Outer Atmospheres of Giant and Supergiant Stars
Abstract
The properties of the chromospheres, transition regions and coronae of cool evolved stars are reviewed based primarily on recent ultraviolet and X-ray studies. Recent determinations of mass loss rates using new observational techniques in the ultraviolet and radio spectral regions are discussed and observations indicating general atmospheric motions are considered. The techniques available for the quantitative modeling of these atmospheres are outlined and recent results discussed. Finally our current rudimentary understanding of the evolution of these outer atmospheres and its causes are considered.
- Publication:
-
Cool Stars, Stellar Systems, and the Sun
- Pub Date:
- 1984
- DOI:
- 10.1007/3-540-12907-3_218
- Bibcode:
- 1984LNP...193..282B
- Keywords:
-
- Giant Stars;
- Stellar Atmospheres;
- Stellar Coronas;
- Supergiant Stars;
- Chromosphere;
- Heao 2;
- Hertzsprung-Russell Diagram;
- Iue;
- Radiative Transfer;
- Radio Spectra;
- Stellar Evolution;
- Stellar Models;
- Stellar Winds;
- Ultraviolet Spectra;
- X Ray Spectra;
- Astronomy