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Dynamical effects of stellar winds and associated HII regions on the interstellar medium

Published online by Cambridge University Press:  04 August 2017

Dieter Breitschwerdt
Dieter Breitschwerdt*
Affiliation:
Max-Planck-Institut fuer Kernphysik P.O. Box 10 39 80 D-6900 Heidelberg, West Germany

Abstract

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A dynamical model has been developed, describing the joint evolution of a stellar wind and an associated HII region during the main sequence life time of an OB-star. It is proposed that in case of spherical symmetry all dynamical features are obtained by dividing the flow into spatially homogenous regions separated by discontinuities (shock fronts, contact discontinuity and ionization front). Different phases in the dynamical evolution can be distinguished. The results show that the extension and structure of the HII region depends sensitively on the initial density of the ambient medium, the Lyman continuum photon rate and the mechanical wind power of the central star. This will be important for future high resolution observations.

Type
Mass Loss from Hot Stars
Information
Symposium - International Astronomical Union , Volume 122: Circumstellar Matter , 1987 , pp. 451 - 452
Copyright
Copyright © Reidel 1987 

References

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