Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...114..341l&link_type=abstract
Astronomy and Astrophysics, vol. 114, no. 2, Oct. 1982, p. 341-346.
Astronomy and Astrophysics
Astrophysics
44
Computerized Simulation, Cosmic Dust, Radiative Transfer, Stellar Envelopes, Granular Materials, Optical Properties, Spectral Energy Distribution, Spherical Shells, Temperature Distribution
Scientific paper
A numerical simulation method is used by the computer program presented to solve the radiative transfer problem in spherical shells of interstellar dust, with full consideration of multiple scattering and anisotropic phase functions for spherical dust grains. The radial distribution of dust temperature throughout the shell, the spectral distribution of the outward net flux and the radial profile of the source at different wavelengths are obtained and discussed in connection with observational data and the analytical calculations of previous investigators. Attention is given to the influence of dust optical properties on temperature distributions, emergent spectra, and intensity profiles. It is confirmed that clean silicate grains around a cool star always appear in absorption at 9 microns.
Bergeat J.
Daniel J. Y.
Lefevre J.
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