The mass of the Milky Way from satellite dynamics

Abstract

We present and apply a method to infer the mass of the Milky Way (MW) by comparing the dynamics of MW satellites to those of model satellites in the EAGLE cosmological hydrodynamics simulations. A distribution function (DF) for galactic satellites is constructed from EAGLE using specific angular momentum and specific energy, which are scaled so as to be independent of host halo mass. In this 2-dimensional space, the orbital properties of satellite galaxies vary according to the host halo mass. The halo mass can be inferred by calculating the likelihood that the observed satellite population is drawn from this DF. Our method is robustly calibrated on mock EAGLE systems. We validate it by applying it to the completely independent suite of 30 AURIGA high-resolution simulations of MW-like galaxies: the method accurately recovers their true mass and associated uncertainties. We then apply it to ten classical satellites of the MW with 6D phase-space measurements, including updated proper motions from the GAIA satellite. The mass of the MW is estimated to be $M_{200}^{\text{MW}}=1.17_{-0.15}^{+0.21}\times 10^{12}{M}_{\odot }$ (68\% confidence limits). We combine our total mass estimate with recent mass estimates in the inner regions of the Galaxy to infer an inner dark matter (DM) mass fraction $M^{\text{DM}}(<20\mathrm{kpc})/{\mathrm{M}}_{200}^{\text{DM}}=0.12$ which is typical of $\sim 10^{12}{M}_{\odot }$ $\Lambda$CDM haloes in hydrodynamical galaxy formation simulations. Assuming an NFW profile, this is equivalent to a halo concentration of $c_{200}^{\text{MW}}=10.9_{-2.0}^{+2.6}$.

arXiv comment14 pages, 15 figures, submitted to MNRAS, comments are welcomed

References in corpus (92)

• A Universal Density Profile from Hierarchical Clustering
• Gaia Data Release 2. Summary of the contents and survey properties
• The Structure of Cold Dark Matter Halos
• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• Dark Matter Substructure in Galactic Halos
• Where are the missing galactic satellites?
• Local Kinematics and the Local Standard of Rest
• The Aquarius Project: the subhalos of galactic halos
• The observed properties of dwarf galaxies in and around the Local Group
• Planck 2013 results. I. Overview of products and scientific results
• GADGET: A code for collisionless and gasdynamical cosmological simulations
• The EAGLE simulations of galaxy formation: calibration of subgrid physics and model variations
• Too big to fail? The puzzling darkness of massive Milky Way subhaloes
• Concentrations of Dark Halos from their Assembly Histories
• The mass distribution and gravitational potential of the Milky Way
• Response of dark matter halos to condensation of baryons: cosmological simulations and improved adiabatic contraction model
• Mass models of the Milky Way
• The statistics of LCDM Halo Concentrations
• 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
• The RAVE Survey: Constraining the Local Galactic Escape Speed
• Gaia Data Release 2: Kinematics of globular clusters and dwarf galaxies around the Milky Way
• The Auriga Project: the properties and formation mechanisms of disc galaxies across cosmic time
• AGAMA: Action-based galaxy modelling architecture
• The properties of warm dark matter haloes
• Third-Epoch Magellanic Cloud Proper Motions I: HST/WFC3 data and Orbit Implications
• Constraining the Milky Way potential with a 6-D phase-space map of the GD-1 stellar stream
• Baryon effects on the internal structure of LCDM halos in the EAGLE simulations
• The Present and Future Mass of the Milky Way Halo
• The Masses of the Milky Way and Andromeda galaxies
• The RAVE survey: the Galactic escape speed and the mass of the Milky Way
• The dark nemesis of galaxy formation: why hot haloes trigger black hole growth and bring star formation to an end
• The Mass-Concentration-Redshift Relation of Cold Dark Matter Halos
• Gaia DR2 Proper Motions of Dwarf Galaxies within 420 kpc: Orbits, Milky Way Mass, Tidal Influences, Planar Alignments, and Group Infall
• "Skinny Milky Way, Please", says Sagittarius
• Masses for the Local Group and the Milky Way
• The E-MOSAICS Project: simulating the formation and co-evolution of galaxies and their star cluster populations
• A timing constraint on the (total) mass of the Large Magellanic Cloud
• On the Shoulders of Giants: Properties of the Stellar Halo and the Milky Way Mass Distribution
• The Milky Way's rotation curve out to 100 kpc and its constraint on the Galactic mass distribution
• The Space Motion of Leo I: The Mass of the Milky Way's Dark Matter Halo
• Globular Cluster Streams as Galactic High-Precision Scales - The Poster Child Palomar 5
• The Missing Massive Satellites of the Milky Way
• Kinematics of the stellar halo and the mass distribution of the Milky Way using BHB stars
• And yet it moves: The dangers of artificially fixing the Milky Way center of mass in the presence of a massive Large Magellanic Cloud
• Co-orbiting satellite galaxy structures are still in conflict with the distribution of primordial dwarf galaxies
• The Mass Profile of the Galaxy to 80 kpc
• Constraining the WDM Particle Mass with Milky Way Satellites
• Gaia Proper Motions and Orbits of the Ultra-Faint Milky Way Satellites
• The origin of scatter in the stellar mass - halo mass relation of central galaxies in the EAGLE simulation
• The total satellite population of the Milky Way
• The Space Motion of Leo I: Hubble Space Telescope Proper Motion and Implied Orbit
• Broken degeneracies: the rotation curve and velocity anisotropy of the Milky Way halo
• On the origin of cold dark matter halo density profiles
• Baryonic impact on the dark matter distribution in Milky Way-size galaxies and their satellites
• The Orbit of the Orphan Stream
• The escape speed curve of the Galaxy obtained from Gaia DR2 implies a heavy Milky Way
• Statistics of Satellite Galaxies Around Milky Way-Like Hosts
• Estimating the dark matter halo mass of our Milky Way using dynamical tracers
• Satellites of LMC-Mass Dwarfs: Close Friendships Ruined by Milky Way Mass Halos
• The Mass Distribution and Assembly of the Milky Way from the Properties of the Magellanic Clouds
• The Copernicus Complexio: a high-resolution view of the small-scale Universe
• Planes of satellite galaxies: when exceptions are the rule
• Not too big, not too small: the dark halos of the dwarf spheroidals in the Milky Way
• Absolute HST Proper Motion (HSTPROMO) of Distant Milky Way Globular Clusters: Galactocentric Space Velocities and the Milky Way Mass
• Dipping Our Toes in the Water: First Models of GD-1 as a Stream
• New Mass Estimators for Tracer Populations
• Milky Way mass constraints from the Galactic satellite gap
• The multiplicity and anisotropy of galactic satellite accretion
• Aurigaia: mock Gaia DR2 stellar catalogues from the Auriga cosmological simulations
• A centrally heated dark halo for our Galaxy
• The Orbital Ellipticity of Satellite Galaxies and the Mass of the Milky Way
• The imprint of cosmic reionisation on the luminosity function of galaxies
• Bayesian Mass Estimates of the Milky Way II: The dark and light sides of parameter assumptions
• Bailing Out the Milky Way: Variation in the Properties of Massive Dwarfs Among Galaxy-Sized Systems
• Estimating the Mass of the Milky Way Using the Ensemble of Classical Satellite Galaxies
• Orbits of massive satellite galaxies: II. Bayesian Estimates of the Milky Way and Andromeda masses using high precision astrometry and cosmological simulations
• Constraining Milky Way mass with Hypervelocity Stars
• Joint constraints on the Galactic dark matter halo and Galactic Centre from hypervelocity stars
• Subhalo statistics of galactic halos: beyond the resolution limit
• Evolution of LMC/M33-mass dwarf galaxies in the EAGLE simulation
• Satellites in MW-like hosts: Environment dependence and close pairs
• The tangential velocity excess of the Milky Way satellites
• Estimating the Galactic Mass Profile in the Presence of Incomplete Data
• Proper Motion of the Leo II Dwarf Galaxy Based On Hubble Space Telescope Imaging
• Modelling the Milky Way's globular cluster system
• The orbital PDF: general inference of the gravitational potential from steady-state tracers
• What to expect from dynamical modelling of galactic haloes II: the spherical Jeans equation
• The orbital PDF: the dynamical state of Milky Way sized haloes and the intrinsic uncertainty in the determination of their masses
• Determination of Dark Matter Halo Mass from Dynamics of Satellite Galaxies
• What galaxy masses perturb the local cosmic expansion?
• What to expect from dynamical modelling of galactic haloes
• The Effect of Substructure on Mass Estimates of Galaxies

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• The oblateness of the Milky Way dark matter halo from the stellar streams of NGC 3201, M68, and Palomar 5
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• COZMIC. I. Cosmological Zoom-in Simulations with Initial Conditions Beyond Cold Dark Matter
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• Accurate Computation of the Screening of Scalar Fifth Forces in Galaxies
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• When Leaving the Solar System: Dark Matter Makes a Difference
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• The local dark matter distribution in self-interacting dark matter halos
• Auriga Streams I: disrupting satellites surrounding Milky Way-mass haloes at multiple resolutions
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• Measuring the local Dark Matter density in the laboratory
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• Dark Matter Freeze-In and Small-Scale Observables: Novel Mass Bounds and Viable Particle Candidates
• Investigating the Dark Matter Halo of NGC 5128 using a Discrete Dynamical Model
• On the Galactic radio signal from stimulated decay of axion dark matter
• Gamma rays from dark matter spikes in EAGLE simulations
• Observing EAGLE galaxies with JWST: predictions for Milky Way progenitors and their building blocks
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