The impact of baryons on the internal structure of dark matter haloes from dwarf galaxies to superclusters in the redshift range 0<z<7

Abstract

We investigate the redshift evolution of the concentration-mass relationship of dark matter haloes in state-of-the-art cosmological hydrodynamic simulations and their dark-matter-only counterparts. By combining the IllustrisTNG suite and the novel MillenniumTNG simulation, our analysis encompasses a wide range of box size ($50-740\mathrm{cMpc}$) and mass resolution ($8.5\times 10^4-3.1\times 10^7{\mathrm{M}}_{\odot }$ per baryonic mass element). This enables us to study the impact of baryons on the concentration-mass relationship in the redshift interval $0<z<7$ over an unprecedented halo mass range, extending from dwarf galaxies to superclusters ($\sim 10^{9.5}-10^{15.5}{\mathrm{M}}_{\odot }$). We find that the presence of baryons increases the steepness of the concentration-mass relationship at higher redshift, and demonstrate that this is driven by adiabatic contraction of the profile, due to gas accretion at early times, which promotes star formation in the inner regions of haloes. At lower redshift, when the effects of feedback start to become important, baryons decrease the concentration of haloes below the mass scale $\sim 10^{11.5}{\mathrm{M}}_{\odot }$. Through a rigorous information criterion test, we show that broken power-law models accurately represent the redshift evolution of the concentration-mass relationship, and of the relative difference in the total mass of haloes induced by the presence of baryons. We provide the best-fit parameters of our empirical formulae, enabling their application to models that mimic baryonic effects in dark-matter-only simulations over six decades in halo mass in the redshift range $0<z<7$.

Published in the Monthly Notices of the Royal Astronomical Society (MNRAS). This is a pre-copyedited, author-produced version of the article accepted for publication in MNRAS following peer review. The version of record is available online at: https://doi.org/10.1093/mnras/stae2613 . Minor updates wrt previous version. Typo corrected in Table 2 (now Table 3). Conclusions unchanged

References in corpus (36)

• 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
• Simulating galaxy formation with black hole driven thermal and kinetic feedback
• Simba: Cosmological Simulations with Black Hole Growth and Feedback
• Concentration, Spin and Shape of Dark Matter Haloes as a Function of the Cosmological Model: WMAP1, WMAP3 and WMAP5 results
• The redshift dependence of the structure of massive LCDM halos
• Simulating cosmic structure formation with the GADGET-4 code
• Baryon effects on the internal structure of LCDM halos in the EAGLE simulations
• The CAMELS project: Cosmology and Astrophysics with MachinE Learning Simulations
• Cosmological puzzle resolved by stellar feedback in high redshift galaxies
• The Uchuu Simulations: Data Release 1 and Dark Matter Halo Concentrations
• The FLAMINGO project: cosmological hydrodynamical simulations for large-scale structure and galaxy cluster surveys
• Baryonic Pinching of Galactic Dark Matter Halos
• The abundance of (not just) dark matter haloes
• The MillenniumTNG Project: The hydrodynamical full physics simulation and a first look at its galaxy clusters
• The MillenniumTNG Project: The galaxy population at $z\ge 8$
• Feedback reshapes the baryon distribution within haloes, in halo outskirts, and beyond: the closure radius from dwarfs to massive clusters
• The MillenniumTNG Project: High-precision predictions for matter clustering and halo statistics
• On the impact of baryons on the halo mass function, bias, and cluster cosmology
• How baryons affect halos and large-scale structure: a unified picture from the Simba simulation
• Baryonic Imprints on DM Halos: Population Statistics from Dwarf Galaxies to Galaxy Clusters
• Cosmology dependency of halo masses and concentrations in hydrodynamic simulations
• The MillenniumTNG Project: An improved two-halo model for the galaxy-halo connection of red and blue galaxies
• The MillenniumTNG Project: The impact of baryons and massive neutrinos on high-resolution weak gravitational lensing convergence maps
• Connecting the structure of dark matter haloes to the primordial power spectrum
• The MillenniumTNG Project: Intrinsic alignments of galaxies and halos
• The MillenniumTNG Project: Refining the one-halo model of red and blue galaxies at different redshifts
• The impact of galactic feedback on the shapes of dark-matter haloes
• Mapping "out-of-the-box" the properties of the baryons in massive halos
• The MillenniumTNG Project: Inferring cosmology from galaxy clustering with accelerated N-body scaling and subhalo abundance matching
• The impact of baryonic physics on the abundance, clustering, and concentration of halos
• The MillenniumTNG Project: The large-scale clustering of galaxies
• The MillenniumTNG Project: Semi-analytic galaxy formation models on the past lightcone
• On the redshift evolution of the baryon and gas fraction in simulated groups and clusters of galaxies
• Baryonic Imprints on DM Halos: The concentration-mass relation in the CAMELS simulations
• Baryonic Imprints on DM Halos: the concentration-mass relation and its dependence on halo and galaxy properties

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• The galaxy-halo connection of disc galaxies over six orders of magnitude in stellar mass
• The AIDA-TNG project: dark matter profiles and concentrations in alternative dark matter models
• Constraints on dark matter models from the stellar cores observed in ultra-faint dwarf galaxies: Self-interacting dark matter
• MUSE-DARK-II: 3D morpho-kinematic modelling of lensed galaxies. Tully-Fisher relation of $z\sim 1$ star-forming galaxies
• Testing the thermal Sunyaev-Zel'dovich power spectrum of a halo model using hydrodynamical simulations