Gamma-Ray Line Emissions from **26AL Produced by Wolf-Rayet Stars
Abstract
The recent satellite observations of the 1.8 MeV line from the decay of Al-26 has given a new impetus to the study of the nucleosynthesis of Al-26. The production and ejection of Al-26 by massive mass-losing stars (Of and WR stars) is discussed in the light of recent stellar models. The longitude distribution of the Al-26 gamma ray line emission produced by the galactic collection of WR stars is derived based on various estimates of their radial distribution. This longitude profile provides: (1) a specific signature of massive stars on the background of other potential Al-26 sources, as novae, supernovae, certain red giants and possibly AGB stars; and (2) a possible tool to improve the data analysis of the HEAO 3 and SMM experiments.
- Publication:
-
19th International Cosmic Ray Conference (ICRC19), Volume 1
- Pub Date:
- August 1985
- Bibcode:
- 1985ICRC....1..361P
- Keywords:
-
- Aluminum 26;
- Gamma Rays;
- Nuclear Fusion;
- Stellar Radiation;
- Wolf-Rayet Stars;
- Asymptotic Giant Branch Stars;
- Cosmic Rays;
- Emission Spectra;
- Galactic Radiation;
- Line Spectra;
- Star Distribution;
- Stellar Evolution;
- Space Radiation