Radiative transport in circumstellar dust shells
Journal Article
·
· Astrophys. J.; (United States)
A calculation of a nongray, extended spherical circumstellar dust shell is presented. The study has been limited to an exploration of the following parameters: angular dependence of the incident field, density distribution, opacities, relative extension of the dust shell, and distance of the inner radius of the shell from the stellar surface. Anisotropic scattering has been included in an approximate manner. The results are applied to VY CMa. The properties of the model which give the best fit are a dust mixture of 70 percent iron and 30 percent silicates, an inner (outer) shell radius of 5.505 x 10/sup 14/ (3.0 x 10/sup 16/) cm, and a density law of the form n=n/sub 0/(r/R)/sup -1/. (AIP)
- Research Organization:
- Lick Observatory, Board of Studies in Astronomy and Astrophysics, University of California, Santa Cruz
- OSTI ID:
- 7194973
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 204:3; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATMOSPHERES
BOUNDARY CONDITIONS
COSMIC DUST
DENSITY
DUSTS
ELEMENTS
ENERGY TRANSFER
HEAT TRANSFER
INTERSTELLAR GRAINS
IRON
LUMINOSITY
MATHEMATICAL MODELS
METALS
OPACITY
OPTICAL PROPERTIES
OXYGEN COMPOUNDS
PARTICLES
PHYSICAL PROPERTIES
RADIANT HEAT TRANSFER
SCATTERING
SILICATES
SILICON COMPOUNDS
STAR MODELS
STELLAR ATMOSPHERES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENTS
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATMOSPHERES
BOUNDARY CONDITIONS
COSMIC DUST
DENSITY
DUSTS
ELEMENTS
ENERGY TRANSFER
HEAT TRANSFER
INTERSTELLAR GRAINS
IRON
LUMINOSITY
MATHEMATICAL MODELS
METALS
OPACITY
OPTICAL PROPERTIES
OXYGEN COMPOUNDS
PARTICLES
PHYSICAL PROPERTIES
RADIANT HEAT TRANSFER
SCATTERING
SILICATES
SILICON COMPOUNDS
STAR MODELS
STELLAR ATMOSPHERES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENTS