The physical drivers of gas turbulence in simulated disc galaxies

Abstract

We use the EAGLE cosmological simulations to study the evolution of the vertical velocity dispersion of cold gas, ${\sigma }_z$, in central disc galaxies and its connection to stellar feedback, gravitational instabilities, cosmological gas accretion and galaxy mergers. To isolate the impact of feedback, we analyse runs that turn off stellar and (or) AGN feedback in addition to a run that includes both. The evolution of ${\sigma }_z$ and its dependence on stellar mass and star formation rate in EAGLE are in good agreement with observations. Galaxies hosted by haloes of similar virial mass, ${\mathrm{M}}_{200}$, have similar ${\sigma }_z$ values even in runs where feedback is absent. The prevalence of local instabilities in discs is uncorrelated with ${\sigma }_z$ at low redshift and becomes only weakly correlated at high redshifts and in galaxies hosted by massive haloes. ${\sigma }_z$ correlates most strongly with the specific gas accretion rate onto the disc as well as with the degree of misalignment between the inflowing gas and the disc's rotation axis. These correlations are significant across all redshifts and halo masses, with misaligned accretion being the primary driver of high gas turbulence at redshifts $z\lesssim 1$ and for halo masses ${\mathrm{M}}_{200}\lesssim 10^{11.5}{\mathrm{M}}_{\odot }$. Galaxy mergers increase ${\sigma }_z$, but because they are rare in our sample, they play only a minor role in its evolution. Our results suggest that the turbulence of cold gas in EAGLE discs results from a complex interplay of different physical processes whose relative importance depends on halo mass and redshift.

arXiv comment22 pages, 12 figures. Accepted for publication in MNRAS

References in corpus (127)

• Galactic Stellar and Substellar Initial Mass Function
• 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
• Populating a cluster of galaxies - I. Results at z=0
• Modeling feedback from stars and black holes in galaxy mergers
• The Aquarius Project: the subhalos of galactic halos
• Control of star formation by supersonic turbulence
• The EAGLE simulations of galaxy formation: calibration of subgrid physics and model variations
• The SINS survey: SINFONI Integral Field Spectroscopy of z ~ 2 Star-forming Galaxies
• The effect of photo-ionization on the cooling rates of enriched, astrophysical plasmas
• PHIBSS: molecular gas content and scaling relations in z~1-3 normal star forming galaxies
• First Results from the TNG50 Simulation: The evolution of stellar and gaseous disks across cosmic time
• Environmental Effects on Late-Type Galaxies in Nearby Clusters
• Gas-regulation of galaxies: the evolution of the cosmic sSFR, the metallicity-mass-SFR relation and the stellar content of haloes
• Cosmological simulations of the growth of supermassive black holes and feedback from active galactic nuclei: method and tests
• Chemical enrichment in cosmological, smoothed particle hydrodynamics simulations
• The SINS survey of z~2 galaxy kinematics: properties of the giant star forming clumps
• On the relation between the Schmidt and Kennicutt-Schmidt star formation laws and its implications for numerical simulations
• HERACLES: The HERA CO-Line Extragalactic Survey
• The Impact of cold gas accretion above a mass floor on galaxy scaling relations
• The KMOS^3D Survey: design, first results, and the evolution of galaxy kinematics from 0.7<z<2.7
• The Sydney-AAO Multi-object Integral field spectrograph (SAMI)
• Dissipation in Compressible MHD Turbulence
• Simulating galactic outflows with thermal supernova feedback
• Science Objectives and Early Results of the DEEP2 Redshift Survey
• An Analytic Model for the Evolution of the Stellar, Gas, and Metal Content of Galaxies
• Kinetic Energy Decay Rates of Supersonic and Super-Alfvenic Turbulence in Star-Forming Clouds
• The EAGLE simulations of galaxy formation: public release of halo and galaxy catalogues
• SINFONI Integral Field Spectroscopy of z~2 UV-selected Galaxies: Rotation Curves and Dynamical Evolution
• The MOSFIRE Deep Evolution Field (MOSDEF) Survey: Rest-Frame Optical Spectroscopy for ~1500 H-Selected Galaxies at 1.37 < z < 3.8
• Evolution of galaxy stellar masses and star formation rates in the EAGLE simulations
• The Kiloparsec-Scale Kinematics of High-Redshift Star-Forming Galaxies
• Resolved Galaxies in the Hubble Ultra Deep Field: Star Formation in Disks at High Redshift
• Maximally Star-Forming Galactic Disks I. Starburst Regulation Via Feedback-Driven Turbulence
• A Unified Model for Galactic Discs: Star Formation, Turbulence Driving, and Mass Transport
• The SINS survey: modeling the dynamics of z~2 galaxies and the high-z Tully-Fisher relation
• Accretion-Driven Turbulence as Universal Process: Galaxies, Molecular Clouds, and Protostellar Disks
• Strongly baryon-dominated disk galaxies at the peak of galaxy formation ten billion years ago
• High-redshift clumpy discs and bulges in cosmological simulations
• The Origin of Disks and Spheroids in Simulated Galaxies
• The impact of angular momentum on black hole accretion rates in simulations of galaxy formation
• The ISM in distant star-forming galaxies: Turbulent pressure, fragmentation and cloud scaling relations in a dense gas disk at z=2.3
• Galaxies-Intergalactic Medium Interaction Calculation --I. Galaxy formation as a function of large-scale environment
• The Epoch of Disk Settling: z~1 to Now
• The SINS/zC-SINF survey of z~2 galaxy kinematics: SINFONI adaptive optics-assisted data and kiloparsec-scale emission line properties
• The KMOS Redshift One Spectroscopic Survey (KROSS): Dynamical properties, gas and dark matter fractions of typical z~1 star-forming galaxies
• The supernova rate-velocity dispersion relation in the interstellar medium
• The Stellar Mass Tully-Fisher Relation to z=1.2 from AEGIS
• Clumpy Galaxies in GOODS and GEMS: Massive Analogs of Local Dwarf Irregulars
• Evidence for strong dynamical evolution in disk galaxies through the last 11 Gyr. GHASP VIII: A local reference sample of rotating disk galaxies for high redshift studies
• A chronicle of galaxy mass assembly in the EAGLE simulation
• Is Turbulence in the Interstellar Medium Driven by Feedback or Gravity? An Observational Test
• The Evolution and Origin of Ionized Gas Velocity Dispersion from $z\sim 2.6$ to $z\sim 0.6$ with KMOS${}^{3D}$
• MASSIV: Mass Assembly Survey with SINFONI in VVDS - II. Kinematics and close environment classification
• Angular momentum evolution of galaxies in EAGLE
• Dynamical properties of AMAZE and LSD galaxies from gas kinematics and the Tully-Fisher relation at z~3
• Resolved spectroscopy of gravitationally lensed galaxies: global dynamics and star-forming clumps on ~100pc scales
• Clustered Supernovae Drive Powerful Galactic Winds After Super-Bubble Breakout
• The EAGLE simulations: atomic hydrogen associated with galaxies
• An analytic solution for the minimal bathtub toy model: challenges in the star-formation history of high-z galaxies
• Quantifying the impact of mergers on the angular momentum of simulated galaxies
• The effective stability parameter for two-component galactic discs: Is 1/Q ~ 1/Q_stars + 1/Q_gas ?
• Star formation quenching in simulated group and cluster galaxies: When, how, and why?
• The KMOS^3D Survey: data release and final survey paper
• Balance among gravitational instability, star formation, and accretion determines the structure and evolution of disk galaxies
• DYNAMO I: A Sample of Ha-Luminous Galaxies with Resolved Kinematics
• The Dawes Review 1: Kinematic studies of star-forming galaxies across cosmic time
• A simple and accurate approximation for the Q stability parameter in multi-component and realistically thick discs
• z~2: An Epoch of Disk Assembly
• High star formation rates as the origin of turbulence in early and modern disk galaxies
• On the Dynamics and Evolution of Gravitational Instability-Dominated Disks
• Stochastic modelling of star-formation histories II: star-formation variability from molecular clouds and gas inflow
• The origin of scatter in the star formation rate - stellar mass relation
• The Mass-Discrepancy Acceleration Relation: a Natural Outcome of Galaxy Formation in Cold Dark Matter halos
• The KMOS Deep Survey (KDS) I: dynamical measurements of typical star-forming galaxies at z $\simeq$ 3.5
• Gravitational Instabilities in Two-Component Galaxy Disks with Gas Dissipation
• The KMOS Redshift One Spectroscopic Survey (KROSS): the origin of disk turbulence in z~0.9 star-forming galaxies
• Non-linear violent disc instability with high Toomre's Q in high-redshift clumpy disc galaxies
• Is Main Sequence Galaxy Star Formation Controlled by Halo Mass Accretion?
• GHASP : An Halpha kinematic survey of 203 spiral and irregular galaxies - VII. Revisiting the analysis of Halpha data cubes for 97 galaxies
• The fundamental plane of star formation in galaxies revealed by the EAGLE hydrodynamical simulations
• Flat rotation curves and low velocity dispersions in KMOS star-forming galaxies at z~1
• An iterative method for the construction of N-body galaxy models in collisionless equilibrium
• On the origin of the fundamental metallicity relation and the scatter in galaxy scaling relations
• DYNAMO-HST Survey: Clumps in Nearby Massive Turbulent Disks and the Effects of Clump Clustering on Kiloparsec Scale Measurements of Clumps
• The relation between galaxy morphology and colour in the EAGLE simulation
• The Origin and Evolution of Fast and Slow Rotators in the Illustris Simulation
• The connection between mass, environment and slow rotation in simulated galaxies
• Hot-mode accretion and the physics of thin-disk galaxy formation
• Instability of Supersonic Cold Streams Feeding Galaxies IV: Survival of Radiatively Cooling Streams
• HI and CO Velocity Dispersions in Nearby Galaxies
• Non-equilibrium chemistry and cooling in the diffuse interstellar medium - II. Shielded gas
• The relationship between the morphology and kinematics of galaxies and its dependence on dark matter halo structure in EAGLE
• Angular momentum evolution of galaxies over the past 10-Gyr: A MUSE and KMOS dynamical survey of 400 star-forming galaxies from z=0.3-1.7
• MASSIV: Mass Assemby Survey with SINFONI in VVDS. I. Survey description and global properties of the 0.9 < z < 1.8 galaxy sample
• On the self-regulation of intense star-formation in galaxies at z=1-3
• The evolution of the star formation rate function in the EAGLE simulations: A comparison with UV, IR and H$\alpha$ observations from z ~ 8 to z ~ 0
• Cold Filamentary Accretion and the Formation of Metal Poor Globular Clusters and Halo Stars
• Ionized and molecular gas kinematics in a z=1.4 star-forming galaxy
• On the evolution of galaxy spin in a cosmological hydrodynamic simulation of galaxy clusters
• Systematic difference between ionized and molecular gas velocity dispersion in $z\sim 1-2$ disks and local analogues
• Kinematic Downsizing at z~2
• The MOSDEF Survey: Kinematic and Structural Evolution of Star-Forming Galaxies at $1.4\le z\le 3.8$
• The structure of gravitationally unstable gas-rich disk galaxies
• The formation of a thick disk through the heating of a thin disk: Agreement with orbital eccentricities of stars in the solar neighborhood
• Galactic inflow and wind recycling rates in the EAGLE simulations
• Structure Formation in Gas-Rich Galactic Discs with Finite Thickness: From Discs to Rings
• Numerical convergence of hydrodynamical simulations of galaxy formation: the abundance and internal structure of galaxies and their cold dark matter haloes
• The SAMI Galaxy Survey: energy sources of the turbulent velocity dispersion in spatially-resolved local star-forming galaxies
• The impact of stellar and AGN feedback on halo-scale baryonic and dark matter accretion in the EAGLE simulations
• What drives the evolution of gas kinematics in star-forming galaxies?
• The evolution of turbulent galactic discs: gravitational instability, feedback and accretion
• The SAMI Galaxy Survey: Gas velocity dispersions in low-$z$ star-forming galaxies and the drivers of turbulence
• A thermal-kinetic subgrid model for supernova feedback in simulations of galaxy formation
• From giant clumps to clouds I: the impact of gas fraction evolution on the stability of galactic discs
• From giant clumps to clouds -- III. The connection between star formation and turbulence in the ISM
• 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
• The Origin of Exponential Star-forming Disks
• SDSS-IV MaNGA: Understanding Ionized Gas Turbulence using Integral Field Spectroscopy of 4500 Star-Forming Disk Galaxies
• Global Simulations of Galactic Discs: Violent Feedback from Clustered Supernovae during Bursts of Star Formation
• Gas Accretion Can Drive Turbulence in Galaxies
• Kinematic analysis of EAGLE simulations: Evolution of ${\lambda }_{Re}$ and its connection with mergers and gas accretion
• Stellar and Gaseous Disk Structures in Cosmological Galaxy Equilibrium Models
• Unveiling the main sequence of galaxies at $z\ge 5$ with the James Webb Space Telescope: predictions from simulations
• Drivers of asymmetry in synthetic H I emission-line profiles of galaxies in the EAGLE simulation

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• The ALMA-ALPAKA survey I: high-resolution CO and [CI] kinematics of star-forming galaxies at z = 0.5-3.5
• The ALMA-ALPAKA survey II. Evolution of turbulence in galaxy disks across cosmic time: difference between cold and warm gas
• The interplay between feedback, accretion, transport and winds in setting gas-phase metal distribution in galaxies
• The ALMA-CRISTAL survey: Resolved kinematic studies of main sequence star-forming galaxies at 4<z<6
• The SAMI Galaxy Survey: galaxy spin is more strongly correlated with stellar population age than mass or environment
• The Tully-Fisher relation from SDSS-MaNGA: Physical causes of scatter and variation at different radii
• Turbulent gas-rich discs at high redshift: origin of thick stellar discs through 3D 'baryon sloshing'
• On the origin of compressive turbulence in protoclumps in high redshift disks
• Understanding the radio luminosity function of star-forming galaxies and its cosmological evolution
• The AGORA High-resolution Galaxy Simulations Comparison Project. VIII: Disk Formation and Evolution of Simulated Milky Way Mass Galaxy Progenitors at $1<z<5$
• Stellar-gas kinematic misalignments in EAGLE: lifetimes and longevity of misaligned galaxies
• A path towards constraining the evolution of the interstellar medium and outflows in the Milky Way using APOGEE
• Kennicutt-Schmidt relation of galaxies over 13 billion years in the COLIBRE hydrodynamical simulations
• Gamma Analytical Modeling Evolution (GAME) I: The physical implications of deriving the stellar mass functions from z=0 to z=8
• Magnetic field and kinetic helicity evolution in simulations of interacting disk galaxies