The disruption of nearby galaxies by the Milky Way

Abstract

Interactions between galaxies are common and are an important factor in determining their physical properties such as position along the Hubble sequence and star-formation rate. There are many possible galaxy interaction mechanisms, including merging, ram-pressure stripping, gas compression, gravitational interaction and cluster tides. The relative importance of these mechanisms is often not clear, as their strength depends on poorly known parameters such as the density, extent and nature of the massive dark halos that surround galaxies. A nearby example of a galaxy interaction where the mechanism is controversial is that between our own Galaxy and two of its neighbours -- the Large and Small Magellanic Clouds. Here we present the first results of a new HI survey which provides a spectacular view of this interaction. In addition to the previously known Magellanic Stream, which trails 100 degrees behind the Clouds, the new data reveal a counter-stream which lies in the opposite direction and leads the motion of the Clouds. This result supports the gravitational model in which leading and trailing streams are tidally torn from the body of the Magellanic Clouds.

17 pages with 5 figures in gif format, scheduled for publication in the August 20th, 1998 issue of Nature

References in corpus (6)

• N-body Simulations of the Small Magellanic Cloud and the Magellanic Stream
• The Influence of Environment on the Star Formation Rates of Galaxies
• The Origin of the Magellanic Stream
• The Metallicity and Dust Content of HVC 287.5+22.5+240: Evidence for a Magellanic Clouds Origin
• Formation of the Galactic Halo
• The Fate of the Magellanic Stream

Cited by in corpus (161)

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• A giant stream of metal-rich stars in the halo of the galaxy 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?
• The 1000 Brightest HIPASS Galaxies: HI Properties
• Gaseous Galaxy Halos
• Highly-Ionized High-Velocity Gas in the Vicinity of the Galaxy
• Magellanic Cloud Structure from Near-IR Surveys I: The Viewing Angles of the LMC
• Distances and Metallicities of High- and Intermediate-Velocity Clouds
• The Magellanic Stream, High-Velocity Clouds and the Sculptor Group
• A New Look at the Kinematics of Neutral Hydrogen in the Small Magellanic Cloud
• Is the SMC Bound to the LMC? The HST Proper Motion of the SMC
• The Origin of the Magellanic Stream and Its Leading Arm
• A New Look at the Large-Scale HI Structure of the LMC
• The Parkes HI Survey of the Magellanic System
• The Velocity Dispersion Profile of the Remote Dwarf Spheroidal Galaxy Leo I: A Tidal Hit and Run?
• The Tidal Origin of the Magellanic Stream and the Possibility of a Stellar Counterpart
• HIPASS High-Velocity Clouds: Properties of the Compact and Extended Populations
• The 200 Degree-Long Magellanic Stream System
• The Magellanic Stream: Circumnavigating the Galaxy
• Magellanic Cloud Structure from Near-IR Surveys II: Star Count Maps and the Intrinsic Elongation of the LMC
• The gravitational and hydrodynamical interaction between the LMC and the Galaxy
• How cold gas continuously entrains mass and momentum from a hot wind
• The COS/UVES Absorption Survey of the Magellanic Stream. III: Ionization, Total Mass, and Inflow Rate onto the Milky Way
• Complex C: A Low-Metallicity High-Velocity Cloud Plunging into the Milky Way
• N-body simulations of the Magellanic Stream
• A Population of Accreted SMC Stars in the LMC
• The Gas Content and Stripping of Local Group Dwarf Galaxies
• Spectroscopic Confirmation of the Dwarf Galaxies Hydra II and Pisces II and the Globular Cluster Laevens 1
• The VMC Survey. XXV. The 3D structure of the Small Magellanic Cloud from Classical Cepheids
• Orbits of Massive Satellite Galaxies: I. A Close Look at the Large Magellanic Cloud and a New Orbital History for M33
• Evidence for a Massive, Extended Circumgalactic Medium Around the Andromeda Galaxy
• Proper Motions of Dwarf Spheroidal Galaxies from Hubble Space Telescope Imaging. IV: Measurement for Sculptor
• Proper Motions of Dwarf Spheroidal Galaxies from Hubble Space Telescope Imaging. V: Final Measurement for Fornax
• High-velocity clouds as streams of ionized and neutral gas in the halo of the Milky Way
• Metal Abundances in the Magellanic Stream
• The Morphologies of the Small Magellanic Cloud
• Westerbork HI observations of high-velocity clouds near M31 and M33
• FUSE Observations of Atomic Abundances and Molecular Hydrogen in the Leading Arm of the Magellanic Stream
• A 10 kpc stellar substructure at the edge of the Large Magellanic Cloud: perturbed outer disk or evidence for tidal stripping?
• Fossil imprint of a powerful flare at the Galactic Centre along the Magellanic Stream
• First Results from the NOAO Survey of the Outer Limits of the Magellanic Clouds
• Local Volume TiNy Titans: Gaseous Dwarf-Dwarf Interactions in the Local Universe
• The VMC survey - XXVI. Structure of the Small Magellanic Cloud from RR Lyrae stars
• The VMC Survey. V. First results for Classical Cepheids
• Stellar Halo Constraints on Simulated Late Type Galaxies
• Spatially Resolved Velocity Maps of Halo Gas Around Two Intermediate-redshift Galaxies
• The VMC Survey. XIII. Type II Cepheids in the Large Magellanic Cloud
• The small-scale structure of the Magellanic Stream
• Kinematics of massive stars in the Small Magellanic Cloud
• The total mass and dark halo properties of the Small Magellanic Cloud
• A Very Sensitive 21cm Survey for Galactic High-Velocity HI
• Revealing the tidal scars of the Small Magellanic Cloud
• Evolutionary Histories of Dwarf Galaxies in the Local Group
• A Targeted Survey for HI Clouds in Galaxy Groups
• The large-scale ionization cones in the Galaxy
• HIPASS Detection of an Intergalactic Gas Cloud in the NGC 2442 Group
• Evidence for Tidal Effects in the Stellar Dynamics of the Large Magellanic Cloud
• High Resolution \hi observations of the Western Magellanic Bridge
• On the dynamics of the Small Magellanic Cloud through high-resolution ASKAP HI observations
• The Magellanic Corona and the formation of the Magellanic Stream
• The Magellanic Stream at 20 kpc: A New Orbital History for the Magellanic Clouds
• Proper Motion Study of the Magellanic Clouds using SPM material
• Highly Ionized Gas in the Galactic Halo and the High Velocity Clouds Toward PG 1116+215
• Models of Tidally Induced Gas Filaments in the Magellanic Stream
• An Interaction of a Magellanic Leading Arm High Velocity Cloud with the Milky Way Disk
• The LMC geometry and outer stellar populations from early DES data
• The dynamics of satellite disruption in cold dark matter haloes
• The VISCACHA survey - I. Overview and First Results
• Where are the High Velocity Clouds in Local Group Analogs?
• Head-Tail Clouds: Drops to Probe the Diffuse Galactic Halo
• A blind HI survey in the Canes Venatici region
• An Extragalactic HI Cloud with No Optical Counterpart?
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• The MAGellanic Inter-Cloud project (MAGIC) I: Evidence for intermediate-age stellar populations in between the Magellanic Clouds
• On the Neutral Gas Content and Environment of NGC 3109 and the Antlia Dwarf Galaxy
• The Magellanic Inter-Cloud Project (MAGIC) III: First spectroscopic evidence of a dwarf stripping a dwarf
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• The VMC Survey. XIX. Classical Cepheids in the Small Magellanic Cloud
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• The Space Density of Primordial Gas Clouds near Galaxies and Groups and their Relation to Galactic HVCs
• The Magellanic Stream: break up and accretion onto the hot Galactic corona
• The Magellanic System: the puzzle of the leading gas stream
• Stellar substructures in the periphery of the Magellanic Clouds with the VISTA Hemisphere Survey from the red clump and other tracers
• The VISCACHA survey -- III. Star clusters counterpart of the Magellanic Bridge and Counter-Bridge in 8D
• Gas Accretion onto the Milky Way
• Discovery of the Magellanic Stellar Stream Out to 100 Kiloparsecs
• On the Origin of the Supergiant HI Shell and Putative Companion in NGC 6822
• Chemical Abundances in the Leading Arm of the Magellanic Stream
• The four leading arms of the Magellanic Cloud system
• HI-deficient galaxies in intermediate density environments
• Evolution of dust and molecular hydrogen in the Magellanic System
• The scattered debris of the Magellanic Stream
• Discovery of a disrupting open cluster far into the Milky Way halo: a recent star formation event in the leading arm of the Magellanic stream?
• A possible common halo of the Magellanic Clouds
• Galaxy Pairs in the Local Group
• Origin of structural and kinematical properties of the Small Magellanic Cloud
• Morphology and metallicity of the Small Magellanic Cloud using RRab stars
• The Magellanic Stream and Debris Clouds
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• Revealing the Ionization Properties of the Magellanic Stream using Optical Emission
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• The Ultraviolet View of the Magellanic Clouds from GALEX: A First Look at the LMC Source Catalog
• Kinematics of the Magellanic Stream and Implications for its Ionization
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• High-resolution N-body Simulations of Galactic Cannibalism: The Magellanic Stream
• Discovery of Magellanic Stellar Debris in the H3 Survey
• New constraints on the nature and origin of the Leading Arm of the Magellanic Stream
• INTEGRAL deep observations of the Small Magellanic Cloud
• Constraints on Intervening Stellar Populations Toward the Large Magellanic Cloud
• The First Results from the Parkes Multibeam High-Velocity Cloud Survey
• Characterizing the Circumgalactic Medium of the Lowest-Mass Galaxies: A Case Study of IC 1613
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• Potential Black Hole Seeding of the Spiral Galaxy NGC 4424 via an Infalling Star Cluster
• WALLABY Pre-Pilot Survey: The effects of angular momentum and environment on the HI gas and star formation properties of galaxies in the Eridanus supergroup
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• A Radial Velocity Survey for LMC Microlensed Sources
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• The detection of a massive chain of dark HI clouds in the GAMA G23 Field
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• The Dark Matter problem
• The stellar environment of SMC N81
• UVIT Study of the MAgellanic Clouds (U-SMAC) II. A Far-UV catalog of the Small Magellanic Cloud: Morphology and Kinematics of young stellar population
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• CaII K observations of QSOs in the line-of-sight to the Magellanic Bridge
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• Galactic Cannibalism: the Origin of the Magellanic Stream
• A population of high-velocity absorption-line systems residing in the Local Group
• The Magellanic Puzzle: origin of the periphery
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• Investigating the Baryon Cycle in Interacting Dwarfs with the Very Large Array and Pan-STARRS
• The Diffuse Ionized Gas of the Large Magellanic Cloud
• Probing the interstellar medium of NGC1569 with Herschel
• Young stars raining through the Galactic Halo: the nature and orbit of Price-Whelan 1
• Is High-Velocity Cloud Complex C Associated with the Galactic Warp?
• Following the tidal trail: a history of modeling the Magellanic Stream
• The Origins of Young Stars in the Direction of the Leading Arm of the Magellanic Stream: Abundances, Kinematics, and Orbits
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• Wind of Change: Faraday Rotation in a Simulated Large Magellanic Cloud
• Comparison of Diffuse Infrared and Far-Ultraviolet emission in the Large Magellanic Cloud: The Data
• HI and Galaxy Formation in Loose Groups
• HI in Local Group analogs: what does it tell us about galaxy formation?
• The 3D Kinematics of Gas in the Small Magellanic Cloud