The Distribution of Cold Dust within the Galaxy

  • J. I. Davies
  • M. Trewhella
  • H. Jones
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 209)

Abstract

Radiative transfer models of galaxies using exponentially distributed stars and dust have been used extensively to interpret surface brightness inclination tests, galaxy colour gradients, localised extinction and the far infrared (FIR) emission. The Standard Model (SM) used has been obtained mainly from observations of our Galaxy (extinction measures to stars and IRAS). Within the SM the generally excepted values for the vertical z and radial r dust scalelengths are about 0.13 and 3.5 kpc respectively. In this paper we describe how we have tested the SM using the emission from cold dust as measured by COBE (DIRBE). We have created all sky 140 and 240μ surface brightness maps from the DIRBE annual averaged sky maps. For references to the work described in this paper please consult ’The Opacity of Spiral Disks’, Proc. NATO ARW Cardiff July 1994, Ed. J. Davies and D. Burstein.

Keywords

Localise Extinction Surface Brightness Galactic Plane Radiative Transfer Model Dust Density 
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

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • J. I. Davies
    • 1
  • M. Trewhella
    • 1
  • H. Jones
    • 1
  1. 1.Dept. of Physics and AstronomyUniversity of Wales College of CardiffCardiffUK

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