Central mass-to-light ratios and dark matter fractions in early-type galaxies

Abstract

Dynamical studies of local ETGs and the Fundamental Plane point to a strong dependence of M/L ratio on luminosity (and stellar mass) with a relation of the form $M/L\propto L^{\gamma }$. The "tilt" $\gamma$ may be caused by various factors, including stellar population properties, IMF, rotational support, luminosity profile non-homology and dark matter (DM) fraction. We evaluate the impact of all these factors using a large uniform dataset of local ETGs from Prugniel & Simien (1997). We take particular care in estimating the stellar masses, using a general star formation history, and comparing different population synthesis models. We find that the stellar M/L contributes little to the tilt. We estimate the total M/L using simple Jeans dynamical models, and find that adopting accurate luminosity profiles is important but does not remove the need for an additional tilt component, which we ascribe to DM. We survey trends of the DM fraction within one effective radius, finding it to be roughly constant for galaxies fainter than $M_B\sim -20.5$, and increasing with luminosity for the brighter galaxies; we detect no significant differences among S0s and fast- and slow-rotating ellipticals. We construct simplified cosmological mass models and find general consistency, where the DM transition point is caused by a change in the relation between luminosity and effective radius. A more refined model with varying galaxy star formation efficiency suggests a transition from total mass profiles (including DM) of faint galaxies distributed similarly to the light, to near-isothermal profiles for the bright galaxies. These conclusions are sensitive to various systematic uncertainties which we investigate in detail, but are consistent with the results of dynamics studies at larger radii.

21 Pages, 19 figures, accepted for publication on MNRAS. Version including revisions after the referee's report and an updated list of references

References in corpus (40)

• Structure and Formation of Elliptical and Spheroidal Galaxies
• The SAURON project -- X. The orbital anisotropy of elliptical and lenticular galaxies: revisiting the (V/sigma,epsilon) diagram with integral-field stellar kinematics
• Star formation in AEGIS field galaxies since z=1.1 . Staged galaxy formation, and a model of mass-dependent gas exhaustion
• Evidence for TP-AGB stars in high redshift galaxies, and their effect on deriving stellar population parameters
• The galaxy stellar mass-star formation rate relation: Evidence for an evolving stellar initial mass function?
• Towards a Concordant Model of Halo Occupation Statistics
• Evidence of Cosmic Evolution of the Stellar Initial Mass Function
• The luminosities, sizes and velocity dispersions of Brightest Cluster Galaxies: Implications for formation history
• Kinematic properties of early-type galaxy haloes using planetary nebulae
• The Sloan Lens ACS Survey. VII. Elliptical Galaxy Scaling Laws from Direct Observational Mass Measurements
• Curvature in the scaling relations of early-type galaxies
• The UV properties of E+A galaxies: constraints on feedback-driven quenching of star formation
• The Star Formation Epoch of the Most Massive Early-Type Galaxies
• The PN.S Elliptical Galaxy Survey: the dark matter in NGC 4494
• Dissipationless Mergers of Elliptical Galaxies and the Evolution of the Fundamental Plane
• Uniting Old Stellar Systems: From Globular Clusters to Giant Ellipticals
• The PN.S Elliptical Galaxy Survey: Data Reduction, Planetary Nebula Catalog, and Basic Dynamics for NGC 3379
• The shape of the dark matter halo in the early-type galaxy NGC 2974
• Dissipation and the Fundamental Plane: Observational Tests
• Systematic Uncertainties in Stellar Mass Estimation for Distinct Galaxy Populations
• A More Fundamental Plane
• Dark matter scaling relations and the assembly epoch of Coma early-type galaxies
• Unveiling dark halos in lensing galaxies
• The evolution of the galaxy Red Sequence in simulated clusters and groups
• The Fundamental Plane of Early Type Galaxies in Nearby Clusters from the WINGS Database
• The Dissipative Merger Progenitors of Elliptical Galaxies
• Comparing dynamical and photometric-stellar masses of early-type galaxies at z ~ 1
• Dynamical Models of Elliptical Galaxies in z=0.5 Clusters: II. Mass-to-Light Ratio Evolution without Fundamental Plane Assumptions
• Physical interpretation of the near-infrared colours of low redshift galaxies
• The structural and photometric properties of early-type galaxies in hierarchical models
• Dynamics of the NGC 4636 Globular Cluster System - An extremely dark matter dominated galaxy?
• The SDSS-UKIDSS Fundamental Plane of Early-type Galaxies
• The Kormendy Relation for early-type galaxies. Dependence on the magnitude range
• Toward Understanding the origin of the Fundamental Plane for Early-Type Galaxies
• 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
• Gauging the dark matter fraction in a $L_{\ast }$ S0 galaxy at z=0.47 through gravitational lensing from deep HST/ACS imaging
• The effects of stellar populations on galaxy scaling relations in the 6dF Galaxy Survey
• Stellar Populations of Luminous Evolved Galaxies at z~1.5
• Dynamical and gravitational lensing properties of a new phenomenological model of elliptical galaxies

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• Globular Clusters: DNA of Early-Type galaxies?
• The X-shooter Lens Survey - II. Sample presentation and spatially resolved kinematics
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• Colour gradients of high-redshift Early-Type Galaxies from hydrodynamical monolithic models
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