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A reconsideration of the effective depth of line formation in planetary atmospheres

✍ Scribed by K. D. Abhyankar; R. K. Bhatia

Publisher
Springer Netherlands
Year
1984
Tongue
English
Weight
546 KB
Volume
30
Category
Article
ISSN
1573-0794

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✦ Synopsis

A new definition of the effective depth of line formation is given which incorporates its dependence on the angle of emergence as well as on the position within the line. Solution obtained for isotropic scattering in the third approximation of discrete ordinates explains: (i) Variation of equivalent widths over the disc; (ii) Inverse dependence of this variation on line strength; and (iii) The phase effect for relative equivalent widths.

πŸ“œ SIMILAR VOLUMES

Depth of formation of lines in the solar
Depth of formation of lines in the solar atmosphere
✍ L. Achmad πŸ“‚ Article πŸ“… 1992 πŸ› Springer 🌐 English βš– 368 KB

A simple and reliable method has been established for the definition of the depth of formation of lines in a stellar atmosphere. It is based on the determination of the level of emission of the reemitted line radiation. The new definition, which is applied in this paper to the solar case, does not s