Total mass density slopes of early-type galaxies using Jeans dynamical modelling at redshifts $0.29<z<0.55$

Abstract

The change of the total mass density slope, $\gamma$, of early-type galaxies through cosmic time is a probe of evolutionary pathways. Hydrodynamical cosmological simulations show that at high redshifts density profiles of early-type galaxies were on average steep ($\gamma \sim -3$). As redshift approaches zero, gas-poor mergers progressively cause the total mass density slope to approach the `isothermal' slope of $\gamma \sim -2$. Simulations therefore predict steep density slopes at high redshifts, with little to no evolution in density slopes below $z\sim 1$. Gravitational lensing results in the same redshift range find the opposite, namely a significant trend of shallow density slopes at high redshifts, becoming steeper as redshift approaches zero. Gravitational lensing results indicate a different evolutionary mechanism for early-type galaxies than dry merging, such as continued gas accretion or off-axis mergers. At redshift zero, isothermal solutions are obtained by both simulations and dynamical modelling. This work applies the Jeans dynamical modelling technique to observations of galaxies at intermediate redshifts ($0.29<z<0.55$) in order to derive density slopes to address the tension between observations and simulations. We combine two-dimensional kinematic fields from MUSE data with Hubble Space Telescope photometry. The density slopes of 90 early-type galaxies from the Frontier Fields project are presented. The total sample has a median of $\gamma =-2.11\pm 0.03$ (standard error), in agreement with dynamical modelling studies at redshift zero. The lack of evolution in total density slopes in the past 4-6 Gyrs supports a dry merging model for early-type galaxy evolution.

arXiv comment27 pages, 10 figures, accepted for publication in MNRAS

References in corpus (94)

• emcee: The MCMC Hammer
• A Universal Density Profile from Hierarchical Clustering
• Parametric Recovery of Line-of-Sight Velocity Distributions from Absorption-Line Spectra of Galaxies via Penalized Likelihood
• Simulating Galaxy Formation with the IllustrisTNG Model
• First results from the IllustrisTNG simulations: matter and galaxy clustering
• Overview of the SDSS-IV MaNGA Survey: Mapping Nearby Galaxies at Apache Point Observatory
• The epochs of early-type galaxy formation as a function of environment
• Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Power Spectra and WMAP-Derived Parameters
• 3D-HST+CANDELS: The Evolution of the Galaxy Size-Mass Distribution since $z=3$
• Adaptive spatial binning of integral-field spectroscopic data using Voronoi tessellations
• A Cosmology Calculator for the World Wide Web
• The Atlas3D project -- I. A volume-limited sample of 260 nearby early-type galaxies: science goals and selection criteria
• Minor mergers and the size evolution of elliptical galaxies
• The MUSE second-generation VLT instrument
• Evolutionary Stellar Population Synthesis with MILES. Part I: The Base Models and a New Line Index System
• The Growth of Massive Galaxies Since z=2
• The Two Phases of Galaxy Formation
• An updated MILES stellar library and stellar population models
• The Atlas3D project - XV. Benchmark for early-type galaxies scaling relations from 260 dynamical models: mass-to-light ratio, dark matter, Fundamental Plane and Mass Plane
• The Stellar Population Histories of Early-Type Galaxies. II. Controlling Parameters of the Stellar Populations
• The Frontier Fields: Survey Design
• The SAURON project -- X. The orbital anisotropy of elliptical and lenticular galaxies: revisiting the (V/sigma,epsilon) diagram with integral-field stellar kinematics
• The Sloan Lens ACS Survey. X. Stellar, Dynamical, and Total Mass Correlations of Massive Early-type Galaxies
• The Sloan Lens ACS Survey. III - The Structure and Formation of Early-type Galaxies and their Evolution since z~1
• The Relation Between Compact, Quiescent High Redshift Galaxies and Massive Nearby Elliptical Galaxies: Evidence for Hierarchical, Inside-Out Growth
• Strong size evolution of the most massive galaxies since z~2
• Measuring the inclination and mass-to-light ratio of axisymmetric galaxies via anisotropic Jeans models of stellar kinematics
• Efficient Multi-Gaussian Expansion of galaxies
• The Evolution of Galaxy Structure over Cosmic Time
• Structure and star formation in galaxies out to z=3: evidence for surface density dependent evolution and upsizing
• Can Minor Merging Account for the Size Growth of Quiescent Galaxies? New Results from the CANDELS Survey
• The Atlas3D Project - XXX. Star formation histories and stellar population scaling relations of early-type galaxies
• Massive Dark-matter halos and Evolution of Early-type Galaxies to z=1
• The Data Processing Pipeline for the MUSE Instrument
• Data analysis recipes: Using Markov Chain Monte Carlo
• A highly magnified candidate for a young galaxy seen when the Universe was 500 Myrs old
• Creation of cosmic structure in the complex galaxy cluster merger Abell 2744
• How do minor mergers promote inside-out growth of ellipticals, transforming the size, density profile and dark matter fraction?
• The Greater Impact of Mergers on the Growth of Massive Galaxies: Implications for Mass Assembly and Evolution Since z~1
• Connecting Angular Momentum and Galactic Dynamics: The complex Interplay between Spin, Mass, and Morphology
• An SZ-selected sample of the most massive galaxy clusters in the 2500-square-degree South Pole Telescope survey
• A simple model for the size-evolution of elliptical galaxies
• Two-dimensional kinematics of SLACS lenses: III. Mass structure and dynamics of early-type lens galaxies beyond z ~ 0.1
• The Evolution of the M-sigma Relation
• The SL2S Galaxy-scale Lens Sample. IV. The dependence of the total mass density profile of early-type galaxies on redshift, stellar mass, and size
• Kinematic properties of early-type galaxy haloes using planetary nebulae
• COSMOS-DASH: The Evolution of the Galaxy Size-Mass Relation Since z~3 from new Wide Field WFC3 Imaging Combined with CANDELS/3DHST
• The sizes, masses and specific star-formation rates of massive galaxies at 1.3<z<1.5: strong evidence in favour of evolution via minor mergers
• The SAGES Legacy Unifying Globulars and GalaxieS Survey (SLUGGS): Sample definition, methods, and initial results
• The BOSS Emission-Line Lens Survey (BELLS). I. A large spectroscopically selected sample of Lens Galaxies at redshift ~ 0.5
• CLASH-VLT: Insights on the mass substructures in the Frontier Fields Cluster MACS J0416.1-2403 through accurate strong lens modeling
• Strong lensing analysis of Abell 2744 with MUSE and Hubble Frontier Fields images
• The SAMI Galaxy Survey: Revisiting Galaxy Classification Through High-Order Stellar Kinematics
• Relaxation and Stripping: The Evolution of Sizes, Dispersions and Dark Matter Fractions in Major and Minor Mergers of Elliptical Galaxies
• Size Evolution of Spheroids in a Hierarchical Universe
• The BOSS Emission-Line Lens Survey. II. Investigating Mass-Density Profile Evolution in the SLACS+BELLS Strong Gravitational Lens Sample
• The evolution of the mass-size relation for early type galaxies from z~1 to the present: dependence on environment, mass-range and detailed morphology
• The SL2S Galaxy-scale Lens Sample. II. Cosmic evolution of dark and luminous mass in early-type galaxies
• A refined mass distribution of the cluster MACS J0416.1$-$2403 from a new large set of spectroscopic multiply lensed sources
• Dark matter halos of massive elliptical galaxies at $z\sim 0.2$ are well described by the Navarro-Frenk-White profile
• The Co-Evolution of Total Density Profiles and Central Dark Matter Fractions in Simulated Early-Type Galaxies
• Truncation of galaxy dark matter halos in high density environments
• Lens Modeling Abell 370: Crowning the Final Frontier Field with MUSE
• The story of supernova 'Refsdal' told by MUSE
• The shape of the dark matter halo in the early-type galaxy NGC 2974
• The bulge-halo conspiracy in massive elliptical galaxies: implications for the stellar initial mass function and halo response to baryonic processes
• Small scatter and nearly-isothermal mass profiles to four half-light radii from two-dimensional stellar dynamics of early-type galaxies
• Abell 370 revisited: refurbished Hubble imaging of the first strong lensing cluster
• The Dark Halo - Spheroid Conspiracy and the Origin of Elliptical Galaxies
• The Outer Stellar Halos of Galaxies: how Radial Merger Mass Deposition, Shells and Streams depend on Infall-Orbit Configurations
• The slope of the mass profile and the tilt of the fundamental plane in early-type galaxies
• The ATLAS3D Project - XXI. Correlations between gradients of local escape velocity and stellar populations in early-type galaxies
• The evolution of the number density of compact galaxies
• MUSE integral-field spectroscopy towards the Frontier Fields Cluster Abell S1063: I. Data products and redshift identifications
• Spatially Resolved Stellar Kinematics from LEGA-C: Increased Rotational Support in z~0.8 Quiescent Galaxies
• The inner structure of early-type galaxies in the Illustris simulation
• Galaxy evolution across environments as probed by the ages, stellar metallicities and [alpha/Fe] of central and satellite galaxies
• Dry mergers and the formation of early-type galaxies: constraints from lensing and dynamics
• Systematic trends in total-mass profiles from dynamical models of early-type galaxies
• Assessing the Jeans Anisotropic Multi-Gaussian Expansion method with the Illustris simulation
• The SLUGGS Survey: A comparison of total-mass profiles of early-type galaxies from observations and cosmological simulations, to $\sim$4 effective radii
• Early-type galaxy density profiles from IllustrisTNG: I. Galaxy correlations and the impact of baryons
• Galaxy density profiles and shapes -- II. selection biases in strong lensing surveys
• Purely dry mergers do not explain the observed evolution of massive early-type galaxies since z = 1
• The stellar population and initial mass function of NGC 1399 with MUSE
• Linear relation between HI circular velocity and stellar velocity dispersion in early-type galaxies, and slope of the density profiles
• SDSS--IV MaNGA : The Inner Density Slopes of nearby galaxies
• Early-type galaxy density profiles from IllustrisTNG: II. Evolutionary trend of the total density profile
• Galaxy halo truncation and Giant Arc Surface Brightness Reconstruction in the Cluster MACSJ1206.2-0847
• The Kormendy Relation of Galaxies in the Frontier Fields Clusters: Abell S1063 and MACS J1149.5+2223
• Tightly coupled morpho-kinematic evolution for massive star-forming and quiescent galaxies across 7 Gyr of cosmic time
• The Lenses Structure & Dynamics Survey: The internal structure and evolution of E/S0 galaxies and the determination of H_0 from time-delay systems
• Starburst triggered by compressive tides in galaxy mergers

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• Hubble Asteroid Hunter: II. Identifying strong gravitational lenses in HST images with crowdsourcing
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• MaNGA DynPop -- III. Stellar dynamics versus stellar population relations in 6000 early-type and spiral galaxies: Fundamental Plane, mass-to-light ratios, total density slopes, and dark matter fractions
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• The MAGPI Survey: Impact of environment on the total internal mass distribution of galaxies in the last 5 Gyr
• AGEL: Is the Conflict Real? Investigating Galaxy Evolution Models using Strong Lensing at 0.3 < z < 0.9
• Galaxy shapes in Magneticum. I. Connecting stellar and dark matter shapes to dynamical and morphological galaxy properties and the large-scale structure
• Comparing Lensing and Stellar Orbital Models of a Nearby Massive Strong-Lens Galaxy
• Strong Lensing and $H_0$
• Early-type galaxy density profiles from IllustrisTNG: III. Effects on outer kinematic structure
• Total mass slopes and enclosed mass constrained by globular cluster system dynamics
• MaNGA DynPop. VII. A Unified Bulge-Disk-Halo Model for Explaining Diversity in Circular Velocity Curves of 6000 Spiral and Early-Type Galaxies
• Exploring the possible evolution of the mass density power-law index of strong gravitational lenses with a model-independent method
• Systematics in ETG Mass Profile Modelling: Strong Lensing & Stellar Dynamics
• The catalogue of virtual early-type galaxies from IllustrisTNG: validation and real observation consistency
• New Dynamical Measurements from a Lensed Quasar Sample: Joint Analysis Constrains the Mass Profile Evolution of Lens Galaxies