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Title: MC 2 : galaxy imaging and redshift analysis of the merging cluster Ciza J2242.8+5301

X-ray and radio observations of CIZA J2242.8+5301 suggest that it is a major cluster merger. Despite being well studied in the X-ray, and radio, little has been presented on the cluster structure and dynamics inferred from its galaxy population. We carried out a deep (i < 25) broad band imaging survey of the system with Subaru SuprimeCam (g & i bands) and the Canada France Hawaii Telescope (r band) as well as a comprehensive spectroscopic survey of the cluster area (505 redshifts) using Keck DEIMOS. We use this data to perform a comprehensive galaxy/redshift analysis of the system, which is the first step to a proper understanding the geometry and dynamics of the merger, as well as using the merger to constrain self-interacting dark matter.
Authors:
ORCiD logo [1] ;  [2] ;  [3] ;  [2] ;  [2] ;  [2] ;  [4] ;  [5] ;  [3] ; ORCiD logo [6]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of California, Davis, CA (United States)
  3. Leiden Univ. (Netherlands)
  4. Leiden Univ. (Netherlands); Univ. of Lisbon (Portugal). Centro de Astronomia e Astrofisica
  5. Univ. of Hamburg (Germany)
  6. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
Publication Date:
Report Number(s):
LLNL-JRNL-661846
Journal ID: ISSN 1538-4357; TRN: US1703162
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 805; Journal Issue: 2; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Galaxies; clusters
OSTI Identifier:
1408074