ARCRAIDER I: Detailed optical and X-ray analysis of the cooling flow cluster Z3146

Details ARCRAIDER I: Detailed optical and X-ray analysis of the cooling flow cluster Z3146 ARCRAIDER I: Detailed optical and X-ray analysis of the cooling flow cluster Z3146

2007-05-28

arxiv.org/abs/0705.4053v1

Astronomy and Astrophysics

Astrophysics

accepted by A&A; 23 pages, 28 figures, 6 tables; High resolution version can be found here: http://astro.uibk.ac.at/~w.kausc

Scientific paper

10.1051/0004-6361:20054413

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 F606W 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 ~1600M_\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.

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