The central dark matter content of early-type galaxies: scaling relations and connections with star formation histories

Abstract

We examine correlations between the masses, sizes, and star formation histories for a large sample of low-redshift early-type galaxies, using a simple suite of dynamical and stellar populations models. We confirm an anti-correlation between size and stellar age, and survey for trends with the central content of dark matter (DM). An average relation between central DM density and galaxy size of <rho_DM> ~ Reff^-2 provides the first clear indication of cuspy DM haloes in these galaxies -- akin to standard LCDM haloes that have undergone adiabatic contraction. The DM density scales with galaxy mass as expected, deviating from suggestions of a universal halo profile for dwarf and late-type galaxies. We introduce a new fundamental constraint on galaxy formation by finding that the central DM fraction decreases with stellar age. This result is only partially explained by the size-age dependencies, and the residual trend is in the opposite direction to basic DM halo expectations. Therefore we suggest that there may be a connection between age and halo contraction, and that galaxies forming earlier had stronger baryonic feedback which expanded their haloes, or else lumpier baryonic accretion that avoided halo contraction. An alternative explanation is a lighter initial mass function for older stellar populations.

24 pages, 23 figures. MNRAS, submitted with minor modifications following referee report.

References in corpus (81)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• 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
• Cold streams in early massive hot haloes as the main mode of galaxy formation
• At the heart of the matter: the origin of bulgeless dwarf galaxies and Dark Matter cores
• Formation of Massive Galaxies at High Redshift: Cold Streams, Clumpy Disks and Compact Spheroids
• The Growth of Massive Galaxies Since z=2
• The Milky Way's Circular Velocity Curve to 60 kpc and an Estimate of the Dark Matter Halo Mass from Kinematics of ~2400 SDSS Blue Horizontal Branch Stars
• Concentration, Spin and Shape of Dark Matter Haloes as a Function of the Cosmological Model: WMAP1, WMAP3 and WMAP5 results
• Galaxy Evolution from Halo Occupation Distribution Modeling of DEEP2 and SDSS Galaxy Clustering
• A common mass scale for satellite galaxies of the Milky Way
• The initial mass function of early-type galaxies
• The Structure & Dynamics of Massive Early-type Galaxies: On Homology, Isothermality and Isotropy inside one Effective Radius
• Stellar Feedback in Dwarf Galaxy Formation
• The Gemini Deep Deep Survey: III. The abundance of massive galaxies 3-6 billion years after the Big Bang
• Bulge Formation by the Coalescence of Giant Clumps in Primordial Disk Galaxies
• The Sloan Lens ACS Survey. IX. Colors, Lensing and Stellar Masses of Early-type Galaxies
• A Revised Model for the Formation of Disk Galaxies: Low Spin and Dark-Halo Expansion
• Discriminating Between the Physical Processes that Drive Spheroid Size Evolution
• Kinematic properties of early-type galaxy haloes using planetary nebulae
• The Causes of Halo Shape Changes Induced by Cooling Baryons: Disks Versus Substructures
• Dynamical modelling of luminous and dark matter in 17 Coma early-type galaxies
• Erasing Dark Matter Cusps in Cosmological Galactic Halos with Baryons
• Baryonic Pinching of Galactic Dark Matter Halos
• Analysis of Rotation Curves in the framework of R^n gravity
• Universality of galactic surface densities within one dark halo scale-length
• Dynamical masses of early-type galaxies at z~2: Are they truly superdense?
• Spatially resolved spectroscopy of early-type galaxies over a range in mass
• The X-Ray Concentration-Virial Mass Relation
• Dissecting the Red Sequence--I. Star Formation Histories of Quiescent Galaxies: The Color-Magnitude vs. the Color-Sigma Relation
• The PN.S Elliptical Galaxy Survey: the dark matter in NGC 4494
• Dissipationless Mergers of Elliptical Galaxies and the Evolution of the Fundamental Plane
• The SPLASH Survey: Internal Kinematics, Chemical Abundances, and Masses of the Andromeda I, II, III, VII, X, and XIV dSphs
• Dearth of dark matter or massive dark halo? Mass-shape-anisotropy degeneracies revealed by NMAGIC dynamical models of the elliptical galaxy NGC 3379
• Velocity dispersion around ellipticals in MOND
• High-redshift elliptical galaxies: are they (all) really compact?
• Radiation Feedback, Fragmentation, and the Environmental Dependence of the Initial Mass Function
• X-ray Group and cluster mass profiles in MOND: Unexplained mass on the group scale
• The Supermassive Black Hole and Dark Matter Halo of NGC 4649 (M60)
• Dark and Baryonic Matter in Bright Spiral Galaxies: II. Radial Distributions for 34 Galaxies
• Dissipation and the Fundamental Plane: Observational Tests
• The Baryon Fractions and Mass-to-Light Ratios of Early-Type Galaxies
• Evolution in the structural properties of early-type Brightest Cluster Galaxies at small lookback time and dependence on the environment
• The origin of failed subhaloes and the common mass scale of the Milky Way satellite galaxies
• The population of early-type galaxies at 1<z<2 - New clues on their formation and evolution
• Chemical evolution of local galaxies in a hierarchical model
• A More Fundamental Plane
• The slope of the mass profile and the tilt of the fundamental plane in early-type galaxies
• Dark Matter Halos of Disk Galaxies: Constraints from the Tully-Fisher Relation
• The Kinematics of the Globular Cluster System of NGC 5128 with a New, Large Sample of Radial Velocity Measurements
• Unveiling dark halos in lensing galaxies
• The Varied Fates of z~2 Star-forming Galaxies
• Dry mergers and the formation of early-type galaxies: constraints from lensing and dynamics
• SAURON's Challenge for the Major Merger Scenario of Elliptical Galaxy Formation
• The dark matter halo of NGC 1399 - CDM or MOND?
• The Dissipative Merger Progenitors of Elliptical Galaxies
• The Stellar Mass Spectrum in Warm and Dusty Gas: Deviations from Salpeter in the Galactic Centre and in Circum-Nuclear Starburst Regions
• Global Properties of the Globular Cluster Systems of Four Spiral Galaxies
• Central mass and luminosity of Milky Way satellites in the LCDM model
• Hydrostatic Gas Constraints on Supermassive Black Hole Masses: Implications for Hydrostatic Equilibrium and Dynamical Modelling in a Sample of Early-Type Galaxies
• The structural and photometric properties of early-type galaxies in hierarchical models
• The impact of baryons on dark matter haloes
• Metallicity Gradients at Large Galactocentric Radii Using the Near-infrared Calcium Triplet
• The joint evolution of baryons and dark matter haloes
• Sizes and ages of SDSS ellipticals: Comparison with hierarchical galaxy formation models
• Dissipational versus Dissipationless Galaxy Formation and the Dark Matter Content of Galaxies
• The early-type galaxies NGC 1407 and NGC 1400 - II: star formation and chemical evolutionary history
• How Massive are Massive Compact Galaxies?
• On the Initial Mass Function and tilt of the Fundamental Plane of massive early-type galaxies
• Predicting the Properties of the Remnants of Dissipative Galaxy Mergers
• Halo density reduction by baryonic settling?
• On the common mass scale of the Milky Way satellites
• The Star Formation Histories of Red-Sequence Galaxies, Mass-to-Light Ratios and the Fundamental Plane
• MOND and the lensing Fundamental Plane: No need for dark matter on galaxy scales
• Variations in Integrated Galactic Initial Mass Functions due to Sampling Method and Cluster Mass Function
• Incompatibility of Rotation Curves with Gravitational Lensing for TeVeS
• A New Empirical Method to Infer the Starburst History of the Universe from Local Galaxy Properties
• The Mid-Infrared Fundamental Plane of Early-Type Galaxies
• Clues on Regularity in the Structure and Kinematics of Elliptical Galaxies from Self-consistent Hydrodynamical Simulations: the Dynamical Fundamental Plane
• Origin of rotational kinematics in the globular cluster system of M31: A new clue to the bulge formation
• Galaxy Bulges As Tests of CDM vs MOND in Strong Gravity
• The Spatial Distributions of Red and Blue Globular Clusters in Major Dry Merger Remnants

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• Dark Matter Contraction and the Stellar Content of Massive Early-type Galaxies: Disfavoring "Light" Initial Mass Functions
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• The Influence of Dark Matter Halos on Dynamical Estimates of Black Hole Mass: Ten New Measurements for High-sigma Early-Type Galaxies
• Elliptical galaxy masses out to five effective radii: the realm of dark matter
• Gas depletion in Local Group dwarfs on ~250 kpc scales: Ram pressure stripping assisted by internal heating at early times
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• Testing Yukawa-like potentials from f(R)-gravity in elliptical galaxies
• Velocity Dispersion, Size, Sérsic Index and $D_{n}4000$: The Scaling of Stellar Mass with Dynamical Mass for Quiescent Galaxies
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• SEAGLE--III: Towards resolving the mismatch in the dark-matter fraction in early-type galaxies between simulations and observations
• The insight into the dark side. I. The pitfalls of the dark halo parameters estimation
• CASCO: Cosmological and AStrophysical parameters from Cosmological simulations and Observations -- I. Constraining physical processes in local star-forming galaxies
• The dark matter halo concentration and stellar initial mass function of a CASSOWARY group
• The central dark matter fraction of massive early-type galaxies
• On the polytropic Bondi accretion in two-component galaxy models with a central massive BH
• The quantity of dark matter in early-type galaxies and its relation to the environment
• Detecting Adiabatic Contraction in Rotation Curves
• A test of invariance of dark matter halo surface density using multiwavelength mock galaxy catalogues
• Optical+NIR analysis of a Newly Confirmed Einstein ring at z$\sim$1 from the Kilo-Degree Survey: Dark matter fraction, total and dark matter density slope and IMF
• The catalogue of virtual early-type galaxies from IllustrisTNG: validation and real observation consistency
• Method for tilt correction of calibration lines in high resolution spectra