Gamma-ray line emission from Al-26 produced by Wolf-Rayet stars

Details Gamma-ray line emission from Al-26 produced by Wolf-Rayet stars Gamma-ray line emission from Al-26 produced by Wolf-Rayet stars

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....1..361p&link_type=abstract

In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 1 p 361-364 (SEE N85-33902 22-93)

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1

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

Scientific paper

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.

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