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Coherent Line Formation with Depth-Dependent Parameters

Published online by Cambridge University Press:  08 February 2017

T. R. Carson
T. R. Carson*
Affiliation:
University Observatory, St. Andrews, U.K.

Abstract

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A discrete ordinate method is developed for solving the equation of coherent line formation, for arbitrary given variations with depth in an atmosphere of the temperature (or Planck function, assuming local thermodynamic equilibrium) and the line absorption and scattering coefficients. The direct solution thus obtained can then be used as the starting point of an iterative procedure. Results obtained for an exactly soluble case indicate the utility of the method.

Keywords

numerical methodcoherent line formation
Type
Part B. Theoretical Methods for Handling Non-LTE Problems
Information
International Astronomical Union Colloquium , Volume 2: Spectrum Formation in Stars With Steady-State Extended Atmospheres , August 1970 , pp. 226 - 238
Copyright
Copyright © 1970

References

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