Abstract
view Abstract Citations (19) References (6) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Line Formation with Non-Coherent Scattering by Electrons. I. Parameterized Models Auer, L. H. ; Mihalas, Dimitri Abstract We examine in this paper the effects of the non-coherence of the radiation scattered by electrons upon the formation of spectral lines A flexible numerical approach, making use of the difference-equation meth- od of solving the transfer equation, is developed and applied to simplified models in which the lines are taken to be either in LTE or non-LTE, and allowance is made for electron scattering and continuous absorption. Radiation scattered by the atom is assumed to be completely redistributed, although the method is general enough to account for arbitrary redistribution functions. The present calculation dif- fers from earlier work in that the electrons are assumed to be located in the same layers as the line and continuum opacity sources Compared to the case of coherent electron scattering, measurable changes in the line profile occur if the electron-scattering coefficient outweighs continuum absorption. Emission lines are decreased slightly in intensity and develop extensive emission wings. Absorption lines are widened and deepened, and emission humps are obliterated Publication: The Astrophysical Journal Pub Date: July 1968 DOI: 10.1086/149654 Bibcode: 1968ApJ...153..245A full text sources ADS | Related Materials (1) Part 2: 1968ApJ...153..923A
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