| Issue |
A&A
Volume 471, Number 1, August III 2007
|
|
|---|---|---|
| Page(s) | 31 - 50 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20054413 | |
| Published online | 30 May 2007 | |
ARCRAIDER. I. Detailed optical and X-ray analysis of the cooling flow cluster Z3146*
1
Institut für Astro- und Teilchenphysik, University of Innsbruck, Technikerstr. 25, 6020 Innsbruck, Austria e-mail: wolfgang.kausch@uibk.ac.at
2
INAF – Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, Italy
3
Argelander-Institut für Astronomie (AIfA), University of Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
Received:
25
October
2005
Accepted:
6
April
2007
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 
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 ~1600 
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
kpc indicating a velocity dispersion of
km s-1.
Key words: gravitational lensing / galaxies: clusters: individual: Z3146
Based on observations made with the NASA/ESA Hubble Space Telescope, obtained from the data archive at the Space Telescope Institute (PID-number 8301). STScI is operated by the association of Universities for Research in Astronomy, Inc. under the NASA contract NAS 5-26555. Also based on observations made with ESO Telescopes at the La Silla or Paranal Observatories under programme ID 68.A-02555 and 073.A-0050 and on observations with XMM-Newton, an ESA Science Mission with instruments and contributions directly funded by ESA Member states and the USA (NASA).
© ESO, 2007
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