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Partially coherent scattering models for the formation of the chromospheric CaiiK line

✍ Scribed by I. M. Vardavas; L. E. Cram

Publisher
Springer
Year
1974
Tongue
English
Weight
519 KB
Volume
38
Category
Article
ISSN
0038-0938

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✦ Synopsis

We discuss a model for the formation of the chromospheric Ca n K line which does not make the usual assumption of complete redistribution. Using a physically reasonable scattering model, we find significant departures due to the frequency dependence of the line source function, particularly in the relative intensity and centre-to-limb behaviour of the Kx parts of the line and in the asymmetry produced by differential velocity fields. We conclude that the frequency dependence of the K line source function must be considered in quantitative models for the formation of the K line.

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