NIHAO XII: galactic uniformity in a ΛCDM universe

Abstract

We use a sample of 83 high-resolution cosmological zoom-in simulations and a semi-analytic model (SAM) to study the stochasticity of galaxy formation in haloes ranging from dwarf to Milky Way masses. Our simulated galaxies reproduce the observed inefficiency of galaxy formation as expressed through the stellar, gas and baryonic Tully-Fisher relations. For HI velocities in the range (70 < V < 220 km/s), the scatter is just 0.08 to 0.14 dex, consistent with the observed intrinsic scatter at these scales. At low velocities (20 < V < 70 km/s), the simulated scatter is 0.2-0.25 dex, which could be tested with future observations. The scatter in the stellar mass versus dark halo velocity relation is constant for 30 < V < 180 km/s, and smaller (~0.17 dex) when using the maximum circular velocity of the dark matter only simulation, Vmax, compared to the virial velocity ($V_{200}$ or $V_{200}^{DMO}$). The scatter in stellar mass is correlated with halo concentration, and is minimized when using a circular velocity at a fixed fraction of the virial radius $\simeq 0.4R_{200}$ or with $V_{\alpha }=V_{200}^{DMO}(V_{max}^{DMO}/V_{200}^{DMO}{)}^{\alpha }$ with α~ 0.7, consistent with constraints from halo clustering. Using the SAM we show the correlation between halo formation time and concentration is essential in order to reproduce this result. This uniformity in galaxy formation efficiency we see in our hydrodynamical simulations and a semi-analytic model proves the simplicity and self-regulating nature of galaxy formation in a ΛCold Dark Matter universe.

arXiv comment16 pages, 13 figures, accepted to MNRAS

References in corpus (56)

• Planck 2013 results. XVI. Cosmological parameters
• Statistical Properties of X-ray Clusters: Analytic and Numerical Comparisons
• The Average Star Formation Histories of Galaxies in Dark Matter Halos from z=0-8
• The Formation of Galactic Disks
• Stellar mass-to-light ratios and the Tully-Fisher relation
• Astrophysics Source Code Library
• Concentrations of Dark Halos from their Assembly Histories
• Constraints on the relationship between stellar mass and halo mass at low and high redshift
• 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
• Ahf: Amiga's Halo Finder
• The Baryonic Tully-Fisher Relation
• Star Formation and Feedback in Smoothed Particle Hydrodynamic Simulations--I. Isolated Galaxies
• Galaxy halo masses and satellite fractions from galaxy-galaxy lensing in the SDSS: stellar mass, luminosity, morphology, and environment dependencies
• Gasoline: An adaptable implementation of TreeSPH
• Concentration, Spin and Shape of Dark Matter Haloes as a Function of the Cosmological Model: WMAP1, WMAP3 and WMAP5 results
• Constraining Galaxy Formation and Cosmology with the Conditional Luminosity Function of Galaxies
• Forming Disk Galaxies in Lambda CDM Simulations
• The APOSTLE simulations: solutions to the Local Group's cosmic puzzles
• New constraints on the evolution of the stellar-to-dark matter connection: a combined analysis of galaxy-galaxy lensing, clustering, and stellar mass functions from z=0.2 to z=1
• Connecting Galaxies, Halos, and Star Formation Rates Across Cosmic Time
• The Baryonic Tully-Fisher Relation of Gas Rich Galaxies as a Test of LCDM and MOND
• The evolution substructure I: a new identification method
• Making Galaxies in a Cosmological Context: The Need for Early Stellar Feedback
• Dark Halo and Disk Galaxy Scaling Laws in Hierarchical Universes
• NIHAO project I: Reproducing the inefficiency of galaxy formation across cosmic time with a large sample of cosmological hydrodynamical simulations
• The Connection between Galaxies and Dark Matter Structures in the Local Universe
• The Impact of Baryonic Physics on the Structure of Dark Matter Halos: the View from the FIRE Cosmological Simulations
• The formation of disc galaxies in high resolution moving-mesh cosmological simulations
• The size - virial radius relation of galaxies
• NIHAO IV: Core creation and destruction in dark matter density profiles across cosmic time
• Satellite Kinematics III: Halo Masses of Central Galaxies in SDSS
• The small scatter of the baryonic Tully-Fisher relation
• A Revised Model for the Formation of Disk Galaxies: Low Spin and Dark-Halo Expansion
• Scaling Relations of Spiral Galaxies
• Is there a "too big to fail" problem in the field?
• A Superbubble Feedback Model for Galaxy Simulations
• CFHTLenS: Co-evolution of galaxies and their dark matter haloes
• The Kinematic Connection Between Galaxies and Dark Matter Haloes
• The Impact of Feedback on Disk Galaxy Scaling Relations
• The origin of scatter in the stellar mass - halo mass relation of central galaxies in the EAGLE simulation
• Weighing Galaxy Disks with the Baryonic Tully-Fisher Relation
• The Concentration Dependence of the Galaxy-Halo Connection: Modeling Assembly Bias with Abundance Matching
• Calibrated Tully-Fisher relations for improved estimates of disk rotation velocities
• The Dependence of Subhalo Abundance on Halo Concentration
• The impact of local stellar radiation on the HI column density distribution
• Constraints on Assembly Bias from Galaxy Clustering
• The Tully-Fisher and mass-size relations from halo abundance matching
• 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 VIII: Circum-galactic medium and outflows - The puzzles of HI and OVI gas distributions
• Correlating galaxy colour and halo concentration: A tunable Halo Model of galactic conformity
• The baryonic Tully-Fisher relation and galactic outflows
• A Slippery Slope: Systematic Uncertainties in the Line Width Baryonic Tully-Fisher Relation
• The different baryonic Tully-Fisher relations at low masses
• NIHAO VII: Predictions for the galactic baryon budget in dwarf to Milky Way mass haloes

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• NIHAO XIII: Clumpy discs or clumpy light in high redshift galaxies?
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• NIHAO -- XXV. Convergence in the cusp-core transformation of cold dark matter haloes at high star formation thresholds
• Introducing galactic structure finder: the multiple stellar kinematic structures of a simulated Milky Way mass galaxy
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• Creating a galaxy lacking dark matter in a dark matter dominated universe
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• NIHAO XXII: Introducing black hole formation, accretion and feedback into the NIHAO simulation suite
• NIHAO-XXIII: Dark Matter density shaped by Black Hole feedback
• On the Determination of Rotation Velocity and Dynamical Mass of Galaxies Based on Integrated H I Spectra
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• Stars behind bars II: A cosmological formation scenario for the Milky Way's central stellar structure
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• Dynamic equilibrium sets atomic content of galaxies across cosmic time
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• Using Artificial Intelligence and real galaxy images to constrain parameters in galaxy formation simulations
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• NIHAO-LG: The uniqueness of Local Group dwarf galaxies
• Bridging Simulations and Observations: New Insights into Galaxy Formation Simulations via Out-of-Distribution Detection and Bayesian Model Comparison
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• CROCODILE-DWARF: Assembly and Kinematics of Field Dwarf Galaxies with GADGET4-OSAKA