The Cluster-EAGLE project: global properties of simulated clusters with resolved galaxies

Barnes, David J.; Kay, Scott T.; Bahé, Yannick M.; Dalla Vecchia, Claudio; McCarthy, Ian G.; Schaye, Joop; Bower, Richard G.; Jenkins, Adrian; Thomas, Peter A.; Schaller, Matthieu; Crain, Robert A.; Theuns, Tom; White, Simon D.M.

doi:10.1093/mnras/stx1647

The Cluster-EAGLE project: global properties of simulated clusters with resolved galaxies

Barnes, David J.; Kay, Scott T.; Bahé, Yannick M.; Dalla Vecchia, Claudio; McCarthy, Ian G.; Schaye, Joop; Bower, Richard G.; Jenkins, Adrian; Thomas, Peter A.; Schaller, Matthieu; Crain, Robert A.; Theuns, Tom; White, Simon D.M.

Authors

David J. Barnes

Scott T. Kay

Yannick M. Bahé

Claudio Dalla Vecchia

Ian G. McCarthy

Joop Schaye

Richard G. Bower

Professor Adrian Jenkins a.r.jenkins@durham.ac.uk
Professor

Peter A. Thomas

Dr Matthieu Schaller matthieu.schaller@durham.ac.uk
Academic Visitor

Robert A. Crain

Professor Tom Theuns tom.theuns@durham.ac.uk
Professor

Simon D.M. White

Abstract

We introduce the Cluster-EAGLE (C-EAGLE) simulation project, a set of cosmological hydrodynamical zoom simulations of the formation of 30 galaxy clusters in the mass range of 1014 < M200/M⊙ < 1015.4 that incorporates the Hydrangea sample of Bahé et al. (2017). The simulations adopt the state-of-the-art EAGLE galaxy formation model, with a gas particle mass of 1.8 × 106 M⊙ and physical softening length of 0.7 kpc. In this paper, we introduce the sample and present the low-redshift global properties of the clusters. We calculate the X-ray properties in a manner consistent with observational techniques, demonstrating the bias and scatter introduced by using estimated masses. We find the total stellar content and black hole masses of the clusters to be in good agreement with the observed relations. However, the clusters are too gas rich, suggesting that the active galactic nucleus (AGN) feedback model is not efficient enough at expelling gas from the high-redshift progenitors of the clusters. The X-ray properties, such as the spectroscopic temperature and the soft-band luminosity, and the Sunyaev–Zel'dovich properties are in reasonable agreement with the observed relations. However, the clusters have too high central temperatures and larger-than-observed entropy cores, which is likely driven by the AGN feedback after the cluster core has formed. The total metal content and its distribution throughout the intracluster medium are a good match to the observations.

Citation

Barnes, D. J., Kay, S. T., Bahé, Y. M., Dalla Vecchia, C., McCarthy, I. G., Schaye, J., …White, S. D. (2017). The Cluster-EAGLE project: global properties of simulated clusters with resolved galaxies. Monthly Notices of the Royal Astronomical Society, 471(1), 1088-1106. https://doi.org/10.1093/mnras/stx1647

Journal Article Type	Article
Acceptance Date	Jun 28, 2017
Online Publication Date	Jun 30, 2017
Publication Date	Oct 11, 2017
Deposit Date	Oct 12, 2017
Publicly Available Date	Oct 12, 2017
Journal	Monthly Notices of the Royal Astronomical Society
Print ISSN	0035-8711
Electronic ISSN	1365-2966
Publisher	Royal Astronomical Society
Peer Reviewed	Peer Reviewed
Volume	471
Issue	1
Pages	1088-1106
DOI	https://doi.org/10.1093/mnras/stx1647

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This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.