Non-parametric Morphologies of Galaxies in the EAGLE Simulation

Abstract

We study the optical morphology of galaxies in a large-scale hydrodynamic cosmological simulation, the EAGLE simulation. Galaxy morphologies were characterized using non-parametric statistics (Gini, $M_{20}$, Concentration and Asymmetry) derived from mock images computed using a 3D radiative transfer technique and post-processed to approximate observational surveys. The resulting morphologies were contrasted to observational results from a sample of ${\log }_{10}(M_{\ast }/M_{\odot })>10$ galaxies at $z\sim 0.05$ in the GAMA survey. We find that the morphologies of EAGLE galaxies reproduce observations, except for asymmetry values which are larger in the simulated galaxies. Additionally, we study the effect of spatial resolution in the computation of non-parametric morphologies, finding that Gini and Asymmetry values are systematically reduced with decreasing spatial resolution. Gini values for lower mass galaxies are especially affected. Comparing against other large scale simulations, the non-parametric statistics of EAGLE galaxies largely agree with those found in IllustrisTNG. Additionally, EAGLE galaxies mostly reproduce observed trends between morphology and star formation rate and galaxy size. Finally, We also find a significant correlation between optical and kinematic estimators of morphologies, although galaxy classification based on an optical or a kinematic criteria results in different galaxy subsets. The correlation between optical and kinematic morphologies is stronger in central galaxies than in satellites, indicating differences in morphological evolution.

21 pages, 12 Figures. Accepted for publication in MNRAS

References in corpus (86)

• Stellar population synthesis at the resolution of 2003
• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• Populating a cluster of galaxies - I. Results at z=0
• Simulating Galaxy Formation with the IllustrisTNG Model
• The propagation of uncertainties in stellar population synthesis modeling I: The relevance of uncertain aspects of stellar evolution and the IMF to the derived physical properties of galaxies
• First results from the IllustrisTNG simulations: matter and galaxy clustering
• First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies
• Quantifying the bimodal color-magnitude distribution of galaxies
• First results from the IllustrisTNG simulations: the galaxy color bimodality
• The EAGLE simulations of galaxy formation: calibration of subgrid physics and model variations
• The Dependence of Star Formation History and Internal Structure on Stellar Mass for 10^5 Low-Redshift Galaxies
• Properties of galaxies reproduced by a hydrodynamic simulation
• The Environmental Dependence of the Relations between Stellar Mass, Structure, Star Formation and Nuclear Activity in Galaxies
• First results from the IllustrisTNG simulations: A tale of two elements -- chemical evolution of magnesium and europium
• Simulating galaxy formation with black hole driven thermal and kinetic feedback
• Galaxy and Mass Assembly (GAMA): survey diagnostics and core data release
• First results from the IllustrisTNG simulations: radio haloes and magnetic fields
• A model for cosmological simulations of galaxy formation physics
• The effect of photo-ionization on the cooling rates of enriched, astrophysical plasmas
• LSST Science Book, Version 2.0
• The Relationship Between Stellar Light Distributions of Galaxies and their Formation Histories
• A New Non-Parametric Approach to Galaxy Morphological Classification
• The SAURON project -- IX. A kinematic classification for early-type galaxies
• Galaxy Star-Formation as a Function of Environment in the Early Data Release of the Sloan Digital Sky Survey
• The ATLAS3D project - III. A census of the stellar angular momentum within the effective radius of early-type galaxies: unveiling the distribution of Fast and Slow Rotators
• Galaxy Structure and Mode of Star Formation in the SFR-Mass Plane from z ~ 2.5 to z ~ 0.1
• Galaxy Stellar Mass Assembly between 0.2<z<2 from the S-COSMOS survey
• Chemical enrichment in cosmological, smoothed particle hydrodynamics simulations
• Galaxy And Mass Assembly: Stellar Mass Estimates
• New Interstellar Dust Models Consistent with Extinction, Emission, and Abundance Constraints
• On the relation between the Schmidt and Kennicutt-Schmidt star formation laws and its implications for numerical simulations
• Star formation thresholds and galaxy edges: why and where
• Simulating galactic outflows with thermal supernova feedback
• The Asymmetry of Galaxies: Physical Morphology for Nearby and High Redshift Galaxies
• The Evolution of Galaxy Structure over Cosmic Time
• The Evolution of Galaxy Mergers and Morphology at z<1.2 in the Extended Groth Strip
• The optical morphologies of galaxies in the IllustrisTNG simulation: a comparison to Pan-STARRS observations
• The Atlas3D project - VII. A new look at the morphology of nearby galaxies: the kinematic morphology-density relation
• Galaxy Merger Morphologies and Time-Scales from Simulations of Equal-Mass Gas-Rich Disc Mergers
• Preparing Red-Green-Blue (RGB) Images from CCD Data
• Evolution of galaxy stellar masses and star formation rates in the EAGLE simulations
• GAMA: towards a physical understanding of galaxy formation
• Galaxy And Mass Assembly (GAMA): The galaxy stellar mass function at z < 0.06
• A physical model for cosmological simulations of galaxy formation: multi-epoch validation
• Efficient 3D NLTE dust radiative transfer with SKIRT
• What turns galaxies off? The different morphologies of star-forming and quiescent galaxies since z~2 from CANDELS
• The Size Evolution of Star-forming and Quenched Galaxies in the IllustrisTNG simulation
• Bulgeless Giant Galaxies Challenge our Picture of Galaxy Formation by Hierarchical Clustering
• The dark nemesis of galaxy formation: why hot haloes trigger black hole growth and bring star formation to an end
• Sunrise: Polychromatic Dust Radiative Transfer in Arbitrary Geometries
• The impact of angular momentum on black hole accretion rates in simulations of galaxy formation
• Angular momentum and galaxy formation revisited
• Effects of Supernova Feedback on the Formation of Galaxy Disks
• Modelling the Pan-Spectral Energy Distribution of Starburst Galaxies: IV The Controlling Parameters of the Starburst SED
• Colours and luminosities of z=0.1 simulated galaxies in the EAGLE simulations
• Size evolution of normal and compact galaxies in the EAGLE simulation
• The SAURON project - XII. Kinematic substructures in early-type galaxies: evidence for disks in fast rotators
• Galaxy Morphology and Star Formation in the Illustris Simulation at z=0
• Optical colours and spectral indices of $z=0.1$ EAGLE galaxies with 3D dust radiative transfer code SKIRT
• Three-Dimensional Dust Radiative Transfer
• Feedback and the Structure of Simulated Galaxies at redshift z=2
• The SAMI Galaxy Survey: the link between angular momentum and optical morphology
• Shape asymmetry: a morphological indicator for automatic detection of galaxies in the post-coalescence merger stages
• Fundamental Mass-Spin-Morphology Relation of Spiral Galaxies
• Synthetic Galaxy Images and Spectra from the Illustris Simulation
• Galaxy and Mass Assembly (GAMA): Optimal Tiling of Dense Surveys with a Multi-Object Spectrograph
• It's not easy being green: The evolution of galaxy colour in the EAGLE simulation
• Far-infrared and dust properties of present-day galaxies in the EAGLE simulations
• Galaxy And Mass Assembly: Evolution of the Halpha luminosity function and star formation rate density up to z<0.35
• The connection between galaxy structure and quenching efficiency
• The local star-formation rate density: assessing calibrations using [OII], Ha and UV luminosities
• Galaxy And Mass Assembly (GAMA): Linking Star Formation Histories and Stellar Mass Growth
• The relation between galaxy morphology and colour in the EAGLE simulation
• The connection between mass, environment and slow rotation in simulated galaxies
• The Hubble Sequence at $z\sim 0$ in the IllustrisTNG simulation with deep learning
• New Image Statistics for Detecting Disturbed Galaxy Morphologies at High Redshift
• The three phases of galaxy formation
• The relationship between the morphology and kinematics of galaxies and its dependence on dark matter halo structure in EAGLE
• Diverse Structural Evolution at z > 1 in Cosmologically Simulated Galaxies
• The oxygen abundance gradients in the gas discs of galaxies in the EAGLE simulation
• The star formation rate and stellar content contributions of morphological components in the EAGLE simulations
• The origin of the red sequence galaxy population in the EAGLE simulation
• The SAMI Galaxy Survey: Satellite galaxies undergo little structural change during their quenching phase
• Galaxies in the Illustris simulation as seen by the Sloan Digital Sky Survey - I: Bulge+disc decompositions, methods, and biases
• Herschel-ATLAS: Correlations between Dust and Gas in Local Submm-Selected Galaxies
• Field spheroid-dominated galaxies in a Λ-CDM Universe

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• The evolution of the oxygen abundance gradients in star-forming galaxies in the EAGLE simulations
• Color gradients and half-mass radii of galaxies out to $z=2$ in the CANDELS/3D-HST fields: further evidence for important differences in the evolution of mass-weighted and light-weighted sizes
• Reproducing the Universe: a comparison between the EAGLE simulations and the nearby DustPedia galaxy sample
• High-resolution synthetic UV-submm images for simulated Milky Way-type galaxies from the Auriga project
• What is Important? Morphological Asymmetries are Useful Predictors of Star Formation Rates of Star-forming Galaxies in SDSS Stripe 82
• Infrared luminosity functions and dust mass functions in the EAGLE simulation
• The galaxy morphology-density relation in the EAGLE simulation
• Spatially resolved mock observations of stellar kinematics: full radiative transfer treatment of simulated galaxies
• Globular cluster metallicity distributions in the E-MOSAICS simulations
• ERGO-ML: Comparing IllustrisTNG and HSC galaxy images via contrastive learning
• The age gradients of galaxies in EAGLE: outside-in quenching as the origin of young bulges in cluster galaxies
• A machine learning approach to infer the accreted stellar mass fractions of central galaxies in the TNG100 simulation
• Tidal features and disc thicknesses of edge-on galaxies in the SDSS Stripe 82
• Probabilistic model for dynamic galaxy decomposition
• HI asymmetries in spatially resolved SIMBA galaxies
• Quantitatively rating galaxy simulations against real observations with anomaly detection
• Deciphering galaxy images using machine vision -- Combining variational autoencoder and principal component analysis for feature extraction
• Observed structural parameters of EAGLE galaxies: reconciling the mass-size relation in simulations with local observations
• Effect of AGN on the morphological properties of their host galaxies in the local Universe
• Using the EAGLE simulations to elucidate the origin of disc surface brightness profile breaks as a function of mass and environment