Tiny HI Clouds in the Local ISM

  • Robert Braun
  • Nissim Kanekar
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 327)


Very sensitive HI absorption spectra (Δτ ∼ 10-4 over 1 km/s) toward high latitude QSOs have revealed a population of tiny discrete features in the diffuse ISM with peak τ of 0.1 – 2% and core line-widths corresponding to temperatures as low as 20 K. Imaging detections confirm linear dimensions of a few 1000 AU.


Dark Matter Column Density Stellar Wind Initial Mass Function Apparent Distance 
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Copyright information

© Springer 2005

Authors and Affiliations

  • Robert Braun
    • 1
  • Nissim Kanekar
    • 2
  1. 1.ASTRONDwingelooThe Netherlands
  2. 2.Kapteyn Inst.GroningenThe Netherlands

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