Cosmic distribution of highly ionized metals and their physical conditions in the EAGLE simulations

Abstract

We study the distribution and evolution of highly ionised intergalactic metals in the Evolution and Assembly of Galaxies and their Environment (EAGLE) cosmological, hydrodynamical simulations. EAGLE has been shown to reproduce a wide range of galaxy properties while its subgrid feedback was calibrated without considering gas properties. We compare the predictions for the column density distribution functions (CDDFs) and cosmic densities of SiIV, CIV, NV, OVI and NeVIII absorbers with observations at redshift z = 0 to ~ 6 and find reasonable agreement, although there are some differences. We show that the typical physical densities of the absorbing gas increase with column density and redshift, but decrease with the ionization energy of the absorbing ion. The typical metallicity increases with both column density and time. The fraction of collisionally ionized metal absorbers increases with time and ionization energy. While our results show little sensitivity to the presence or absence of AGN feedback, increasing/decreasing the efficiency of stellar feedback by a factor of two substantially decreases/increases the CDDFs and the cosmic densities of the metal ions. We show that the impact of the efficiency of stellar feedback on the CDDFs and cosmic densities is largely due to its effect on the metal production rate. However, the temperatures of the metal absorbers, particularly those of strong OVI, are directly sensitive to the strength of the feedback.

25 pages, 20 figures, 2 tables; Accepted for publication in MNRAS after minor changes

References in corpus (25)

• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• The EAGLE simulations of galaxy formation: calibration of subgrid physics and model variations
• Properties of galaxies reproduced by a hydrodynamic simulation
• The effect of photo-ionization on the cooling rates of enriched, astrophysical plasmas
• Chemical enrichment in cosmological, smoothed particle hydrodynamics simulations
• Cosmological Simulations of Intergalactic Medium Enrichment from Galactic Outflows
• Mass, Metal, and Energy Feedback in Cosmological Simulations
• Baryon effects on the internal structure of LCDM halos in the EAGLE simulations
• A High-Resolution Survey of Low-Redshift QSO Absorption Lines: Statistics and Physical Conditions of O VI Absorbers
• Evolution of the Intergalactic Opacity: Implications for the Ionizing Background, Cosmic Star Formation, and Quasar Activity
• The Low-z Intergalactic Medium. III. HI and Metal Absorbers at z<0.4
• Metal-line absorption around $z\approx$2.4 star-forming galaxies in the Keck Baryonic Structure Survey
• A downturn in intergalactic CIV as redshift 6 is approached
• Through Thick and Thin - HI Absorption in Cosmological Simulations
• The Nature and Origin of Low-Redshift O VI Absorbers
• The Properties of Low Redshift Intergalactic O VI Absorbers Determined from High S/N Observations of 14 QSOs with the Cosmic Origins Spectrograph
• Metallicity of the intergalactic medium using pixel statistics: IV. Oxygen
• The Enrichment History of Baryons in the Universe
• Non-equilibrium chemistry and cooling in the diffuse interstellar medium - II. Shielded gas
• Tracing the Cosmic Metal Evolution in the Low-Redshift Intergalactic Medium
• Absorption signatures of warm-hot gas at low redshift: OVI
• A STIS Survey for OVI Absorption Systems at 0.12 < z < 0.5 I.: The Statistical Properties of Ionized Gas
• Properties of QSO Metal Line Absorption Systems at High Redshifts: Nature and Evolution of the Absorbers and New Evidence on Escape of Ionizing Radiation from Galaxies
• A Deep Search For Faint Galaxies Associated With Very Low-redshift C IV Absorbers: II. Program Design, Absorption-line Measurements, and Absorber Statistics
• Simulating the Carbon Footprint of Galactic Halos

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• The quenching and morphological evolution of central galaxies is facilitated by the feedback-driven expulsion of circumgalactic gas
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• A Deep Search For Faint Galaxies Associated With Very Low-redshift C IV Absorbers: III. The Mass- and Environment-dependent Circumgalactic Medium
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• Flickering AGN can explain the strong circumgalactic O VI observed by COS-Halos
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• The COS CGM Compendium. III: Metallicity and Physical Properties of the Cool Circumgalactic Medium at z<1
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• Testing the effect of galactic feedback on the IGM at z ~ 6 with metal-line absorbers
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• The Physical Origins of the Identified and Still Missing Components of the Warm-Hot Intergalactic Medium: Insights from Deep Surveys in the Field of Blazar 1ES1553+113
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• Evolution of CIV Absorbers I. The Cosmic Incidence
• X-ray emission from warm-hot intergalactic medium: the role of resonantly scattered cosmic X-ray background
• The Faint Host Galaxies of C IV Absorbers at z > 5
• Hot WHIM counterparts of FUV OVI absorbers: Evidence in the line-of-sight towards quasar 3C 273
• The Cosmic Ultraviolet Baryon Survey (CUBS) VI: Connecting Physical Properties of the Cool Circumgalactic Medium to Galaxies at $z\approx 1$
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• The metallicity distribution of HI systems in the EAGLE cosmological simulation
• The complementary roles of feedback and mergers in building the gaseous halo and the X-ray corona of Milky Way-sized galaxies
• The Bimodal Absorption System Imaging Campaign (BASIC) I. A Dual Population of Low-metallicity Absorbers at z $<1$
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• Transverse clues on the kpc-scale structure of the circumgalactic medium as traced by C IV absorption
• X-ray Absorption Lines in the Warm-Hot Intergalactic Medium: Probing Chandra observations with the CAMEL simulations
• Exploring Damped Lyman-$\alpha$ System Host Galaxies using Gamma-ray Bursts
• The warm-hot intergalactic medium in inter-cluster filaments -- A forecast for HUBS observations based on eRASS1 superclusters
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