Correlation of high galactic latitude HI and FIR emission and warm dust in the neutral interstellar medium

  • F. Boulanger
  • B. Baud
  • G. D. van Albada
Part I: Nearby Molecular Clouds as Part of Larger Structure
Part of the Lecture Notes in Physics book series (LNP, volume 237)


A comparative study of HI and IRAS maps of a large field at high galactic latitude is presented. The galactic infra-red emission is shown to be well correlated with the HI distribution. A quantitative relation between HI column densities and long-wavelengths IRAS fluxes is derived.

The infra-red spectrum of one diffuse HI cloud, from 12 to 100 μm is presented. Its emission in the mid infra-red (12 and 25 um) is several order of magnitudes larger than what is predicted by standard dust models. The power radiated at 12 μm represents 25% of the 100 μm emission. The spectrum presents a minimum at 25 um. The color temperature derived from the 12 and 25 pm fluxes is 320K.


Column Density High Galactic Latitude Galactic Component Galactic Pole Warm Dust 
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Copyright information

© Springer-Verlag 1985

Authors and Affiliations

  • F. Boulanger
    • 1
  • B. Baud
    • 1
  • G. D. van Albada
    • 1
  1. 1.Groningen Space Research DepartmentAV GroningenNetherlands

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