Astrophysics and Space Science

, Volume 43, Issue 1, pp 83–89 | Cite as

The radio sources and their exciting stars in Cygnus X

  • C. Goudis
Article

Abstract

Physical parameters (density, mass of the ionized gas, emission measure, excitation parameter) of various thermal sources of the Cygnus X complex were derived by adopting a simple spherical model. The limitations of the excitation parameter-spectral class relationship are discussed and because of them no reliable conclusion can be drawn about the nature of their exciting stars. Physical characteristics of two non-thermal sources were also derived on the assumption they are SNR.

Keywords

Physical Characteristic Physical Parameter Radio Source Spherical Model Emission Measure 

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Copyright information

© D. Reidel Publishing Company 1976

Authors and Affiliations

  • C. Goudis
    • 1
  1. 1.Department of AstronomyUniversity of ManchesterEngland

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