The interplay between feedback, accretion, transport and winds in setting gas-phase metal distribution in galaxies

Abstract

The recent decade has seen an exponential growth in spatially-resolved metallicity measurements in the interstellar medium (ISM) of galaxies. To first order, these measurements are characterised by the slope of the radial metallicity profile, known as the metallicity gradient. In this work, we model the relative role of star formation feedback, gas transport, cosmic gas accretion, and galactic winds in driving radial metallicity profiles and setting the mass-metallicity gradient relation (MZGR). We include a comprehensive treatment of these processes by including them as sources that supply mass, metals, and energy to marginally unstable galactic discs in pressure and energy balance. We show that both feedback and accretion that can drive turbulence and enhance metal-mixing via diffusion are crucial to reproduce the observed MZGR in local galaxies. Metal transport also contributes to setting metallicity profiles, but it is sensitive to the strength of radial gas flows in galaxies. While the mass loading of galactic winds is important to reproduce the mass metallicity relation (MZR), we find that metal mass loading is more important to reproducing the MZGR. Specifically, our model predicts preferential metal enrichment of galactic winds in low-mass galaxies. This conclusion is robust against our adopted scaling of the wind mass-loading factor, uncertainties in measured wind metallicities, and systematics due to metallicity calibrations. Overall, we find that at $z\sim 0$, galactic winds and metal transport are more important in setting metallicity gradients in low-mass galaxies whereas star formation feedback and gas accretion dominate setting metallicity gradients in massive galaxies.

21 pages (+ appendix), 11 figures, 4 tables. Accepted by MNRAS

References in corpus (97)

• Array Programming with NumPy
• 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
• Overview of the SDSS-IV MaNGA Survey: Mapping Nearby Galaxies at Apache Point Observatory
• 3D-HST+CANDELS: The Evolution of the Galaxy Size-Mass Distribution since $z=3$
• The Circumgalactic Medium
• Formation of Massive Galaxies at High Redshift: Cold Streams, Clumpy Disks and Compact Spheroids
• From rings to bulges: evidence for rapid secular galaxy evolution at z~2 from integral field spectroscopy in the SINS survey
• Combined CO & Dust Scaling Relations of Depletion Time and Molecular Gas Fractions with Cosmic Time, Specific Star Formation Rate and Stellar Mass
• The KMOS^3D Survey: design, first results, and the evolution of galaxy kinematics from 0.7<z<2.7
• Understanding Galaxy Evolution through Emission Lines
• The SAMI Galaxy Survey: instrument specification and target selection
• The Origin of the Galaxy Mass-Metallicity Relation and Implications for Galactic Outflows
• The Atomic to Molecular Transition in Galaxies. II: HI and H_2 Column Densities
• Rapid formation of exponential disks and bulges at high redshift from the dynamical evolution of clump cluster and chain galaxies
• Momentum Injection by Supernovae in the Interstellar Medium
• COLD GASS, an IRAM Legacy Survey of Molecular Gas in Massive Galaxies: II. The non-universality of the Molecular Gas Depletion Timescale
• Turbulent Heating in Galaxy Clusters Brightest in X-rays
• What is Driving the HI Velocity Dispersion?
• CMasher: Scientific colormaps for making accessible, informative and 'cmashing' plots
• The Universal Relation of Galactic Chemical Evolution: The Origin of the Mass-Metallicity Relation
• Four phases of angular-momentum buildup in high-z galaxies: from cosmic-web streams through an extended ring to disc and bulge
• New fully empirical calibrations of strong-line metallicity indicators in star forming galaxies
• The COS-Halos Survey: Metallicities in the Low-Redshift Circumgalactic Medium
• The Metallicity of Galaxy Disks: Infall versus Outflow
• Accretion of gas onto nearby spiral galaxies
• SDSS-IV MaNGA: The Impact of Diffuse Ionized Gas on Emission-line Ratios, Interpretation of Diagnostic Diagrams, and Gas Metallicity Measurements
• Metallicity gradients in local field star-forming galaxies: Insights on inflows, outflows, and the coevolution of gas, stars and metals
• A Superbubble Feedback Model for Galaxy Simulations
• Superbubbles in the Multiphase ISM and the Loading of Galactic Winds
• Mapping metallicity variations across nearby galaxy disks
• Unstable disks at high redshift: Evidence for smooth accretion in galaxy formation
• The KMOS^3D Survey: data release and final survey paper
• IZI: Inferring the Gas Phase Metallicity (Z) and Ionization Parameter (q) of Ionized Nebulae using Bayesian Statistics
• z~2: An Epoch of Disk Assembly
• Automated Mining of the ALMA Archive in the COSMOS Field (A3COSMOS): II. Cold Molecular Gas Evolution out to Redshift 6
• First results from SMAUG: Characterization of Multiphase Galactic Outflows from a Suite of Local Star-Forming Galactic Disk Simulations
• Stochastic modelling of star-formation histories II: star-formation variability from molecular clouds and gas inflow
• The equilibrium view on dust and metals in galaxies: Galactic outflows drive low dust-to-metal ratios in dwarf galaxies
• Constructing Merger Trees that Mimic N-Body Simulations
• Do galaxy global relationships emerge from local ones? The SDSS IV MaNGA surface mass density-metallicity relation
• The KMOS Redshift One Spectroscopic Survey (KROSS): the origin of disk turbulence in z~0.9 star-forming galaxies
• Bar quenching in gas-rich galaxies
• Gas accretion and galactic fountain flows in the Auriga cosmological simulations: angular momentum and metal re-distribution
• GHASP : An Halpha kinematic survey of 203 spiral and irregular galaxies - VII. Revisiting the analysis of Halpha data cubes for 97 galaxies
• The KLEVER Survey: Spatially resolved metallicity maps and gradients in a sample of 1.2 < z < 2.5 lensed galaxies
• A deep X-ray observation of M82 with XMM-Newton
• Biases in metallicity measurements from global galaxy spectra: the effects of flux-weighting and diffuse ionized gas contamination
• The Chemical Evolution Carousel of Spiral Galaxies: Azimuthal Variations of Oxygen Abundance in NGC1365
• Direct Detection of Black Hole-Driven Turbulence in the Centers of Galaxy Clusters
• New Perspective on Galaxy Outflows From the First Detection of Both Intrinsic and Traverse Metal-Line Absorption
• The physics of gas phase metallicity gradients in galaxies
• What controls the ionized gas turbulent motions in dwarf galaxies?
• From 'bathtub' galaxy evolution models to metallicity gradients
• The Effects of Diffuse Ionized Gas and Spatial Resolution on Metallicity Gradients: TYPHOON Two-Dimensional Spectrophotometry of M83
• Distinguishing Mergers and Disks in High Redshift Observations of Galaxy Kinematics
• Evidence for supernova feedback sustaining gas turbulence in nearby star-forming galaxies
• The VLT SINFONI Mg ii Program for Line Emitters (SIMPLE) II: background quasars probing z $\sim$ 1 galactic winds
• The effect of differential galactic winds on the chemical evolution of galaxies
• Being KLEVER at cosmic noon: ionised gas outflows are inconspicuous in low-mass star-forming galaxies but prominent in massive AGN hosts
• The chemical evolution of local star forming galaxies: Radial profiles of ISM metallicity, gas mass, and stellar mass and constraints on galactic accretion and winds
• The chemical evolution of a Milky Way-like galaxy: the importance of a cosmologically motivated infall law
• How to get cool in the heat: comparing analytic models of hot, cold, and cooling gas in haloes and galaxies with EAGLE
• Systematic difference between ionized and molecular gas velocity dispersion in $z\sim 1-2$ disks and local analogues
• Early results from GLASS-JWST. IV: Spatially resolved metallicity in a low-mass $z\sim 3$ galaxy with NIRISS
• Mixing and transport of metals by gravitational instability-driven turbulence in galactic discs
• NIHAO XIX: How supernova feedback shapes the galaxy baryon cycle
• Resolved galaxy scaling relations in the EAGLE simulation: star formation, metallicity and stellar mass on kpc scales
• Galactic inflow and wind recycling rates in the EAGLE simulations
• The role of galactic dynamics in shaping the physical properties of giant molecular clouds in Milky Way-like galaxies
• Alfvenic Turbulence Beyond the Ambipolar Diffusion Scale
• ALMA hints at the presence of turbulent disk galaxies at z > 5
• Cold gas disks in main-sequence galaxies at cosmic noon: Low turbulence, flat rotation curves, and disk-halo degeneracy
• The SAMI Galaxy Survey: Gas velocity dispersions in low-$z$ star-forming galaxies and the drivers of turbulence
• The Relationship Between Galaxy ISM and Circumgalactic Gas Metallicities
• The DUVET Survey: Direct $T_e$-based metallicity mapping of metal-enriched outflows and metal-poor inflows in Mrk 1486
• What drives the velocity dispersion of ionized gas in star-forming galaxies?
• The role of gas infall in the evolution of disc galaxies
• The metallicity of galactic winds
• Dust depletion of metals from local to distant galaxies I: Peculiar nucleosynthesis effects and grain growth in the ISM
• The Effects of radial inflow of gas and galactic fountains on the chemical evolution of M31
• Testing Star Formation Laws on Spatially Resolved Regions in a $z\approx 4.3$ Starburst Galaxy
• The Origin of Exponential Star-forming Disks
• Filaments and striations: anisotropies in observed, supersonic, highly-magnetised turbulent clouds
• Bar effect on gas-phase abundance gradients. II. Luminosity-dependent flattening
• Metallicity Gradient of Barred Galaxies with TYPHOON
• The Gas-phase Metallicity Profiles of Star-forming Galaxies in the Modified Accretion Disk Framework
• Quantifying the effects of spatial resolution and noise on galaxy metallicity gradients
• A geostatistical analysis of multiscale metallicity variations in galaxies [I]: Introduction and comparison of high-resolution metallicity maps to an analytic metal transport model
• Accretion driven turbulence in filaments II: Effects of self-gravity
• New Analytic Solutions for Galaxy Evolution II: Wind Recycling, Galactic Fountains and Late-Type Galaxies
• Extreme Variation in Star Formation Efficiency Across a Compact, Starbursting Disk Galaxy
• The major mechanism to drive turbulence in star-forming galaxies
• SDSS-IV MaNGA: the chemical co-evolution of gas and stars in spiral galaxies
• Reconstructing three-dimensional densities from two-dimensional observations of molecular gas
• Oxygen Loss from Simulated Galaxies and the Metal Flow Main Sequence: Predicting the Dependence on Mass and Environment
• Constraining gas metal mixing strength in simulations using observations of the Milky Way's disc

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• Recovering the properties of the interstellar medium through integrated spectroscopy: application to the z~0 ECO volume-limited star-forming galaxy sample
• Chemical enrichment in LINERs from MaNGA. I. Tracing Oxygen and Nitrogen Nuclear Abundances in LINERs with Varied Ionizing Sources
• QED V: Variations in metal loading of galactic winds with element nucleosynthetic origin