Accession Number : AD0619205

Title :   A COMPUTER MODEL FOR PLANETARY NEBULAE.

Descriptive Note : Scientific rept.,

Corporate Author : BRANDEIS UNIV WALTHAM MASS ASTROPHYSICS INST

Personal Author(s) : Turoff,Murray

Report Date : FEB 1965

Pagination or Media Count : 125

Abstract : A treatment of the planetary nebulae problem in which a computer model is constructed that will produce a consistent solution for such variables, within the nebular shell, as the radiation field, electron temperature, ionization densities, and expansion velocities of the elements. The nebula is characterized by such parameters as the average density of particle, average expansion velocity, size, relative abundances, and temperature of the central star. An equal measure of treatment is provided the three physical problem areas associated with planetary nebulae: radiative transfer, gas dynamics, and gas structure. The problem is treated in as much detail and accuracy as is consistent with both available computers and inherent observational inaccuracies. (Author)

Descriptors :   (*NEBULAE, MATHEMATICAL MODELS), (*ASTROPHYSICS, NEBULAE), PLANETARY ATMOSPHERES, PHYSICAL PROPERTIES, ASTRONOMY, COMPUTER PROGRAMMING

Distribution Statement : APPROVED FOR PUBLIC RELEASE