Journal article
The formation of hot gaseous haloes around galaxies
CA Correa, J Schaye, JSB Wyithe, AR Duffy, T Theuns, RA Crain, RG Bower
Monthly Notices of the Royal Astronomical Society | OXFORD UNIV PRESS | Published : 2018
Abstract
We use a suite of hydrodynamical cosmological simulations from the Evolution and Assembly of GaLaxies and their Environments (EAGLE) project to investigate the formation of hot hydrostatic haloes and their dependence on feedback mechanisms. We find that the appearance of a strong bimodality in the probability density function of the ratio of the radiative cooling and dynamical times for halo gas provides a clear signature of the formation of a hot corona. Haloes of total mass 1011.5-1012M⊙ develop a hot corona independent of redshift, at least in the interval z = 0-4, where the simulation has sufficiently good statistics. We analyse the build-up of the hot gas mass in the halo, Mhot, as a fu..
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Awarded by Seventh Framework Programme
Funding Acknowledgements
We are grateful to the referee for fruitful comments that substantially improved the original manuscript. This work used the DiRAC Data Centric system at Durham University, operated by the Institute for Computational Cosmology on behalf of the STFC DiRAC HPC Facility (www.dirac.ac.uk). This equipment was funded by BIS National E-infrastructure capital grant ST/K00042X/1, STFC capital grant ST/H008519/1, and STFC DiRAC Operations grant ST/K003267/1 and Durham University. DiRAC is part of the National E-Infrastructure. The EAGLE simulations were performed using the DiRAC-2 facility at Durham, managed by the ICC, and the PRACE facility in France at TGCC, CEA, Bruyeres-le-Chatel. This work was supported by the European Research Council under the European Union's Seventh Framework Programme (FP7/2007-2013)/ERC Grant agreement 278594-GasAroundGalaxies and by the Netherlands Organisation for Scientific Research (NWO) through VICI grant 639.043.409. RAC is a Royal Society University Research Fellow. We also acknowledge support from STFC (ST/L00075X/1).