Molecular opacities in M-star atmospheres.
Abstract
The general properties of M giant and dwarf atmospheres are briefly reviewed, and the problems of modeling are described. The authors show, by means of recently calculated dwarf atmospheres, that molecules play a key role in the equation of state and that their absorption determines in most cases the slope of the spectrum. A comparison of calculated and observed spectra of the M-dwarf system Gliese 866 demonstrates the limitations of present modeling and the need for improved data on molecular equilibria and opactities.
- Publication:
-
Revista Mexicana de Astronomia y Astrofisica, vol. 23
- Pub Date:
- March 1992
- Bibcode:
- 1992RMxAA..23..203A