Statistics – Computation
Scientific paper
Oct 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...321..761h&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 321, Oct. 15, 1987, p. 761-767.
Statistics
Computation
16
Aluminum 26, Galactic Nuclei, Gamma Rays, Nuclear Fusion, Stellar Evolution, Stellar Mass, Supermassive Stars, Computational Astrophysics, Field Of View, Heao, Interstellar Matter, Metallic Stars, Red Giant Stars
Scientific paper
The evolution through contraction and explosion of a high-metallicity (Z = 0.04) supermassive star of 500,000 solar masses is computed. It is shown that in the inner 20-percent of the star, a significant fraction of the preexisting magnesium is converted into Al-26 leading to the production of about 50 solar masses of Al-26. This amount is sufficient to explain the observed 1.8 MeV gamma-ray line flux from the Galactic center if such a supermassive star exploded there within the last two million years. The ejecta will be enriched in the isotopes C-13 and O-17, but, with the exception of lithium and nitrogen, all elements are produced in roughly solar relative proportions.
Hillebrandt Wolfgang
Langer Norbert
Thielemann Friedrich-Karl
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