Rights statement: © 2019. The American Astronomical Society. All rights reserved.
Accepted author manuscript, 2.75 MB, PDF document
Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License
Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Merging Cluster Collaboration
T2 - Optical and Spectroscopic Survey of a Radio-Selected Sample of Twenty Nine Merging Galaxy Clusters
AU - Golovich, Nathan
AU - Dawson, William A.
AU - Wittman, David M.
AU - Jee, Myungkook J.
AU - Benson, Bryant
AU - Lemaux, Brian
AU - Weeren, Reinout J. van
AU - Andrade-Santos, Felipe
AU - Sobral, David
AU - Gasperin, Francesco de
AU - Bruggen, Marcus
AU - Bradac, Marusa
AU - Finner, Kyle
AU - Peter, Annika
N1 - © 2019. The American Astronomical Society. All rights reserved.
PY - 2019/2/18
Y1 - 2019/2/18
N2 - Multi-band photometric and multi-object spectroscopic surveys of merging galaxy clusters allow for the characterization of the distributions of constituent dark matter and galaxy populations, constraints on the dynamics of the merging subclusters, and an understanding of galaxy evolution of member galaxies. We present deep photometric observations from Subaru/SuprimeCam and a catalog of $\sim$5400 spectroscopic cluster members from Keck/DEIMOS across 29 merging galaxy clusters ranging in redshift from $z=0.07$ to $0.55$. The ensemble is compiled based on the presence of radio relics, which highlight cluster scale collisionless shocks in the intra-cluster medium. Together with the spectroscopic and photometric information, the velocities, timescales, and geometries of the respective merging events may be tightly constrained. In this preliminary analysis, the velocity distributions of 28 of the 29 clusters are shown to be well fit by single Gaussians. This indicates that radio relic mergers largely occur transverse to the line of sight and/or near apocenter. In this paper, we present our optical and spectroscopic surveys, preliminary results, and a discussion of the value of radio relic mergers for developing accurate dynamical models of each system.
AB - Multi-band photometric and multi-object spectroscopic surveys of merging galaxy clusters allow for the characterization of the distributions of constituent dark matter and galaxy populations, constraints on the dynamics of the merging subclusters, and an understanding of galaxy evolution of member galaxies. We present deep photometric observations from Subaru/SuprimeCam and a catalog of $\sim$5400 spectroscopic cluster members from Keck/DEIMOS across 29 merging galaxy clusters ranging in redshift from $z=0.07$ to $0.55$. The ensemble is compiled based on the presence of radio relics, which highlight cluster scale collisionless shocks in the intra-cluster medium. Together with the spectroscopic and photometric information, the velocities, timescales, and geometries of the respective merging events may be tightly constrained. In this preliminary analysis, the velocity distributions of 28 of the 29 clusters are shown to be well fit by single Gaussians. This indicates that radio relic mergers largely occur transverse to the line of sight and/or near apocenter. In this paper, we present our optical and spectroscopic surveys, preliminary results, and a discussion of the value of radio relic mergers for developing accurate dynamical models of each system.
KW - astro-ph.CO
KW - astro-ph.GA
U2 - 10.3847/1538-4365/aaf88b
DO - 10.3847/1538-4365/aaf88b
M3 - Journal article
VL - 240
JO - The Astrophysical Journal Supplement Series
JF - The Astrophysical Journal Supplement Series
SN - 0067-0049
IS - 2
M1 - 39
ER -