The Continuous Spectrum of Stellar Atmospheres Consisting Only of Atoms and Negative Ions of Hydrogen.
Abstract
Theoretical color temperatures have been derived for stellar atmospheres consisting only of H and H in ionization equffibrium, over the range of effective temperatures 5o4o/T~ = 0.5-1.2 and for differ- ent electron pressures. Choosing the electron pressure so as to reproduce the value of the Ba]mer dis- continuity observed by Barbier and Chalonge, the color temperatures of the spectral types Ao-Fo determined by the same authors can be tolerably well represented by the H-H mixture. For the later spectral types the theoretical color temperatures fall considerably below the corresponding effective temperatures, while the observed color temperatures are distinctly higher than the effective ones. It does not seem possible to remove this discrepancy by adding the conventional metaffic absorption to that of H and H
- Publication:
-
The Astrophysical Journal
- Pub Date:
- January 1941
- DOI:
- 10.1086/144242
- Bibcode:
- 1941ApJ....93...47W