Massive stars and short-lived radionuclides in the Solar System

Details Massive stars and short-lived radionuclides in the Solar System Massive stars and short-lived radionuclides in the Solar System

Nov 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011eas....51..289g&link_type=abstract

EAS Publications Series, Volume 51, 2011, pp.289-297

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Scientific paper

Short-lived radionuclides (SLRs) are radioactive elements (T1/2 ≺ 200 Myr) which were present in the nascent solar system and are now extinct. While the initial abundance of SLRs with the longest half-lives (T1/2 ≻ 3 Myr) is compatible with the expectations of Galactic evolution models, others have a last-minute origin. 7Be, 10Be, 36Cl, and 41Ca probably originated within the protoplanetary disk from the irradiation of gas and dust by energetic particles accelerated by the protoSun. 26Al and 60Fe were probably synthesized by massive stars and added to interstellar gas which will eventually make up the bulk of our solar system. Identifying the detailed mechanisms of 26Al and 60Fe production and mixing will shed a light on the relationship between the Sun formation history and massive stars.

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