The hidden giant: discovery of an enormous Galactic dwarf satellite in Gaia DR2

Abstract

We report the discovery of a Milky Way satellite in the constellation of Antlia. The Antlia 2 dwarf galaxy is located behind the Galactic disc at a latitude of $b\sim 11^{\circ }$ and spans $1.26$ degrees, which corresponds to $\sim 2.9$ kpc at its distance of 130 kpc. While similar in spatial extent to the Large Magellanic Cloud, Antlia 2 is orders of magnitude fainter at $M_V=-9$ mag, making it by far the lowest surface brightness system known (at $\sim 31.9$ mag/arcsec${}^2$), $\sim 100$ times more diffuse than the so-called ultra diffuse galaxies. The satellite was identified using a combination of astrometry, photometry and variability data from \textit{Gaia} Data Release 2, and its nature confirmed with deep archival DECam imaging, which revealed a conspicuous BHB signal. We have also obtained follow-up spectroscopy using AAOmega on the AAT, identifying 159 member stars, and we used them to measure the dwarf's systemic velocity, $290.9\pm 0.5$km/s, its velocity dispersion, $5.7\pm 1.1$ km/s, and mean metallicity, [Fe/H]$=-1.4$. From these properties we conclude that Antlia 2 inhabits one of the least dense Dark Matter (DM) halos probed to date. Dynamical modelling and tidal-disruption simulations suggest that a combination of a cored DM profile and strong tidal stripping may explain the observed properties of this satellite. The origin of this core may be consistent with aggressive feedback, or may even require alternatives to cold dark matter (such as ultra-light bosons).

arXiv comment24 pages, 17 figures, 2 tables. Accepted in MNRAS. v2 :fixed RRL Distance, main results remain the same. v3 Accepted version. fixed Mv estimation, main results remain the same

References in corpus (140)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• emcee: The MCMC Hammer
• A Universal Density Profile from Hierarchical Clustering
• Galactic Stellar and Substellar Initial Mass Function
• Gaia Data Release 2. Summary of the contents and survey properties
• The Structure of Cold Dark Matter Halos
• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• The Gaia mission
• PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
• The Large Area Telescope on the Fermi Gamma-ray Space Telescope Mission
• Dwarf Galaxies of the Local Group
• Observational evidence for self-interacting cold dark matter
• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• A new extensive library of PHOENIX stellar atmospheres and synthetic spectra
• Local Kinematics and the Local Standard of Rest
• The observed properties of dwarf galaxies in and around the Local Group
• Cold and Fuzzy Dark Matter
• Ultralight scalars as cosmological dark matter
• galpy: A Python Library for Galactic Dynamics
• Small-Scale Challenges to the $\Lambda$CDM Paradigm
• The mass distribution and gravitational potential of the Milky Way
• Cold dark matter haloes in the Planck era: evolution of structural parameters for Einasto and NFW profiles
• Cosmic Structure as the Quantum Interference of a Coherent Dark Wave
• Response of dark matter halos to condensation of baryons: cosmological simulations and improved adiabatic contraction model
• How supernova feedback turns dark matter cusps into cores
• The Universal Stellar Mass-Stellar Metallicity Relation for Dwarf Galaxies
• A Universal Mass Profile for Dwarf Spheroidal Galaxies?
• A Method for Measuring (Slopes of) the Mass Profiles of Dwarf Spheroidal Galaxies
• Gaia Data Release 2: Kinematics of globular clusters and dwarf galaxies around the Milky Way
• The Cores of Dwarf Galaxy Halos
• Beasts of the Southern Wild: Discovery of nine Ultra Faint satellites in the vicinity of the Magellanic Clouds
• Forty-Seven Milky Way-Sized, Extremely Diffuse Galaxies in the Coma Cluster
• Searching for Dark Matter Annihilation in Recently Discovered Milky Way Satellites with Fermi-LAT
• The dependence of dark matter profiles on the stellar to halo mass ratio: a prediction for cusps vs cores
• Development of the Model of Galactic Interstellar Emission for Standard Point-Source Analysis of Fermi Large Area Telescope Data
• ULySS: A Full Spectrum Fitting Package
• Mass loss from dwarf spheroidal galaxies: the origins of shallow dark matter cores and exponential surface brightness profiles
• The Tidal Evolution of Local Group Dwarf Spheroidals
• Dark Halos: The Flattening of the Density Cusp by Dynamical Friction
• Fluid Dark Matter
• Stellar Feedback in Dwarf Galaxy Formation
• The size - virial radius relation of galaxies
• Baryons Matter: Why Luminous Satellite Galaxies Have Reduced Central Masses
• Dark matter cores all the way down
• NIHAO IV: Core creation and destruction in dark matter density profiles across cosmic time
• Exclusion of canonical WIMPs by the joint analysis of Milky Way dwarfs with Fermi
• The Milky Way stellar halo out to 40 kpc : Squashed, broken but smooth
• NIHAO XI: Formation of Ultra-Diffuse Galaxies by outflows
• Proper motions and dynamics of the Milky Way globular cluster system from Gaia DR2
• Breathing FIRE: How Stellar Feedback Drives Radial Migration, Rapid Size Fluctuations, and Population Gradients in Low-Mass Galaxies
• Gaia DR2 Proper Motions of Dwarf Galaxies within 420 kpc: Orbits, Milky Way Mass, Tidal Influences, Planar Alignments, and Group Infall
• Four New Stellar Debris Streams in the Galactic Halo
• Population Gradients in Local Group Dwarf Spheroidals
• FIRE in the Field: Simulating the Threshold of Galaxy Formation
• The coupling between the core/cusp and missing satellite problems
• Sagittarius II, Draco II and Laevens 3: three new Milky Way satellites discovered in the Pan-STARRS 1 3pi Survey
• The feeble giant. Discovery of a large and diffuse Milky Way dwarf galaxy in the constellation of Crater
• Internal Kinematics of the Fornax Dwarf Spheroidal Galaxy
• The Local Group on FIRE: Dwarf galaxy populations across a suite of hydrodynamic simulations
• Dark Matter Cores and Cusps: The Case of Multiple Stellar Populations in Dwarf Spheroidals
• Performance of AAOmega: the AAT multi-purpose fibre-fed spectrograph
• New Dark Matter Physics: Clues from Halo Structure
• Accurate Stellar Kinematics at Faint Magnitudes: application to the Bootes~I dwarf spheroidal galaxy
• Dwarf galaxy annihilation and decay emission profiles for dark matter experiments
• Multi-Element Abundance Measurements from Medium-Resolution Spectra. II. Catalog of Stars in Milky Way Dwarf Satellite Galaxies
• Contrasting Galaxy Formation from Quantum Wave Dark Matter, $\psi$DM, with $\Lambda$CDM, using Planck and Hubble Data
• Ghostly Tributaries to the Milky Way: Charting the Halo's Stellar Streams with the Gaia DR2 catalogue
• The Cold Dark Matter Halos of Local Group Dwarf Spheroidals
• Complexity on Small Scales: The Metallicity Distribution of the Carina Dwarf Spheroidal Galaxy
• Dark matter annihilation and decay in dwarf spheroidal galaxies: The classical and ultrafaint dSphs
• The origin of ultra diffuse galaxies: stellar feedback and quenching
• Big fish, small fish: Two New Ultra-Faint Satellites of the Milky Way
• The upper bound on the lowest mass halo
• A Magellanic Origin of the DES Dwarfs
• Farthest Neighbor: The Distant Milky Way Satellite Eridanus II
• Evidence for an Intermediate-Mass Milky Way from Gaia DR2 Halo Globular Cluster Motions
• The PAndAS view of the Andromeda satellite system - II. Detailed properties of 23 M31 dwarf spheroidal galaxies
• A trio of new Local Group galaxies with extreme properties
• A Comprehensive Search for Dark Matter Annihilation in Dwarf Galaxies
• Kinematics and chemistry of recently discovered Reticulum 2 and Horologium 1 dwarf galaxies
• The shape of the Galactic halo with $Gaia$ DR2 RR Lyrae. Anatomy of an ancient major merger
• Gaia Data Release 2: Variable stars in the colour-absolute magnitude diagram
• Discovery of two neighboring satellites in the Carina constellation with MagLiteS
• Spectroscopic Confirmation of the Dwarf Galaxies Hydra II and Pisces II and the Globular Cluster Laevens 1
• The case for a cold dark matter cusp in Draco
• The origin of the diverse morphologies and kinematics of Milky Way-mass galaxies in the FIRE-2 simulations
• Crater 2: An Extremely Cold Dark Matter Halo
• M31 Transverse Velocity and Local Group Mass from Satellite Kinematics
• Dark Matter Heating and Early Core Formation in Dwarf Galaxies
• Magellan/M2FS Spectroscopy of Tucana 2 and Grus 1
• At the survey limits: discovery of the Aquarius 2 dwarf galaxy in the VST ATLAS and the SDSS data
• Systematics in virial mass estimators for pressure-supported systems
• Snake in the Clouds: A new nearby dwarf galaxy in the Magellanic bridge
• Nearest Neighbor: The Low-Mass Milky Way Satellite Tucana III
• Triangulum II: Not Especially Dense After All
• A Virial Core in the Sculptor Dwarf Spheroidal Galaxy
• The Stellar Dynamics of Omega Centauri
• A New Catalog of Globular Clusters in the Milky Way
• An Ultra-Faint Galaxy Candidate Discovered in Early Data from the Magellanic Satellites Survey
• Bayesian analysis of resolved stellar spectra: application to MMT/Hectochelle Observations of the Draco dwarf spheroidal
• Systemic Proper Motions of Milky Way Satellites from Stellar Redshifts: the Carina, Fornax, Sculptor and Sextans Dwarf Spheroidals
• The origin of failed subhaloes and the common mass scale of the Milky Way satellite galaxies
• Discovery of a Faint Outer Halo Milky Way Star Cluster in the Southern Sky
• A New Milky Way Satellite Discovered In The Subaru/Hyper Suprime-Cam Survey
• Simple J-Factors and D-Factors for Indirect Dark Matter Detection
• The Universe behind the Milky Way
• On the Run: mapping the escape speed across the Galaxy with SDSS
• The masses of Local Group dwarf spheroidal galaxies: The death of the universal mass profile
• Chemistry and Kinematics of the Late-Forming Dwarf Irregular Galaxies Leo A, Aquarius, and Sagittarius DIG
• Stealth Galaxies in the Halo of the Milky Way
• Gaia Data Release 2: Summary of the variability processing & analysis results
• Gaia 1 and 2. A pair of new Galactic star clusters
• The effect of a disc on the population of cuspy and cored dark matter substructures in Milky Way-like galaxies
• Knowing the unknowns: uncertainties in simple estimators of galactic dynamical masses
• Ships Passing in the Night: Spectroscopic Analysis of Two Ultra-Faint Satellites in the Constellation Carina
• A new Milky Way halo star cluster in the Southern Galactic Sky
• A Hero's Little Horse: Discovery of a Dissolving Star Cluster in Pegasus
• The imprint of cosmic reionisation on the luminosity function of galaxies
• The Discovery of an Ultra-Faint Star Cluster in the Constellation of Ursa Minor
• Digging deeper into the Southern skies: a compact Milky-Way companion discovered in first-year Dark Energy Survey data
• Clouds in Arms
• The physical nature of the cosmic accretion of baryons and dark matter into halos and their galaxies
• A Hubble Space Telescope Study of the Enigmatic Milky Way Halo Globular Cluster Crater
• Tidal disruption of dwarf spheroidal galaxies: the strange case of Crater II
• Portrait of a Dark Horse: a Photometric and Spectroscopic Study of the Ultra-faint Milky Way Satellite Pegasus III
• Stacking the Invisibles: A Guided Search for Low-Luminosity Milky Way Satellites
• The binary fraction of stars in dwarf galaxies: the case of Leo II
• Nine tiny star clusters in Gaia DR1, PS1 and DES
• Kim 3: an Ultra-faint Star Cluster in the Constellation of Centaurus
• Dynamical evidence for a strong tidal interaction between the Milky Way and its satellite, Leo V
• SMASH 1: a very faint globular cluster disrupting in the outer reaches of the LMC?
• Dwarf Galaxy Mass Estimators vs. Cosmological Simulations
• Charting Unexplored Dwarf Galaxy Territory With RR Lyrae
• A New Galaxy in the Local Group: the Antlia Dwarf Galaxy
• First Data Release of the All-sky NOAO Source Catalog
• Proper Motion of Milky Way Dwarf Spheroidals from Line-of-Sight Velocities
• Deep SOAR follow-up photometry of two Milky Way outer-halo companions discovered with Dark Energy Survey
• Detection of satellite remnants in the Galactic Halo with Gaia III. Detection limits for Ultra Faint Dwarf Galaxies
• RR Lyrae Variable Stars in the Crater II Dwarf Galaxy
• Variable Stars in Local Group Galaxies. IV. RR Lyrae stars in the central regions of the low-density galaxy Crater II

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• Dark matters on the scale of galaxies
• Two Ultra-Faint Milky Way Stellar Systems Discovered in Early Data from the DECam Local Volume Exploration Survey
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• Census and classification of low-surface-brightness structures in nearby early-type galaxies from the MATLAS survey
• Planes of satellites around Milky Way/M31-mass galaxies in the FIRE simulations and comparisons with the Local Group
• Diversity in density profiles of self-interacting dark matter satellite halos
• The abundance of satellites around Milky Way- and M31-like galaxies with the TNG50 simulation: a matter of diversity
• Dwarf Galaxies in CDM, WDM, and SIDM: Disentangling Baryons and Dark Matter Physics
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• EDGE: The origin of scatter in ultra-faint dwarf stellar masses and surface brightnesses
• Populations of double white dwarfs in Milky Way satellites and their detectability with LISA
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• Can cosmological simulations capture the diverse satellite populations of observed Milky Way analogues?
• Structure and kinematics of tidally limited satellite galaxies in LCDM
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