Evidence for a Late Supernova Injection of 60Fe into the Protoplanetary Disk

@article{Bizzarro2007EvidenceFA,
  title={Evidence for a Late Supernova Injection of 60Fe into the Protoplanetary Disk},
  author={Martin Bizzarro and David Garf Ulfbeck and Anne Trinquier and Kristine Thrane and James N. Connelly and Bradley S. Meyer},
  journal={Science},
  year={2007},
  volume={316},
  pages={1178 - 1181}
}
High-precision 60Fe-60Ni isotope data show that most meteorites originating from differentiated planetesimals that accreted within 1 million years of the solar system's formation have 60Ni/58Ni ratios that are ∼25 parts per million lower than samples from Earth, Mars, and chondrite parent bodies. This difference indicates that the oldest solar system planetesimals formed in the absence of 60Fe. Evidence for live 60Fe in younger objects suggests that 60Fe was injected into the protoplanetary… 
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