C I as a source of continuous opacity in late B-type main-sequence stars.
Abstract
The far-UV continuous opacity of C I in late B-type main-sequence stars is calculated in LTE and non-LTE. In LTE, C I is an important source of continuous opacity below 1240 A for stars of spectral type B5 and later. In non-LTE, the C I opacity is always much less and is important only for stars of spectral type B8 or cooler. The non-LTE predictions for the emergent flux shortward of 1240 A are in reasonable agreement with the observations.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- September 1977
- Bibcode:
- 1977A&A....60..377S
- Keywords:
-
- B Stars;
- Carbon;
- Late Stars;
- Main Sequence Stars;
- Opacity;
- Stellar Atmospheres;
- Early Stars;
- Interstellar Extinction;
- Radiative Transfer;
- Ultraviolet Radiation;
- Astrophysics