Astronomy and Astrophysics – Astronomy
Scientific paper
May 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...280..144c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 280, May 1, 1984, p. 144-149. Research supported by the Max-Planck-Institut
Astronomy and Astrophysics
Astronomy
94
Aluminum 26, Gamma Ray Astronomy, Interstellar Matter, Abundance, Chemical Evolution, Gamma Ray Spectrometers, Nuclear Fusion, Supernovae
Scientific paper
The amount of dispersed interstellar Al-26 detected by the HEAO 3 gamma-ray spectrometer cannot have been synthesized by supernova explosions if current calculations of the production ratio p(26)/p(27) approximately equal to 0.001 are correct. Simple models of chemical evolution of the Galaxy are presented to explain this point. The observed Al-26 is more likely due to about 100 million dispersed novae, or to a single old (10,000-1,000,000 yr) supernova remnant that today surrounds the solar system. If the Al-26 is dispersed, the high interstellar ratio today Al-26/Al-27 about equal to 0.00002 calls into question the requirement that a supernova trigger for formation of the solar system was the cause of a concentration 3-times larger. Also discussed is p-process production in novae with application to the question of live Sm-146 in the solar system.
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