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Atmospheric parameters and accelerations in the outer parts of luminous hot stars

Published online by Cambridge University Press:  12 April 2016

Hans Nieuwenhuijzen  and
Cornells de Jager
Hans Nieuwenhuijzen
Affiliation:
Astronomical Institute and Laboratory for Space Research, Beneluxlaan 21, 3527 HS Utrecht, the Netherlands
Cornells de Jager
Affiliation:
Astronomical Institute and Laboratory for Space Research, Beneluxlaan 21, 3527 HS Utrecht, the Netherlands

Extract

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In the atmospheres of the most extreme luminous stars, close to the Humphreys-Davidson limit, the inward gravitational acceleration is for a great part compensated by outward accelerations due to radiation pressure, turbulent pressure and dynamic pressure of the stellar winds. As a result the effective acceleration is very small, resulting in blown-up atmospheres that can no longer be considered plane-parallel or in hydrostatic equilibrium.

Type
Section II: Poster Papers, A Brief List of Catalogs, and Index
Information
International Astronomical Union Colloquium , Volume 113: Physics of Luminous Blue Variables , 1989 , pp. 287 - 288
Copyright
Copyright © Kluwer 1989