LCDM-based models for the Milky Way and M31 I: Dynamical Models

Abstract

We apply standard disk formation theory with adiabatic contraction within cuspy halo models predicted by the standard LCDM cosmology. The resulting models score remarkably well when confronted with the broad range of observational data available for the Milky Way and M31 galaxies, giving a Milky Way virial mass of 1-2x10^12Msun and concentration C=12-17. We consider two types of models, in which: (A) baryons conserve angular momentum and (B) some of the angular momentum of the baryons is transferred to the dark matter. Type-A models produce good agreement with observed rotation curves and obey constraints in the solar neighborhood, but may have too much dark matter in the center to allow a fast rotating bar. The type-B models with angular momentum transport have a slightly more massive disk and less dark matter in the central part, allowing a fast rotating bar to persist. Both classes of models probably have sufficient baryonic mass in the central 3.5kpc to reproduce recent observational values of the optical depth to microlensing events towards the Galactic center. All models require that about 1/2 of all baryons expected inside the virial radius must not be in the disk or bulge. We investigate whether the range of virial masses allowed by our dynamical models is compatible with constraints from the galaxy luminosity function, and find a range of parameter space that is allowed by this constraint. We conclude that rotation curves and dynamical properties of ``normal'' high surface brightness spiral galaxies appear to be consistent with standard LCDM.

26 pages, 11 figures, submited to ApJ

References in corpus (15)

• Stellar mass-to-light ratios and the Tully-Fisher relation
• Mass Density Profiles of LSB Galaxies
• The Power Spectrum Dependence of Dark Matter Halo Concentrations
• Three Dimensional Structure of the Milky Way Disk
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• A Dark-Matter Spike at the Galactic Center?
• Revisiting the Cosmic Cooling Crisis
• Probing Dark Matter Substructure in Lens Galaxies
• Flux ratios as a probe of dark substructures in quadruple-image gravitational lenses
• Cuspy Dark-Matter Haloes and the Galaxy
• Luminous and Dark Matter in the Milky Way
• Hydrodynamic simulations of the triaxial bulge of M31
• A cosmological study of the star formation history in the solar neighbourhood
• An inner ring and the micro lensing toward the Bulge

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• Microlensing constraints on axion stars including finite lens and source size effects
• The flat density profiles of massive, and relaxed galaxy clusters
• Weighing the Galactic disk using phase-space spirals III. Probing distant regions of the disk using the Gaia EDR3 proper motion sample
• The Effect of Tidal Stripping on Composite Stellar Populations in Dwarf Spheroidal Galaxies
• Revisiting the Role of M31 in the Dynamical History of the Magellanic Clouds
• The Most Distant Stars in the Milky Way
• The Galactic potential and the asymmetric distribution of hypervelocity stars
• An empirical prediction for stellar metallicity distributions in nearby galaxies
• Gamma rays from the neutralino dark matter annihilations in the Milky Way substructures
• Deep Photometry in a Remote M31 Major Axis Field Near G1
• Weighing the Galactic disk in sub-regions of the solar neighbourhood using Gaia DR2
• Exploring the Milky Way Circumgalactic Medium in a Cosmological Context with a Semi-Analytic Model
• M2M modelling of the Galactic disc via PRIMAL: Fitting to Gaia Error Added Data
• LHAASO sensitivity for diffuse gamma-ray signals from the Galaxy
• Cosmic rays through the Higgs portal
• Constraining dark matter halo profiles and galaxy formation models using spiral arm morphology. II. Dark and stellar mass concentrations for 13 nearby face-on galaxies
• Dark matter halo response to the disk growth
• The detection of sub-solar mass dark matter halos
• Systematic uncertainties from halo asphericity in dark matter searches
• Cosmic clocks: A Tight Radius - Velocity Relationship for HI-Selected Galaxies
• Extended galactic rotational velocity profiles in $f(R)$ gravity background
• The haloes of merger remnants
• Kinematics in galactic tidal tails - A source for Hypervelocity stars?
• Spiral arm kinematics for Milky Way stellar populations
• Dark matter and dark energy accretion onto intermediate-mass black holes
• Secular evolution of galactic discs: constraints on phase-space density
• The effect of Large Magellanic Cloud on the satellite galaxy population in Milky Way analogous Galaxies
• Rogue worlds meet the dark side: revealing terrestrial-mass primordial black holes with the Nancy Grace Roman Space Telescope
• Effects of feedback on galaxies in the VELA simulations: elongation, clumps and compaction
• A useful guide for gravitational wave observers to test modified gravity models
• The Effect of Substructure on Mass Estimates of Galaxies
• A Framework for Empirical Galaxy Phenomenology: The Scatter in Galaxy Ages and Stellar Metallicities
• Can the excess in the FeXXVI Ly gamma line from the Galactic Center provide evidence for 17 keV sterile neutrinos?
• Multi-messenger constraints on dark matter annihilation into electron-positron pairs
• Luminosity distance in Swiss cheese cosmology with randomized voids and galaxy halos
• Structure formation in a mixed dark matter model with decaying sterile neutrino: the 3.5 keV X-ray line and the Galactic substructure
• Constraints on sterile neutrino dark matter from XMM--Newton observation of M33
• GalMod: a Galactic synthesis population model
• Unstable Gravitino Dark Matter - Prospects for Indirect and Direct Detection
• Energy transfer from baryons to dark matter as a unified solution to small-scale structure issues of the $\Lambda$CDM model
• The Galactic One-Way Shapiro Delay to PSR B1937+21
• A Deep Photometric Look at Two of Andromeda's Dwarf Spheroidals: X and XVII
• On the Doppler effect for light from orbiting sources in Kerr-type metrics
• The time-scales of major mergers from simulations of isolated binary galaxy collisions
• Galactic Shapiro Delay to the Crab Pulsar and limit on Einstein's Equivalence Principle Violation
• The dark matter halo density profile, spiral arm morphology and black hole mass of M33
• The influence of dark matter halo onto the evolution of a supermassive black hole
• The luminosity function of diverse satellite galaxy systems
• The influence of star formation history on the gravitational wave signal from close double degenerates in the thin disc
• Are galactic disks dynamically influenced by dust?
• Q-Monopole-Ball: A Topological and Nontopological Soliton
• Pressure from dark matter annihilation and the rotation curve of spiral galaxies
• Star formation history, double degenerates and type Ia supernovae in the thin disc
• The transformation and quenching of simulated gas-rich dwarf satellites within a group environment
• Gamma rays from Dark Matter Annihilation in the Central Region of the Galaxy
• On the dark matter haloes inner structure and galaxy morphology
• Solo dwarfs IV: Comparing and contrasting satellite and isolated dwarf galaxies in the Local Group
• Supermassive black hole spin-flip during the inspiral
• On the Stability of Tidal Streams
• Signals of Axion Like Dark Matter in Time Dependent Polarization of Light
• Comparing readout strategies to directly detect dark matter
• Superheavy dark matter as UHECR source versus the SUGAR data
• The contribution of red dwarfs and white dwarfs to the halo dark matter
• Future merger of the Milky Way with the Andromeda galaxy and the fate of their supermassive black holes
• Galacto-forensic of LMC's orbital history as a probe for the dark matter potential in the outskirt of the Galaxy
• Kinematics and Metallicity of Red Giant Branch Stars in the Northeast Shelf of M31
• On the vertical equilibrium of the local Galactic disk and the search for disk dark matter
• Extragalactic and galactic gamma-rays and neutrinos from annihilating dark matter
• The tangential velocity of M31: CLUES from constrained simulations
• Observing the Sunyaev-Zel'dovich Effect Closer to Home
• Consequences of cosmic microwave background-regulated star formation
• Relaxation of dark matter halos: how to match observational data?
• The viability of ultralight bosonic dark matter in dwarf galaxies
• How to calculate dark matter direct detection exclusion limits that are consistent with gamma rays from annihilation in the Milky Way halo
• Dynamical galactic effects induced by stable vortex structure in bosonic dark matter
• The tilting rate of the Milky Way's disc
• Discovery of a Planar Black Hole Mass Scaling Relation for Spiral Galaxies
• New Light on Dark Extended Lenses with the Roman Space Telescope
• On the Adromeda to Milky Way mass-ratio
• The coevolution of the velocity and mass functions of galaxies and dark haloes
• Formation and Evolution of Disk Galaxies
• The contribution of Oxygen-Neon white dwarfs to the MACHO content of the Galactic Halo
• Type Ia Supernova Magnitude Step from the local Dark Matter Environment
• Kinematics of dwarf galaxies in gas-rich groups, and the survival and detectability of tidal dwarf galaxies
• Accretion of Small Satellites and Gas Inflows in a Disc Galaxy
• Galaxy Formation and Dark Matter
• Galaxy Bulges As Tests of CDM vs MOND in Strong Gravity
• Camouflaged galactic CMB foregrounds: total and polarized contributions of the kinetic Sunyaev Zeldovich effect
• Enhancing Direct Detection of Higgsino Dark Matter
• Gamma rays from muons from WIMPs: Implementation of radiative muon decays for dark matter analyses
• On the dwarf galaxies rotation curves diversity problem
• Spatial segregation impact on star formation in nearby dwarf spheroidal galaxies
• Morphological Tests of the Pulsar and Dark Matter Interpretations of the WMAP Haze
• The distribution of annihilation luminosities in dark matter substructure
• Disk Galaxy Evolution Along the Hubble Sequence
• Angular momentum transfer and the size - mass relation in early - type galaxies
• Off-centred dark matter halo leading to strong central disc lopsidedness
• Local reionizations histories with merger tree of HII regions
• The Bulgeless Seyfert/LINER Galaxy NGC 3367: Disk, Bar, Lopsidedness and Environment
• Measuring the Matter Density of the Galactic Disk Using Stellar Streams
• The OGLE-II event sc5_2859 -- An example of disk-disk microlensing
• On the origin of the $10^7$ K hot emitting gas in the Circumgalactic medium of the Milky Way
• A cosmologically motivated description of the dark matter halo profile for the Low Surface Brightness Galaxy, Malin 1
• Are the red halos of galaxies made of low-mass stars? Constraints from subdwarf star counts in the Milky Way halo
• How to Detect Big Bang Relic Neutrinos?
• The Kinetic Sunyaev-Zel'dovich effect of the Milky Way Halo
• The galaxy halo formation in the absence of violent relaxation and a universal density profile of the halo center
• Semi analytical description of formation of galaxies and clusters of galaxies
• The Three Dimensional Structural Shape of the Gravitational Potential in the Local Group
• Glow in the Dark Matter: Observing galactic halos with scattered light
• Self-interacting dark matter constraints in a thick dark disk scenario
• A lower bound on the Milky Way mass from general phase-space distribution function models
• CMB B-mode polarization from Thomson scattering in the local universe
• Cluster density slopes from Dark Matter-Baryons Energy Transfer
• Lethal radiation from nearby supernovae helps to explain the small cosmological constant
• Radio Signal by Galactic Dark Matter
• Barions and $\Lambda$CDM Model Problems
• Population Studies of the Unidentified EGRET Sources
• A luminosity constraint on the origin of unidentified high energy sources
• Revisiting the Proper Motions of M31 and M33 Using Massive Supergiant Stars with Gaia DR3
• The density profile of Milky Way dark matter halo constrained from the OGLE microlensing sky map
• Machine Learning the Dark Matter Halo Mass of Milky Way-Like Systems
• Motion of halo compact objects in the gravitational potential of a low-mass model of the Galaxy
• Cosmic positron excess: is the dark matter solution a good bet?
• Impact of baryons on the population of Galactic subhalos and implications for dark matter searches
• Red Halos of Galaxies - Reservoirs of Baryonic Dark Matter?
• Correlated gravitational wave and microlensing signals of macroscopic dark matter
• Milky Way globular cluster dynamics: are they preferentially co-rotating?
• Effects of the Planar Galactic Tides and Stellar Mass on Comet Cloud Dynamics
• Effect of dark matter halos on the orbital and escape dynamics of barred galaxies
• A Mass Dependent Density Profile from Dwarfs to Clusters
• TeV Dark Matter detection by Atmospheric Cerenkov Telescopes
• Dwarf Galaxy Number Counts within 25 Mpc: Predictions from Local Group Analogues in TNG50
• The odd primordial halo of the Milky Way implied by Gaia. A shallow core, but a steep decline
• The vertical structure of the stellar disk in NGC 551
• Dark Matter Density in Disk Galaxies
• Relic neutrino clustering and implications for their detection