Large-eddy simulations of isolated disc galaxies with thermal and turbulent feedback
arXiv:1405.6245 · doi:10.1093/mnras/stu1119
Abstract
We present a subgrid-scale model for the Multi-phase Interstellar medium, Star formation, and Turbulence (MIST) and explore its behaviour in high-resolution large-eddy simulations of isolated disc galaxies. MIST follows the evolution of a clumpy cold and a diffuse warm component of the gas within a volume element which exchange mass and energy via various cooling, heating and mixing processes. The star formation rate is dynamically computed from the state of the gas in the cold phase. An important feature of MIST is the treatment of unresolved turbulence in the two phases and its interaction with star formation and feedback by supernovae. This makes MIST a particularly suitable model for the interstellar medium in galaxy simulations. We carried out a suite of simulations varying fundamental parameters of our feedback implementation. Several observational properties of galactic star formation are reproduced in our simulations, such as an average star formation efficiency ~1%, a typical velocity dispersion around ~10 km/s in star-forming regions, and an almost linear relationship between the column densities of star formation and dense molecular gas.
arXiv comment21 pages, 20 figures, accepted for publication by MNRAS
References in corpus (71)
- A Universal Density Profile from Hierarchical Clustering
- The Global Schmidt Law in Star Forming Galaxies
- Star Formation in the Milky Way and Nearby Galaxies
- Theory of Star Formation
- The Star Formation Efficiency in Nearby Galaxies: Measuring Where Gas Forms Stars Effectively
- The Star Formation Law in Nearby Galaxies on Sub-Kpc Scales
- The Spitzer c2d Legacy Results: Star Formation Rates and Efficiencies; Evolution and Lifetimes
- A Multi-Code Analysis Toolkit for Astrophysical Simulation Data
- A General Theory of Turbulence-Regulated Star Formation, From Spirals to ULIRGs
- The Star Formation Rate and Dense Molecular Gas in Galaxies
- A Study of the Gas-Star Formation Relation over Cosmic Time
- PHIBSS: molecular gas content and scaling relations in z~1-3 normal star forming galaxies
- Very High Gas Fractions and Extended Gas Reservoirs in z=1.5 Disk Galaxies
- Comparing the statistics of interstellar turbulence in simulations and observations: Solenoidal versus compressive turbulence forcing
- On the Star Formation Rates in Molecular Clouds
- Star Formation and Feedback in Smoothed Particle Hydrodynamic Simulations--I. Isolated Galaxies
- The Relationship Between Gas Content and Star Formation in Molecule-Rich Spiral Galaxies
- Molecular Gas and Star Formation in Nearby Disk Galaxies
- Towards a complete accounting of energy and momentum from stellar feedback in galaxy formation simulations
- The Star Formation Rate of Supersonic MHD Turbulence
- The Star Formation Law in Atomic and Molecular Gas
- Making Galaxies in a Cosmological Context: The Need for Early Stellar Feedback
- A Constant Molecular Gas Depletion Time in Nearby Disk Galaxies
- The Galactic disk mass-budget : I. stellar mass-function and density
- On the Star Formation Efficiency of Turbulent Magnetized Clouds
- Star Formation Efficiencies and Lifetimes of Giant Molecular Clouds in the Milky Way
- Maximally Star-Forming Galactic Disks I. Starburst Regulation Via Feedback-Driven Turbulence
- Accretion-Driven Turbulence as Universal Process: Galaxies, Molecular Clouds, and Protostellar Disks
- Star Formation in Disk Galaxies. I. Formation and Evolution of Giant Molecular Clouds via Gravitational Instability and Cloud Collisions
- Nyx: A Massively Parallel AMR Code for Computational Cosmology
- Hydrodynamics of high-redshift galaxy collisions: From gas-rich disks to dispersion-dominated mergers and compact spheroids
- Analytical star formation rate from gravoturbulent fragmentation
- The driving mechanism of starbursts in galaxy mergers
- Validation of the equilibrium model for galaxy evolution to z~3 through molecular gas and dust observations of lensed star-forming galaxies
- Modeling Molecular Hydrogen and Star Formation in Cosmological Simulations
- The Scale Dependence of the Molecular Gas Depletion Time in M33
- The Spatially Resolved Star Formation Law from Integral Field Spectroscopy: VIRUS-P Observations of NGC 5194
- Simulations of disk galaxies with cosmic ray driven galactic winds
- Direct Numerical Simulation of Radiation Pressure-Driven Turbulence and Winds in Star Clusters and Galactic Disks
- The Exciting Lives of Giant Molecular Clouds
- Reproducing the Stellar Mass/Halo Mass Relation in Simulated LCDM Galaxies: Theory vs Observational Estimates
- The Birth of a Galaxy. II. The Role of Radiation Pressure
- A Simple Law of Star Formation
- The two-phase formation history of spiral galaxies traced by the cosmic evolution of the bar fraction
- Gravity-driven Turbulence in Galactic Disks
- Breakdown of Kennicutt-Schmidt Law at GMC Scales in M33
- The linewidth-size relationship in the dense ISM of the Central Molecular Zone
- On the Dynamics and Evolution of Gravitational Instability-Dominated Disks
- Large scale galactic turbulence: can self-gravity drive the observed HI velocity dispersions?
- Thermal Instability-Induced Interstellar Turbulence
- Accretion-Driven Turbulence and the Transition to Global Instability in Young Galaxy Disks
- Magnetorotationally-Driven Galactic Turbulence and the Formation of Giant Molecular Clouds
- Probability Distribution Functions OF 12CO(J = 1-0) Brightness and Integrated Intensity in M51: The PAWS View
- GMC Evolutions in the Nearby Spiral Galaxy M33
- Gravitational Runaway and Turbulence Driving in Star-Gas Galactic Disks
- A Fluid-Dynamical Subgrid Scale Model for Highly Compressible Astrophysical Turbulence
- A sub-resolution multiphase interstellar medium model of star formation and SNe energy feedback
- On the effect of cosmological inflow on turbulence and instability in galactic discs
- Equilibrium Initialization and Stability of Three-Dimensional Gas Disks
- 3D MHD Modeling of the Gaseous Structure of the Galaxy: Setup and Initial Results
- Cosmological Fluid Mechanics with Adaptively Refined Large Eddy Simulations
- Giant Molecular Outflows Powered by Protostars in L1448
- Accretion Does Not Drive the Turbulence in Galactic Disks
- The theory of stellar winds
- Turbulent viscosity in clumpy accretion disks II supernova driven turbulence in the Galaxy
- Giant Molecular Cloud Formation in Disk Galaxies: Characterizing Simulated versus Observed Cloud Catalogues
- A semi-analytic model of the turbulent multi-phase interstellar medium
- From large scale gas compression to cluster formation in the Antennae overlap region
- Schmidt-Kennicutt relations in SPH simulations of disc galaxies with effective thermal feedback from supernovae
- Self-Sustained Turbulence without Dynamical Forcing: A Two-Dimensional Study of a Bistable Interstellar Medium
- Timescales on which Star Formation Affects the Neutral ISM
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- The physical origin of long gas depletion times in galaxies
- Non-universal star formation efficiency in turbulent ISM
- Inclination Dependence of Lyman-Alpha Properties in a Turbulent Disk Galaxy
- Dark matter in galaxies
- Adaptive mesh refinement simulations of a galaxy cluster merger - I. Resolving and modelling the turbulent flow in the cluster outskirts
- GMCs scaling relations: role of the cloud definition
- A nonlinear structural subgrid-scale closure for compressible MHD Part II: a priori comparison on turbulence simulation data
- Cloud Properties and Correlations with Star Formation in Numerical Simulations of the Three-Phase ISM
- The small and the beautiful: How the star formation law affects galactic disk structure
- Magnetic fields during galaxy mergers
- A Subgrid Turbulent Mean Field Dynamo Model for Cosmological Galaxy Formation Simulations
- Intermittent fragmentation and statistical variations during gas collapse in magnetised atomic cooling haloes
- Entropy-Conserving Scheme for Modeling Nonthermal Energies in Fluid Dynamics Simulations