On a class of atmospheres occurring in stellar hydrodynamic theory

Details On a class of atmospheres occurring in stellar hydrodynamic theory On a class of atmospheres occurring in stellar hydrodynamic theory

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982zamp...33..473a&link_type=abstract

Zeitschrift für angewandte Mathematik und Physik, vol. 33, July 1982, p. 473-486.

Physics

1

Atmospheric Boundary Layer, Atmospheric Models, Hydrodynamics, Stellar Atmospheres, Compressible Fluids, Energy Distribution, Equations Of Motion, Stellar Gravitation, Wave Propagation

Scientific paper

A derivation is given of the basic equation governing the behavior of small disturbances in a stratified, compressible atmosphere in which the time of radiative relaxation is constant. By means of a new independent variable that is a function of the equilibrium entropy stratification, various properties of such media can be established in a straightforward manner. A general expression for the wave energy flux is derived, and integral properties arising from this quantity are used to obtain results pertaining to the eigenfunctions and eigenvalues for strongly radiating systems. In addition, a model of an atmosphere with a strongly radiating region embedded in a 'convective zone', and bounded by semiinfinite radiation-free layers is discussed in some detail.

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