The impact of stellar and AGN feedback on halo-scale baryonic and dark matter accretion in the EAGLE simulations

Abstract

We use the EAGLE suite of hydrodynamical simulations to analyse accretion rates (and the breakdown of their constituent channels) onto haloes over cosmic time, comparing the behaviour of baryons and dark matter (DM). We also investigate the influence of sub-grid baryon physics on halo-scale inflow, specifically the consequences of modelling radiative cooling, as well as feedback from stars and active galactic nuclei (AGN). We find that variations in halo baryon fractions at fixed mass (particularly their circum-galactic medium gas content) are very well correlated with variations in the baryon fraction of accreting matter, which we show to be heavily suppressed by stellar feedback in low-mass haloes, $M_{\mathrm{halo}}\lesssim 10^{11.5}{M}_{\odot }$. Breaking down accretion rates into first infall, recycled, transfer and merger components, we show that baryons are much more likely to be smoothly accreted than to have originated from mergers when compared to DM, finding (averaged across halo mass) a merger contribution of $\approx 6\%$ for baryons, and $\approx 15\%$ for DM at $z\approx 0$. We also show that the breakdown of inflow into different channels is strongly dependent on sub-grid physics, particularly the contribution of recycled accretion (accreting matter that has been previously ejected from progenitor haloes). Our findings highlight the dual role that baryonic feedback plays in regulating the evolution of galaxies and haloes: by (i) directly removing gas from haloes, and (ii) suppressing gas inflow to haloes.

Final version accepted for publication by MNRAS. 24 pages, 10 figures

References in corpus (25)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• Cold streams in early massive hot haloes as the main mode of galaxy formation
• The EAGLE simulations of galaxy formation: calibration of subgrid physics and model variations
• Chemical enrichment in cosmological, smoothed particle hydrodynamics simulations
• The dark nemesis of galaxy formation: why hot haloes trigger black hole growth and bring star formation to an end
• Natural Downsizing in Hierarchical Galaxy Formation
• The impact of feedback on cosmological gas accretion
• The growth of dark matter halos: evidence for significant smooth accretion
• The baryon fraction of LambdaCDM haloes
• Star formation quenching in simulated group and cluster galaxies: When, how, and why?
• The flip-side of galaxy formation: A combined model of Galaxy Formation and Cluster Heating
• MusE GAs FLOw and Wind (MEGAFLOW) II. A study of gas accretion around $z\approx 1$ star-forming galaxies with background quasars
• Quasars Probing Galaxies: I. Signatures of Gas Accretion at Redshift Approximately 0.2
• Smith's Cloud: A High-velocity Cloud Colliding with the Milky Way
• Hunting for Galaxies and Halos in simulations with VELOCIraptor
• Kinematics of Circumgalactic Gas: Feeding Galaxies and Feedback
• The environmental dependence of gas accretion onto galaxies: quenching satellites through starvation
• The properties of "dark" ΛCDM halos in the Local Group
• Disruption of satellite galaxies in simulated groups and clusters: the roles of accretion time, baryons, and pre-processing
• Comparing galaxy formation in semi-analytic models and hydrodynamical simulations
• Observational signatures of a warped disk associated with cold-flow accretion
• Galactic inflow and wind recycling rates in the EAGLE simulations
• The Relationship Between Galaxy ISM and Circumgalactic Gas Metallicities
• The similarity of observed X-ray coronae associated with L* disc and elliptical galaxies

Cited by in corpus (32)

• Hydrodynamical simulations of the galaxy population: enduring successes and outstanding challenges
• A massive galaxy that formed its stars at $z\sim 11$
• Feedback reshapes the baryon distribution within haloes, in halo outskirts, and beyond: the closure radius from dwarfs to massive clusters
• Galactic inflow and wind recycling rates in the EAGLE simulations
• First results from SMAUG: The need for preventative stellar feedback and improved baryon cycling in semi-analytic models of galaxy formation
• Quenching and morphological evolution due to circumgalactic gas expulsion in a simulated galaxy with a controlled assembly history
• An orbital perspective on the starvation, stripping, and quenching of satellite galaxies in the EAGLE simulations
• Revealing the physical properties of gas accreting to haloes in the EAGLE simulations
• How gas flows shape the stellar-halo mass relation in the EAGLE simulation
• The physical drivers of the atomic hydrogen-halo mass relation
• The physical drivers of gas turbulence in simulated disc galaxies
• EAGLE-Auriga: effects of different subgrid models on the baryon cycle around Milky Way-mass galaxies
• CLEAR: The Evolution of Spatially Resolved Star Formation in Galaxies between $0.5\lesssim z\lesssim 1.7$ using H$\alpha$ Emission Line Maps
• The hot circumgalactic media of massive cluster satellites in the TNG-Cluster simulation: existence and detectability
• Baryonic mass budgets for haloes in the EAGLE simulation, including ejected and prevented gas
• A Multiwavelength Study of ELAN Environments (AMUSE${}^2$). Mass budget, satellites spin alignment and gas infall in a massive $z\sim 3$ quasar host halo
• Connecting cosmological accretion to strong Lyman-alpha absorbers
• The present-day gas content of simulated field dwarf galaxies
• Mass accretion rates of clusters of galaxies: CIRS and HeCS
• Quenching of Massive Disk Galaxies in the IllustrisTNG Simulation
• Where infall meets outflows: turbulent dissipation probed by CH${}^{+}$ and Ly$\alpha$ in the starburst/AGN galaxy group SMM J02399$-$0136 at z$\sim$2.8
• The distribution and properties of DLAs at z $\le$ 2 in the EAGLE simulations
• Clouds accreting from the IGM are not able to feed the star formation of low-redshift disc galaxies
• The variation of the gas content of galaxy groups and pairs compared to isolated galaxies
• The relationship between cluster environment and molecular gas content of star-forming galaxies in the EAGLE simulation
• Anatomy of galactic star formation history: Roles of different modes of gas accretion, feedback, and recycling
• Extracting Galaxy Merger Timescales II: A new fitting formula
• Fast radio bursts as probes of feedback from active galactic nuclei
• The dawn is quiet here: Rise in [$\alpha$/Fe] is a signature of massive gas accretion that fueled proto-Milky Way
• Performance Enhancement of Tree-based Friends-of-friend Galaxy-finder for High-resolution Simulations of Galaxy Formation
• The contribution of stars, dust, neutral gas and supermassive black holes in galaxies to the cosmic baryon inventory
• Galaxy mergers can initiate quenching by unlocking an AGN-driven transformation of the baryon cycle