The Chromosphere above a Sunspot Umbra
Abstract
Spectra of several strong lines of sunspots have been obtained with the Echelle spectrograph at the Vacuum Tower Telescope, Sacramento Peak Observatory. With a variety of model atmospheres, Ca II H, K, and λ18498 line profiles were calculated using a non-LTE line formation procedure.
- Publication:
-
Solar Physics
- Pub Date:
- July 1982
- DOI:
- 10.1007/BF00146971
- Bibcode:
- 1982SoPh...79...31B
- Keywords:
-
- Chromosphere;
- Solar Atmosphere;
- Solar Spectra;
- Spectral Line Width;
- Sunspots;
- Umbras;
- Atmospheric Models;
- Calcium;
- H Lines;
- K Lines;
- Thermodynamic Equilibrium;
- Solar Physics;
- Atmosphere;
- Optimum Model;
- Line Profile;
- Specific Part;
- Model Atmosphere