\sigma_0$ & $r_{\rm core}$ & $r_{\rm cut}$ \\ & ($\arcsec$) & ($\arcsec$) & & (deg) & & (kpc) & (kpc) \\ \hline \noalign{\smallskip} Cluster & $\rm -0.5^{+4.1}_{-1.2}$ & 2.7~$\pm$~1.5 & $\rm 0.69^{+0.0}_{-0.1}$ & 31.3~$\pm$~1.1 & 1144.8~$\pm$~36 & 60.8~$\pm$~24 & [1500] \\ \noalign{\smallskip} L$^*$ elliptical galaxy & -- & -- &-- & -- & 135.1~$\pm$~43.9 & [0] & $\rm 30.1^{+43.6}_{-4.9}$ \\ \noalign{\smallskip} \hline \end{tabular}} \smallskip The columns show: position respect to the brightest cluster galaxy (X,Y), ellipticity of the mass distribution ($\epsilon$, expressed as $a^2-b^2/a^2+b^2$, were $a$ and $b$ are the semi-major and semi minor axes of the ellipse that describes the light distribution of the clump), position angle ($\theta$), velocity dispersion~($\sigma_0$), core radius ($r_{\rm core}$) and scale radius ($r_{\rm cut}$). Error bars correspond to $1\sigma$ confidence level as inferred from the \textsc{mcmc} optimization. Values into brackets are not optimized. When the posterior distribution is not Gaussian, we report the mode and asymmetric error bars. The coordinates of the brightest cluster galaxy are $\rm RA=4^{h} 54^{m} 10.87^{s}$, $\rm Dec=-3^{\circ} 0\arcmin 54.00\arcsec$. \end{table}