NIHAO -- XXV. Convergence in the cusp-core transformation of cold dark matter haloes at high star formation thresholds

Abstract

We use cosmological hydrodynamical galaxy formation simulations from the NIHAO project to investigate the response of cold dark matter (CDM) haloes to baryonic processes. Previous work has shown that the halo response is primarily a function of the ratio between galaxy stellar mass and total virial mass, and the density threshold above which gas is eligible to form stars, $n[{\mathrm{cm}}^{-3}]$. At low $n$ all simulations in the literature agree that dwarf galaxy haloes are cuspy, but at high $n\ge 100$ there is no consensus. We trace halo contraction in dwarf galaxies with $n\ge 100$ reported in some previous simulations to insufficient spatial resolution. Provided the adopted star formation threshold is appropriate for the resolution of the simulation, we show that the halo response is remarkably stable for $n\ge 5$, up to the highest star formation threshold that we test, $n=500$. This free parameter can be calibrated using the observed clustering of young stars. Simulations with low thresholds $n\le 1$ predict clustering that is too weak, while simulations with high star formation thresholds $n\ge 5$, are consistent with the observed clustering. Finally, we test the CDM predictions against the circular velocities of nearby dwarf galaxies. Low thresholds predict velocities that are too high, while simulations with $n\sim 10$ provide a good match to the observations. We thus conclude that the CDM model provides a good description of the structure of galaxies on kpc scales provided the effects of baryons are properly captured.

arXiv comment15 pages, 10 figures, published in MNRAS

References in corpus (56)

• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• Introducing the Illustris Project: Simulating the coevolution of dark and visible matter in the Universe
• The Average Star Formation Histories of Galaxies in Dark Matter Halos from z=0-8
• Small-Scale Challenges to the $\Lambda$CDM Paradigm
• The EAGLE simulations of galaxy formation: calibration of subgrid physics and model variations
• Galaxies on FIRE (Feedback In Realistic Environments): Stellar Feedback Explains Cosmologically Inefficient Star Formation
• Galactic star formation and accretion histories from matching galaxies to dark matter haloes
• FIRE-2 Simulations: Physics versus Numerics in Galaxy Formation
• At the heart of the matter: the origin of bulgeless dwarf galaxies and Dark Matter cores
• Cold dark matter haloes in the Planck era: evolution of structural parameters for Einasto and NFW profiles
• Response of dark matter halos to condensation of baryons: cosmological simulations and improved adiabatic contraction model
• First Results from the TNG50 Simulation: The evolution of stellar and gaseous disks across cosmic time
• Ahf: Amiga's Halo Finder
• How supernova feedback turns dark matter cusps into cores
• Star Formation and Feedback in Smoothed Particle Hydrodynamic Simulations--I. Isolated Galaxies
• SPARC: Mass Models for 175 Disk Galaxies with Spitzer Photometry and Accurate Rotation Curves
• Accurate masses for dispersion-supported galaxies
• Cuspy No More: How Outflows Affect the Central Dark Matter and Baryon Distribution in Lambda CDM Galaxies
• The APOSTLE simulations: solutions to the Local Group's cosmic puzzles
• The Auriga Project: the properties and formation mechanisms of disc galaxies across cosmic time
• The dependence of dark matter profiles on the stellar to halo mass ratio: a prediction for cusps vs cores
• The evolution substructure I: a new identification method
• Making Galaxies in a Cosmological Context: The Need for Early Stellar Feedback
• EMERGE - An empirical model for the formation of galaxies since $z\sim 10$
• Mass loss from dwarf spheroidal galaxies: the origins of shallow dark matter cores and exponential surface brightness profiles
• NIHAO project I: Reproducing the inefficiency of galaxy formation across cosmic time with a large sample of cosmological hydrodynamical simulations
• Quantifying the heart of darkness with GHALO - a multi-billion particle simulation of our galactic halo
• Dark Halos: The Flattening of the Density Cusp by Dynamical Friction
• The Impact of Baryonic Physics on the Structure of Dark Matter Halos: the View from the FIRE Cosmological Simulations
• The Romulus Cosmological Simulations: A Physical Approach to the Formation, Dynamics and Accretion Models of SMBHs
• Dark matter cores all the way down
• NIHAO IV: Core creation and destruction in dark matter density profiles across cosmic time
• Gasoline2: A Modern SPH Code
• Too Big to Fail in the Local Group
• FIRE in the Field: Simulating the Threshold of Galaxy Formation
• Bar-driven dark halo evolution: a resolution of the cusp--core controversy
• The dynamics of isolated Local Group galaxies
• A dark matter profile to model diverse feedback-induced core sizes of $\Lambda$CDM haloes
• NIHAO XV: The environmental impact of the host galaxy on galactic satellite and field dwarf galaxies
• Baryon-induced dark matter cores in the EAGLE simulations
• NIHAO IX: the role of gas inflows and outflows in driving the contraction and expansion of cold dark matter haloes
• Numerical convergence of simulations of galaxy formation: the abundance and internal structure of cold dark matter haloes
• No cores in dark matter-dominated dwarf galaxies with bursty star formation histories
• The Hierarchical Distribution of the Young Stellar Clusters in Six Local Star Forming Galaxies
• NIHAO X: Reconciling the local galaxy velocity function with Cold Dark Matter via mock HI observations
• NIHAO V: Too big doesn't fail -- reconciling the conflict between LCDM predictions and the circular velocities of nearby field galaxies
• NIHAO XIII: Clumpy discs or clumpy light in high redshift galaxies?
• NIHAO XX: The impact of the star formation threshold on the cusp-core transformation of cold dark matter haloes
• NIHAO XII: galactic uniformity in a ΛCDM universe
• Stars behind bars I: The Milky Way's central stellar populations
• NIHAO XVIII: Origin of the MOND phenomenology of galactic rotation curves in a LCDM universe
• NIHAO-XXIII: Dark Matter density shaped by Black Hole feedback
• An observational test for star formation prescriptions in cosmological hydrodynamical simulations
• Stars behind bars II: A cosmological formation scenario for the Milky Way's central stellar structure
• NIHAO III: The constant disc gas mass conspiracy
• NIHAO XVII: The diversity of dwarf galaxy kinematics and implications for the HI velocity function

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• The challenge of simultaneously matching the observed diversity of chemical abundance patterns in cosmological hydrodynamical simulations
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• The MUSE Extremely Deep Field: Evidence for SFR-induced cores in dark-matter dominated galaxies at z=1
• Degeneracies Between Self-interacting Dark Matter and Supernova Feedback as cusp-core transformation mechanisms
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• The Effects of Dark Matter and Baryonic Physics on the Milky Way Subhalo Population in the Presence of the Large Magellanic Cloud
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• Subsonic accretion and dynamical friction for a black hole moving through a self-interacting scalar dark matter cloud
• SN-driven mechanism of cusp-core transformation: an appraisal
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• A MARVEL-ous study of how well galaxy shapes reflect Dark Matter halo shapes in Cold Dark Matter Simulations
• HELLO project: High-$z$ Evolution of Large and Luminous Objects
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• Scalar Field Dark Matter: Impact of Supernovae-driven blowouts on the soliton structure of low mass dark matter halos
• Quantitatively rating galaxy simulations against real observations with anomaly detection
• Bridging Simulations and Observations: New Insights into Galaxy Formation Simulations via Out-of-Distribution Detection and Bayesian Model Comparison
• LYRA II: Cosmological dwarf galaxy formation with inhomogeneous Population III enrichment
• A probabilistic deep learning model to distinguish cusps and cores in dwarf galaxies
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