Origin of the Local Group satellite planes

Abstract

We attempt to understand the planes of satellite galaxies orbiting the Milky Way (MW) and M31 in the context of Modified Newtonian Dynamics (MOND), which implies a close MW-M31 flyby occurred $\approx 8$ Gyr ago. Using the timing argument, we obtain MW-M31 trajectories consistent with cosmological initial conditions and present observations. We adjust the present M31 proper motion within its uncertainty in order to simulate a range of orbital geometries and closest approach distances. Treating the MW and M31 as point masses, we follow the trajectories of surrounding test particle disks, thereby mapping out the tidal debris distribution. Around each galaxy, the resulting tidal debris tends to cluster around a particular orbital pole. We find some models in which these preferred spin vectors align fairly well with those of the corresponding observed satellite planes. The radial distributions of material in the simulated satellite planes are similar to what we observe. Around the MW, our best-fitting model yields a significant fraction (0.22) of counter-rotating material, perhaps explaining why Sculptor counter-rotates within the MW satellite plane. In contrast, our model yields no counter-rotating material around M31. This is testable with proper motions of M31 satellites. In our best model, the MW disk is thickened by the flyby 7.65 Gyr ago to a root mean square height of 0.75 kpc. This is similar to the observed age and thickness of the Galactic thick disk. Thus, the MW thick disk may have formed together with the MW and M31 satellite planes during a past MW-M31 flyby.

arXiv comment26 pages, 12 figures, 10 tables. Revised in response to referee comments and submitted to the Monthly Notices of the Royal Astronomical Society in this form

References in corpus (136)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Planck 2015 results. XIII. Cosmological parameters
• Cosmological Hydrodynamics with Adaptive Mesh Refinement: a new high resolution code called RAMSES
• The observed properties of dwarf galaxies in and around the Local Group
• The Milky Way Tomography with SDSS: I. Stellar Number Density Distribution
• An absorption profile centred at 78 megahertz in the sky-averaged spectrum
• The mass distribution and gravitational potential of the Milky Way
• Modified Newtonian Dynamics (MOND): Observational Phenomenology and Relativistic Extensions
• Mass models of the Milky Way
• An eclipsing binary distance to the Large Magellanic Cloud accurate to 2 per cent
• Chemical Cartography with APOGEE: Metallicity Distribution Functions and the Chemical Structure of the Milky Way Disk
• The remnants of galaxy formation from a panoramic survey of the region around M31
• New Understanding of Large Magellanic Cloud Structure, Dynamics and Orbit from Carbon Star Kinematics
• Are the Magellanic Clouds on their First Passage about the Milky Way?
• Emergent Gravity and the Dark Universe
• A Vast Thin Plane of Co-rotating Dwarf Galaxies Orbiting the Andromeda Galaxy
• The Star Formation Histories of Local Group Dwarf Galaxies I. Hubble Space Telescope / Wide Field Planetary Camera 2 Observations
• Third-Epoch Magellanic Cloud Proper Motions I: HST/WFC3 data and Orbit Implications
• A direct dynamical measurement of the Milky Way's disk surface density profile, disk scale length, and dark matter profile at 4 kpc < R < 9 kpc
• Dipole Anisotropy in the COBE DMR First-Year Sky Maps
• The great disk of Milky-Way satellites and cosmological sub-structures
• One Law To Rule Them All: The Radial Acceleration Relation of Galaxies
• The VPOS: a vast polar structure of satellite galaxies, globular clusters and streams around the Milky Way
• Modified Newtonian Dynamics in the Milky Way
• Quasi-linear formulation of MOND
• Third-Epoch Magellanic Cloud Proper Motions II: The Large Magellanic Cloud Rotation Field in Three Dimensions
• The Local Group and other neighboring galaxy groups
• Severely Constraining Dark Matter Interpretations of the 21-cm Anomaly
• The dark matter crisis: falsification of the current standard model of cosmology
• Dark matter and visible baryons in M33
• Galaxy Groups within 3500 km s${}^{-1}$
• The Distance to NGC 5128 (Centaurus A)
• Precession of the Sagittarius stream
• HI kinematics and dynamics of Messier 31
• Modeling the Radio Background from the First Black Holes at Cosmic Dawn: Implications for the 21 cm Absorption Amplitude
• A Novel Test of the Modified Newtonian Dynamics with Gas Rich Galaxies
• The Luminosity Profile and Structural Parameters of the Andromeda Galaxy
• The Modified Dynamics as a Vacuum Effect
• Galaxies as simple dynamical systems: observational data disfavor dark matter and stochastic star formation
• The spatial distribution of the Milky Way and Andromeda satellite galaxies
• Confirmation of Faint Dwarf Galaxies in the M81 Group
• A whirling plane of satellite galaxies around Centaurus A challenges cold dark matter cosmology
• Kinematics of the stellar halo and the mass distribution of the Milky Way using BHB stars
• Dwarf Galaxy Planes: the discovery of symmetric structures in the Local Group
• The rotationally stabilized VPOS and predicted proper motions of the Milky Way satellite galaxies
• Co-orbiting satellite galaxy structures are still in conflict with the distribution of primordial dwarf galaxies
• The orbital poles of Milky Way satellite galaxies: a rotationally supported disc-of-satellites
• The PAndAS view of the Andromeda satellite system - II. Detailed properties of 23 M31 dwarf spheroidal galaxies
• The dominant epoch of star formation in the Milky Way formed the thick disc
• Thickening of galactic disks through clustered star formation
• The Geometric Distance and Proper Motion of the Triangulum Galaxy (M33)
• Ram Pressure Stripping of the Large Magellanic Cloud's Disk as a Probe of the Milky Way's Circumgalactic Medium
• Extended HI Rotation Curve and Mass Distribution of M31
• Do dwarf galaxies form in tidal tails?
• The Planes of Satellite Galaxies Problem, Suggested Solutions, and Open Questions
• Local Group Dwarf Spheroidals: Correlated Deviations from the Baryonic Tully-Fisher Relation
• Three-Dimensional Distribution of the ISM in the Milky Way Galaxy: III. The Total Neutral Gas Disk
• Orbits of Massive Satellite Galaxies: I. A Close Look at the Large Magellanic Cloud and a New Orbital History for M33
• The vast thin plane of M31 co-rotating dwarfs: an additional fossil signature of the M31 merger and of its considerable impact in the whole Local Group
• Probing the isotropy of cosmic acceleration traced by Type Ia supernovae
• A dynamical model of the local cosmic expansion
• Evidence for a Massive, Extended Circumgalactic Medium Around the Andromeda Galaxy
• The M31 Velocity Vector. III. Future Milky Way-M31-M33 Orbital Evolution, Merging, and Fate of the Sun
• Andromeda Dwarfs in Light of MOND. II. Testing Prior Predictions
• A thousand shadows of Andromeda: rotating planes of satellites in the Millennium-II cosmological simulation
• The Rotation Curve of the Large Magellanic Cloud and the Implications for Microlensing
• Discs of Satellites: the new dwarf spheroidals
• Escaping from MOND
• A statistical investigation of the mass discrepancy-acceleration relation
• Lacerta I and Cassiopeia III: Two luminous and distant Andromeda satellite dwarf galaxies found in the 3π Pan-STARRS1 survey
• A new stellar chemo-kinematic relation reveals the merger history of the Milky Way disc
• The Magellanic Stream System: I. Ram-pressure tails and the relics of the collision between the Magellanic Clouds
• The new Milky Way satellites: alignment with the VPOS and predictions for proper motions and velocity dispersions
• Phantom of RAMSES (POR): A new Milgromian dynamics N-body code
• The age-velocity dispersion relation of the Galactic discs from LAMOST-Gaia data
• The M101 group complex: new dwarf galaxy candidates and spatial structure
• Making Counter-Orbiting Tidal Debris: The Origin of the Milky Way Disc of Satellites
• On the persistence of two small-scale problems in ΛCDM
• NIHAO project II: Halo shape, phase-space density and velocity distribution of dark matter in galaxy formation simulations
• Constraining the orbital history of the Magellanic Clouds: A new bound scenario suggested by the tidal origin of the Magellanic Stream
• A Study of Cepheids in M81 with the Large Binocular Telescope (Efficiently Calibrated with HST)
• Reproducing properties of MW dSphs as descendants of DM-free TDGs
• On the Run: mapping the escape speed across the Galaxy with SDSS
• Coincidences of Dark Energy with Dark Matter -- Clues for a Simple Alternative?
• The multiplicity and anisotropy of galactic satellite accretion
• Dynamical Modeling of Galaxy Mergers using Identikit
• Variable Stars in Local Group Galaxies. I: Tracing the Early Chemical Enrichment and Radial Gradients in the Sculptor dSph with RR Lyrae Stars
• Infrared Tip of the Red Giant Branch and Distances to the Maffei/IC 342 Group
• The Gaia-ESO Survey: a quiescent Milky Way with no significant dark/stellar accreted disc
• The scatter, residual correlations and curvature of the SPARC baryonic Tully-Fisher relation
• Automated detection of filaments in the large scale structure of the universe
• Star formation triggered by galaxy interactions in modified gravity
• A Distant Echo of Milky Way Central Activity closes the Galaxy's Baryon Census
• Model independent inference of the expansion history and implications for the growth of structure
• First Gaia Local Group Dynamics: Magellanic Clouds Proper Motion and Rotation
• Perseus I and the NGC 3109 association in the context of the Local Group dwarf galaxy structures
• Spectroscopy of the three distant Andromedan satellites Cassiopeia III, Lacerta I, and Perseus I
• Space Motions of the Dwarf Spheroidal Galaxies Draco and Sculptor based on HST Proper Motions with ~10-year Time Baseline
• A single-merger scenario for the formation of the giant stream and the warp of M31
• Signatures of the M31-M32 Galactic Collision
• The Vast Polar Structure of the Milky Way Attains New Members
• The distance to Hydra and Centaurus from surface brightness fluctuations: Consequences for the Great Attractor model
• The Role of Baryons in Creating Statistically Significant Planes of Satellites around Milky Way-Mass Galaxies
• Anisotropy in the all-sky distribution of galaxy morphological types
• MOND as a regime of quantum gravity
• Stellar streams as gravitational experiments I. The case of Sagittarius
• The mass of the Milky Way and M31 using the method of least action
• Proper Motion of the Leo II Dwarf Galaxy Based On Hubble Space Telescope Imaging
• Testing modified Newtonian dynamics in the Milky Way
• Milky Way Tomography with K and M Dwarf Stars: the Vertical Structure of the Galactic Disk
• The alignment of SDSS satellites with the VPOS: effects of the survey footprint shape
• A Plane of High Velocity Galaxies Across the Local Group
• On the Stability of Satellite Planes I: Effects of Mass, Velocity, Halo Shape and Alignment
• The Escape Velocity Curve of the Milky Way in Modified Newtonian Dynamics
• Dwarfs walking in a row. The filamentary nature of the NGC3109 association
• Understanding the internal dynamics of elliptical galaxies without non-baryonic dark matter
• Modified Kepler's Law, Escape Speed and Two-body Problem in MOND-like Theories
• The velocity field in MOND cosmology
• Quantum statistical modified entropic gravity as a theoretical basis for MOND
• ZOMG III: The effect of Halo Assembly on the Satellite Population
• Testing MOND with Local Group spiral galaxies
• Considerations on how to investigate planes of satellite galaxies
• Does Planck 2015 polarization favor high redshift reionization?
• Popping star clusters as building blocks of the Milky Way Thick Disc
• Dynamical History of the Local Group in $\Lambda$CDM
• The local standard of rest and the well in the velocity distribution
• Evidences for Collisional Dark Matter In Galaxies?
• The dipole anisotropy of WISE x SuperCOSMOS number counts
• Locally Cold Flows from Large-Scale Structure
• Strong Hydrogen Absorption at Cosmic Dawn: the Signature of a Baryonic Universe
• Dynamical History Of The Local Group In $\Lambda$CDM $\mathrm{II}$ $-$ Including External Perturbers In 3D
• Dynamics of the Local Group: the Dwarf Galaxies
• A 10,000 star spectroscopic survey of the thick disk-halo interface : Phase-space sub-structure in the thick disk
• The External Field Dominated Solution In QUMOND & AQUAL: Application To Tidal Streams
• Galactic Archaeology with RAVE: Clues to the Formation of the Thick Disk
• The nature of disk of satellites around Milky Way-like galaxies

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• From galactic bars to the Hubble tension: weighing up the astrophysical evidence for Milgromian gravity
• The Milky Way's Disk of Classical Satellite Galaxies in Light of Gaia DR2
• The KBC void and Hubble tension contradict $\Lambda$CDM on a Gpc scale $-$ Milgromian dynamics as a possible solution
• A massive blow for $\Lambda$CDM $-$ the high redshift, mass, and collision velocity of the interacting galaxy cluster El Gordo contradicts concordance cosmology
• The dwarf galaxy satellite system of Centaurus A
• MOND simulation suggests the origin of some peculiarities in the Local Group
• Testing Gravity with wide binary stars like $\alpha$ Centauri
• The distribution and morphologies of Fornax Cluster dwarf galaxies suggest they lack dark matter
• Evolution of galactic planes of satellites in the EAGLE simulation
• MOND in galaxy groups: a superior sample
• The formation of exponential disk galaxies in MOND
• 3D hydrodynamic simulations for the formation of the Local Group satellite planes
• The global stability of M33 in MOND
• A bottom-heavy initial mass function for the likely-accreted blue-halo stars of the Milky Way
• Barred spiral galaxies in modified gravity theories
• Flattened structures of dwarf satellites around massive host galaxies in the MATLAS low-to-moderate density fields
• Constraints on the star formation histories of galaxies in the Local Cosmological Volume
• Hydrodynamical structure formation in Milgromian cosmology
• Study of gravitational fields and globular cluster systems of early-type galaxies
• A correlation between the number of satellites and the baryonic bulge-to-total ratio extending beyond the Local Group
• Directly testing gravity with Proxima Centauri
• The Two Body Problem in the Presence of Dark Energy and Modified Gravity: Application to the Local Group
• On the absence of backsplash analogues to NGC 3109 in the $\Lambda$CDM framework
• Testing gravity with interstellar precursor missions
• Timing Argument take on the Milky Way and Andromeda past-encounter
• The Magellanic Clouds are very rare in the IllustrisTNG simulations
• Cosmological Principle in Newtonian Dynamics
• Globular cluster orbital decay in dwarf galaxies with MOND and CDM: Impact of supernova feedback
• Scaling relations of early-type galaxies in MOND
• Measuring Mass of Gas in Central Galaxies using weak lensing and satellite kinematics in MOND
• Overestimated inclinations of Milgromian disc galaxies: the case of the ultradiffuse galaxy AGC 114905
• The tidal features of the classical Milky Way satellites: Expected in MOND but inconsistent with cold dark matter models
• Phase transition in Modified Newtonian Dynamics (MONDian) self-gravitating systems