We present a detailed analysis of the medium redshift ( z = 0.2906 ) galaxy cluster Z3146 which is part of the ongoing ARCRAIDER project , a systematic search for gravitational arcs in massive clusters of galaxies .
The analysis of Z3146 is based on deep optical wide field observations in the B , V and R bands obtained with the WFI @ ESO2.2m , and shallow archival WFPC2 @ HST taken with the F 606 W filter , which are used for strong as well as weak lensing analyses .
Additionally we have used publicly available XMM/Newton observations for a detailed X-ray analysis of Z3146 .
Both methods , lensing and X-ray , were used to determine the dynamical state and to estimate the total mass .
We also identified four gravitational arc candidates . We find this cluster to be in a relaxed state , which is confirmed by a large cooling flow with nominal \sim 1600 M _ { \odot } per year , regular galaxy density and light distributions and a regular shape of the weak lensing mass reconstruction .
The mass content derived with the different methods agrees well within 25 % at r _ { 200 } = 1661 h _ { 70 } ^ { -1 } kpc indicating a velocity dispersion of \sigma _ { v } = 869 ^ { +124 } _ { -153 } km/s .