Baryonic mass budgets for haloes in the EAGLE simulation, including ejected and prevented gas

Abstract

Feedback processes are expected to shape galaxy evolution by ejecting gas from galaxies and their associated dark matter haloes, and also by preventing diffuse gas from ever being accreted. We present predictions from the EAGLE simulation project for the mass budgets associated with "ejected" and "prevented" gas, as well as for ejected metals. We find that most of the baryons that are associated with haloes of mass $10^{11}<M_{200}/{\mathrm{M}}_{\odot }<10^{13}$ at $z=0$ have been ejected beyond the virial radius after having been accreted. When the gas ejected from satellites (and their progenitors) is accounted for, the combined ejected mass represents half of the total baryon budget even in the most massive simulated galaxy clusters ($M_{200}\approx 10^{14.5}{\mathrm{M}}_{\odot }$), with the consequence that the total baryon budget exceeds the cosmic average if ejected gas is included. We find that gas is only prevented from being accreted onto haloes for $M_{200}<10^{12}{\mathrm{M}}_{\odot }$, and that this component accounts for about half the total baryon budget for $M_{200}<10^{11}{\mathrm{M}}_{\odot }$, with ejected gas making up most of the remaining half. For metals, most of the mass that is not locked into stars has been ejected beyond the virial radius, at least for $M_{200}<10^{13}{\mathrm{M}}_{\odot }$. Finally, within the virial radius we find that most of the mass in the circum-galactic medium (CGM) has not passed through the ISM of a progenitor galaxy, for all halo masses and redshifts. About half of the CGM within half the virial radius has passed through the ISM in the past, however.

arXiv commentMNRAS Accepted, 10 pages

References in corpus (44)

• Planck 2013 results. XVI. Cosmological parameters
• The cosmological simulation code GADGET-2
• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• Profiles of dark haloes: evolution, scatter, and environment
• The EAGLE simulations of galaxy formation: calibration of subgrid physics and model variations
• Concentrations of Dark Halos from their Assembly Histories
• Simba: Cosmological Simulations with Black Hole Growth and Feedback
• First Results from the TNG50 Simulation: Galactic outflows driven by supernovae and black hole feedback
• First Results from the TNG50 Simulation: The evolution of stellar and gaseous disks across cosmic time
• On the relation between the Schmidt and Kennicutt-Schmidt star formation laws and its implications for numerical simulations
• Gusty, gaseous flows of FIRE: galactic winds in cosmological simulations with explicit stellar feedback
• Star formation thresholds and galaxy edges: why and where
• On the evolution of the HI column density distribution in cosmological simulations
• Feedback and Recycled Wind Accretion: Assembling the z=0 Galaxy Mass Function
• The EAGLE simulations of galaxy formation: public release of halo and galaxy catalogues
• The Cosmic Baryon Cycle and Galaxy Mass Assembly in the FIRE Simulations
• A Budget and Accounting of Metals at z~0: Results from the COS-Halos Survey
• The Cosmic Baryon and Metal Cycles
• The rates and modes of gas accretion on to galaxies and their gaseous haloes
• The Baryonic Assembly of Dark Matter Halos
• The accretion history of dark matter halos III: A physical model for the concentration-mass relation
• Simulations of the galaxy population constrained by observations from z=3 to the present day: implications for galactic winds and the fate of their ejecta
• SZ effects in the Magneticum Pathfinder Simulation: Comparison with the Planck, SPT, and ACT results
• The Origins of the Circumgalactic Medium in the FIRE Simulations
• In-N-Out: the gas cycle from dwarfs to spiral galaxies
• The quenching and morphological evolution of central galaxies is facilitated by the feedback-driven expulsion of circumgalactic gas
• Exploring the effects of galaxy formation on matter clustering through a library of simulation power spectra
• Why stellar feedback promotes disc formation in simulated galaxies
• Galactic outflow rates in the EAGLE simulations
• The drop in the cosmic star formation rate below redshift 2 is caused by a change in the mode of gas accretion and by AGN feedback
• Gas accretion and galactic fountain flows in the Auriga cosmological simulations: angular momentum and metal re-distribution
• Feedback from supermassive black holes transforms centrals into passive galaxies by ejecting circumgalactic gas
• The Two-Halo Term in Stacked Thermal Sunyaev-Zel'dovich Measurements: Implications for Self-Similarity
• Comparing galaxy formation in semi-analytic models and hydrodynamical simulations
• Galactic inflow and wind recycling rates in the EAGLE simulations
• The Low Redshift Circumgalactic Medium in Simba
• The impact of stellar and AGN feedback on halo-scale baryonic and dark matter accretion in the EAGLE simulations
• The impact of feedback and the hot halo on the rates of gas accretion onto galaxies
• Detection of missing baryons in galaxy groups with kinetic Sunyaev-Zel'dovich effect
• Properties of the ionized CGM and IGM: a comparison of galaxy formation models via the Sunyaev-Zel'dovich effect
• The Atacama Cosmology Telescope: Probing the Baryon Content of SDSS DR15 Galaxies with the Thermal and Kinematic Sunyaev-Zel'dovich Effects
• Probing hot gas around luminous red galaxies through the Sunyaev-Zel'dovich effect
• Most of the cool CGM of star-forming galaxies is not produced by supernova feedback
• Constraints on circum-galactic media from Sunyaev-Zel'dovich effects and X-ray data

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• Feedback reshapes the baryon distribution within haloes, in halo outskirts, and beyond: the closure radius from dwarfs to massive clusters
• Understanding the relation between thermal Sunyaev-Zeldovich decrement and halo mass using the SIMBA and TNG simulations
• Diffstar: A Fully Parametric Physical Model for Galaxy Assembly History
• An Atlas of Gas Motions in the TNG-Cluster Simulation: from Cluster Cores to the Outskirts
• The present-day gas content of simulated field dwarf galaxies
• Characterizing the Circumgalactic Medium of Quasars at z $\sim$ 2.2 through H$\alpha$ and Ly$\alpha$ Emission
• Cosmic metal invaders: Intergalactic OVII as a tracer of the warm-hot intergalactic medium within cosmic filaments in the EAGLE simulation
• Cosmological feedback from a halo assembly perspective
• Anatomy of galactic star formation history: Roles of different modes of gas accretion, feedback, and recycling
• Star formation and stellar & AGN feedback in the absence of accretion, not gas stripping, set the quenching timescale in satellite galaxies
• Stellar-gas kinematic misalignments in EAGLE: lifetimes and longevity of misaligned galaxies
• FLAMINGO: Galaxy formation and feedback effects on the gas density and velocity fields
• QSO MUSEUM III: the circumgalactic medium in Ly$\alpha$ emission around 120 $z\sim 3$ quasars covering the SDSS parameter space. Witnessing the instantaneous AGN feedback on halo scales
• ARCHITECTS I: Impact of subgrid physics on the simulated properties of the circumgalactic medium