Fine structure of Fraunhofer lines and the structure of the solar atmosphere
Abstract
On the basis of data on the fine structure (asymmetry) of weak Fraunhofer lines observed in the spectrum of the center of the solar disk, a semiempirical inhomogeneous model of the solar atmosphere is proposed which explains: (1) the fine structure of moderate and moderately strong Fraunhofer lines at the center of the solar disk; (2) the change in the sign of the asymmetry of absorption lines from positive to negative in the center-to-limb transition; (3) the asymmetry of absorption lines formed in a granule and a porule; (4) the weak dependence of the fine structure of Fraunhofer lines on the atomic parameters; and (5) the shifts of absorption lines at different distances from the center of the solar disk. A fundamental difference of the model from those proposed earlier is the absence of correlation between the direction of motion of convective elements and their brightness.
- Publication:
-
Astronomicheskii Zhurnal
- Pub Date:
- February 1985
- Bibcode:
- 1985AZh....62..112K
- Keywords:
-
- Fine Structure;
- Fraunhofer Lines;
- Solar Atmosphere;
- Spectral Energy Distribution;
- Stellar Models;
- Absorption Spectra;
- Asymmetry;
- Atmospheric Circulation;
- Atomic Structure;
- Photosphere;
- Solar Temperature;
- Solar Physics