Fe-Ni and Al-Mg isotope records in UOC chondrules: Plausible stellar source of 60Fe and other short-lived nuclides in the early Solar System

Mishra RK and Goswami JN (in press)

Geochimica et Cosmochimica Acta
Volume 132, 1 May 2014, Pages 440–457


Model stellar nucleosynthesis yields suggest that both a high mass (5–6.5 M⊙) Asymptotic Giant Branch (AGB) star or a supernova (SN) could be the source of 60Fe and 26Al present in the early Solar System. A high mass (∼25 M⊙) SN appears more plausible because of the much higher probability of its close association with the protosolar molecular cloud than a high mass AGB star. Such a SN can also account for SSI abundance of 26Al and its correlated presence with 60Fe in chondrules.