The high-velocity clouds and the Magellanic Clouds

Abstract

From an analysis of the sky and velocity distributions of the high-velocity clouds (HVCs) we show that the majority of the HVCs has a common origin. We conclude that the HVCs surround the Galaxy, forming a metacloud of 300 kpc in size and with a mass of 3 10^9 M_sun, and that they are the product of a powerful ``superwind'' (about 10^58 ergs), which occurred in the Magellanic Clouds about 570 Myr ago as a consequence of the interaction of the Large and Small Magellanic Clouds. The HVCs might be magnetic bubbles of semi-ionized gas, blown from the Magellanic Clouds around 570 Myr ago, that circulate largely through the halo of the Galaxy as a stream or flow of gas.

28 pages with 23 figures

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Cited by in corpus (25)

• Are the Magellanic Clouds on their First Passage about the Milky Way?
• The Role of Dwarf Galaxy Interactions in Shaping the Magellanic System and Implications for Magellanic Irregulars
• Outer structure of the Galactic warp and flare: explaining the Canis Major over-density
• The Origin of the Magellanic Stream and Its Leading Arm
• Simulations of the Magellanic Stream in a First Infall Scenario
• The Tidal Origin of the Magellanic Stream and the Possibility of a Stellar Counterpart
• SMASH - Survey of the MAgellanic Stellar History
• The COS/UVES Absorption Survey of the Magellanic Stream: I. One-Tenth Solar Abundances along the Body of the Stream
• The Origin of the Microlensing Events Observed Towards the LMC and the Stellar Counterpart of the Magellanic Stream
• Proper Motion Study of the Magellanic Clouds using SPM material
• Properties and Origin of the High-Velocity Gas Toward the Large Magellanic Cloud
• Chemical Abundances in the Leading Arm of the Magellanic Stream
• Evolution of dust and molecular hydrogen in the Magellanic System
• Characterizing the Galactic warp with Gaia: I. The tilted ring model with a twist
• Spectroscopy of the Young Stellar Association Price-Whelan 1: Origin in the Magellanic Leading Arm and Constraints on the Milky Way Hot Halo
• The Fate of Supernova-Heated Gas in Star-Forming Regions of the LMC: Lessons for Galaxy Formation?
• Parameters of the Local Warp of the Stellar-Gaseous Galactic Disk from the Kinematics of Tycho-2 Nearby Red Giant Clump Stars
• Cepheid Kinematics and the Galactic Warp
• Discovery of two embedded clusters with WISE in the high Galactic latitude cloud HRK 81.4-77.8
• The Gould Belt
• Large and small-scale structure of the Intermediate and High Velocity Clouds towards the LMC and SMC
• Orientation Parameters of the Cepheid System in the Galaxy
• Three-Dimensional Kinematics of Classical Cepheids
• Capture of field stars by giant interstellar clouds: the formation of moving stellar groups
• The Baryonic Mass Estimates of the Milky Way Halo in the form of High Velocity Clouds