Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...223..136p&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 223, no. 1-2, Oct. 1989, p. 136-140.
Astronomy and Astrophysics
Astrophysics
4
Gamma Ray Spectra, Neutron Physics, Nuclear Astrophysics, Radioactive Decay, Stellar Physics, Abundance, Cobalt, Diffuse Radiation, Helium, Iron, Stellar Mass
Scientific paper
The nucleosynthesis of the radioactive nuclei Fe(59), Fe(60) and Co(60) under hydrostatic He-burning conditions is investigated in a parameterized way (i.e. at constant temperature and density) using a full and up-dated s-process network. It is found that significant quantities of those nuclei can be produced in realistic shell He-burning conditions met in massive stars. The implications of these results for galactic gamma-ray line astronomy of point and diffuse sources are evaluated semi-quantitatively. It is suggested that an 'average' galactic type II supernova would give detectable gamma-ray fluxes of the Fe(59) line, and that a diffuse Fe(60) emission line from the galactic plane should be observable with next generation instruments.
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