Photon escape in model planetary nebulae

Details Photon escape in model planetary nebulae Photon escape in model planetary nebulae

Nov 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jqsrt..16..901v&link_type=abstract

Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 16, Nov. 1976, p. 901-907. Research supported by the Australi

Astronomy and Astrophysics

Astronomy

4

Astronomical Models, Light Emission, Optical Thickness, Planetary Nebulae, Radiative Transfer, Atmospheric Models, Frequency Distribution, Light Scattering, Line Spectra, Radiant Flux Density, Velocity Distribution

Scientific paper

The effects of optical thickness, velocity gradients, and photon redistribution in frequency and direction, as described by the redistribution function, on emission-line profiles from simple slab-geometry atmospheres are examined. It is found that optical thickness and differential expansion are the dominant factors affecting photon escape and, hence, the characteristics and magnitude of the line emission. The importance of frequency and angular photon redistribution as photon-escape mechanisms are found to increase with increasing optical thickness and differential expansion.

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