Astrophysics and Space Science

, Volume 34, Issue 2, pp 377–386 | Cite as

The distribution of interstellar matter in IC 5146

  • W. B. Samson


The very young star cluster IC 5146 is studied using star counts, with a view to determining the distribution of interstellar matter in a region where star formation recently occurred.

IC 5146 is embedded in a dark nebula which is very dense near its centre. The total mass of interstellar dust in the nebula is found to be about 4.5M. Comparison of radio and optical observations of the region indicates that gas and dust are not separated to any great degree by radiation from the embedded stars. A gas/dust ratio of about 150/1 by mass is found. This ratio varies with the dust grain model used.


Radiation Dust Total Mass Great Degree Star Formation 
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

© D. Reidel Publishing Company 1975

Authors and Affiliations

  • W. B. Samson
    • 1
  1. 1.Royal ObservatoryEdinburghScotland

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