Recent Developments Concerning High-Velocity Clouds

  • Bart P. Wakker

Abstract

I summarize the new developments in HVC research that have occurred in the past few years. These include a) the determination of approximate distances to some IVCs and HVC complex A; b) the measurement of the metallicity of the Magellanic Stream and the conclusion that tidal forces are dominant in creating the Stream; c) the derivation that the metallicity of complex C is 0.1 solar, with some evidence for metallicity variations; d) the result that N/O in complex C is 0.2 times the solar ratio, a value otherwise only seen in dwarf galaxies and Damped Lyα systems; e) the discovery of high-velocity O VI absorption, both associated with previously known HI HVCs and in directions without a HI HVC; f) the proposal that HVCs form a population of objects permeating the Local Group.

Keywords

Local Group Column Density Galactic Halo Magellanic Cloud Heavy Element Abundance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 2004

Authors and Affiliations

  • Bart P. Wakker
    • 1
  1. 1.University of Wisconsin-MadisonMadison

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