MC2: Multiwavelength and Dynamical Analysis of the Merging Galaxy Cluster ZwCl 0008.8+5215: An Older and Less Massive Bullet Cluster
Abstract
Here we present and analyze a rich data set including Subaru/SuprimeCam, HST/Advanced Camera for Surveys and Wide Field Camera 3, Keck/DEIMOS, Chandra/ACIS-I, and JVLA/C and D array for the merging cluster of galaxies ZwCl 0008.8+5215. With a joint Subaru+HST weak gravitational lensing analysis, we identify two dominant subclusters and estimate the masses to be $${M}_{200}={5.7}_{-1.8}^{+2.8}\times {10}^{14}\,{M}_{\odot }$$ and $${1.2}_{-0.6}^{+1.4}\times {10}^{14}\,{M}_{\odot }$$. We estimate the projected separation between the two subclusters to be $${924}_{-206}^{+243}\,\mathrm{kpc}$$. We perform a clustering analysis of spectroscopically confirmed cluster member galaxies and estimate the line-of-sight velocity difference between the two subclusters to be $$92\pm 164\,\mathrm{km}\,{{\rm{s}}}^{-1}$$. We further motivate, discuss, and analyze the merger scenario through an analysis of the 42 ks of Chandra/ACIS-I and JVLA/C and D array polarization data. The X-ray surface brightness profile reveals a merging gas-core reminiscent of the Bullet Cluster. The global X-ray luminosity in the 0.5–7.0 keV band is $$1.7\pm 0.1\times {10}^{44}\,\mathrm{erg}\,{{\rm{s}}}^{-1}$$ and the global X-ray temperature is 4.90 ± 0.13 keV. The radio relics are polarized up to $$40 \% $$, and along with the masses, velocities, and positions of the two subclusters, we input these quantities into a Monte Carlo dynamical analysis and estimate the merger velocity at pericenter to be $${1800}_{-300}^{+400}\,\mathrm{km}\,{{\rm{s}}}^{-1}$$. This is a lower-mass version of the Bullet Cluster and therefore may prove useful in testing alternative models of dark matter (DM). We do not find significant offsets between DM and galaxies, but the uncertainties are large with the current lensing data. Furthermore, in the east, the BCG is offset from other luminous cluster galaxies, which poses a puzzle for defining DM–galaxy offsets.
- Authors:
-
[1];
[2];
[5]
- Univ. of California, Davis, CA (United States)
- Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Univ. of California, Davis, CA (United States); Yonsei Univ., Seoul (Korea, Republic of)
- Univ. of California, Davis, CA (United States); Univ. de Lisboa, Lisbon (Portugal)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF); National Aeronautics and Space Administration (NASA)
- OSTI Identifier:
- 1660517
- Report Number(s):
- LLNL-JRNL-774223
Journal ID: ISSN 1538-4357; 966886; TRN: US2203523
- Grant/Contract Number:
- AC52-07NA27344; 1518246; HST-GO-13343.001-A; GO5-14130X; NAS8-03060
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astrophysical Journal (Online)
- Additional Journal Information:
- Journal Name: The Astrophysical Journal (Online); Journal Volume: 838; Journal Issue: 2; Journal ID: ISSN 1538-4357
- Publisher:
- Institute of Physics (IOP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; galaxies: clusters: individual (ZwCl 0008.8+5215); gravitational lensing; X-rays: galaxies: clusters; galaxies: clusters: intracluster medium; (cosmology:) large-scale structure of universe
Citation Formats
Golovich, Nathan, Weeren, Reinout van, Dawson, William A., Jee, M. James, and Wittman, David. MC2: Multiwavelength and Dynamical Analysis of the Merging Galaxy Cluster ZwCl 0008.8+5215: An Older and Less Massive Bullet Cluster. United States: N. p., 2017.
Web. doi:10.3847/1538-4357/aa667f.
Golovich, Nathan, Weeren, Reinout van, Dawson, William A., Jee, M. James, & Wittman, David. MC2: Multiwavelength and Dynamical Analysis of the Merging Galaxy Cluster ZwCl 0008.8+5215: An Older and Less Massive Bullet Cluster. United States. https://doi.org/10.3847/1538-4357/aa667f
Golovich, Nathan, Weeren, Reinout van, Dawson, William A., Jee, M. James, and Wittman, David. Fri .
"MC2: Multiwavelength and Dynamical Analysis of the Merging Galaxy Cluster ZwCl 0008.8+5215: An Older and Less Massive Bullet Cluster". United States. https://doi.org/10.3847/1538-4357/aa667f. https://www.osti.gov/servlets/purl/1660517.
@article{osti_1660517,
title = {MC2: Multiwavelength and Dynamical Analysis of the Merging Galaxy Cluster ZwCl 0008.8+5215: An Older and Less Massive Bullet Cluster},
author = {Golovich, Nathan and Weeren, Reinout van and Dawson, William A. and Jee, M. James and Wittman, David},
abstractNote = {Here we present and analyze a rich data set including Subaru/SuprimeCam, HST/Advanced Camera for Surveys and Wide Field Camera 3, Keck/DEIMOS, Chandra/ACIS-I, and JVLA/C and D array for the merging cluster of galaxies ZwCl 0008.8+5215. With a joint Subaru+HST weak gravitational lensing analysis, we identify two dominant subclusters and estimate the masses to be ${M}_{200}={5.7}_{-1.8}^{+2.8}\times {10}^{14}\,{M}_{\odot }$ and ${1.2}_{-0.6}^{+1.4}\times {10}^{14}\,{M}_{\odot }$. We estimate the projected separation between the two subclusters to be ${924}_{-206}^{+243}\,\mathrm{kpc}$. We perform a clustering analysis of spectroscopically confirmed cluster member galaxies and estimate the line-of-sight velocity difference between the two subclusters to be $92\pm 164\,\mathrm{km}\,{{\rm{s}}}^{-1}$. We further motivate, discuss, and analyze the merger scenario through an analysis of the 42 ks of Chandra/ACIS-I and JVLA/C and D array polarization data. The X-ray surface brightness profile reveals a merging gas-core reminiscent of the Bullet Cluster. The global X-ray luminosity in the 0.5–7.0 keV band is $1.7\pm 0.1\times {10}^{44}\,\mathrm{erg}\,{{\rm{s}}}^{-1}$ and the global X-ray temperature is 4.90 ± 0.13 keV. The radio relics are polarized up to $40 \% $, and along with the masses, velocities, and positions of the two subclusters, we input these quantities into a Monte Carlo dynamical analysis and estimate the merger velocity at pericenter to be ${1800}_{-300}^{+400}\,\mathrm{km}\,{{\rm{s}}}^{-1}$. This is a lower-mass version of the Bullet Cluster and therefore may prove useful in testing alternative models of dark matter (DM). We do not find significant offsets between DM and galaxies, but the uncertainties are large with the current lensing data. Furthermore, in the east, the BCG is offset from other luminous cluster galaxies, which poses a puzzle for defining DM–galaxy offsets.},
doi = {10.3847/1538-4357/aa667f},
journal = {The Astrophysical Journal (Online)},
number = 2,
volume = 838,
place = {United States},
year = {Fri Mar 31 00:00:00 EDT 2017},
month = {Fri Mar 31 00:00:00 EDT 2017}
}
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MC^2: Mapping the Dark Matter Distribution of the "Toothbrush" Cluster RX J0603.3+4214 with Hubble Space Telescope and Subaru Weak-lensing
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The Case for Electron Re-Acceleration at Galaxy Cluster Shocks
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The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections
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Diffuse Radio Emission from Galaxy Clusters
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Merging Cluster Collaboration: Optical and Spectroscopic Survey of a Radio-selected Sample of 29 Merging Galaxy Clusters
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Multi-phenomena Modeling of the New Bullet-like Cluster ZwCl 008.8+52 Using N -body/Hydrodynamical Simulations
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Merging Cluster Collaboration: A Panchromatic Atlas of Radio Relic Mergers
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Polarization of radio relics in galaxy clusters
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Dark matter dynamics in Abell 3827: New data consistent with standard cold dark matter
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Brightest Cluster Galaxy Alignments in Merging Clusters
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Evidence for a Merger-induced Shock Wave in ZwCl 0008.8+5215 with Chandra and Suzaku
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Simulated Analogs of Merging Galaxy Clusters Constrain the Viewing Angle
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Precise Mass Determination of SPT-CL J2106-5844, the Most Massive Cluster at z > 1
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Dynamical Properties of Merging Galaxy Clusters from Simulated Analogs
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Merging Cluster Collaboration: A Panchromatic Atlas of Radio Relic Mergers
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Brightest Cluster Galaxy Alignments in Merging Clusters
text, January 2018
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- arXiv