Published July 9, 2025
| Version v1
Journal article
Rare earth element nucleosynthetic anomalies and dust transport in the protoplanetary disk
Creators
- 1. University of Chicago
- 2. California Institute of Technology
- 3. University of Cambridge
- 4. Leiden University
- 5. Victoria University of Wellington
- 6. University of Bern
Description
The size, density, and chemical characteristics of solar system bodies have been shaped by material transport during the protoplanetary disk stage. This includes transport from the inner to outer solar system of refractory dust grains that carry nucleosynthetic anomalies. Here, we show that rare earth element (REE) isotopes in fine-grained calcium-aluminum–rich inclusions (CAIs) display anomalies stemming from incomplete mixing of r-, s-, and p-process nucleosynthesis. The data points define two correlations, which are best explained by mixing between three isotopic reservoirs in two successive stages, one of which involved a variable admixture of a p-process component. We propose that CAI precursors formed in the inner solar system and were subsequently transported by FU Orionis outbursts from the disk to the envelope where they mixed with an isotopically distinct reservoir before settling on the midplane.
Data availability
All data needed to evaluate the conclusions in the paper are present in the paper and/or the Supplementary Materials.Additional details
Identifiers
- DOI
- 10.1126/sciadv.adv3148
- Other
- oai:uchicago.tind.io:16200
Funding
- National Aeronautics and Space Administration
- NNX17AE86G
- National Aeronautics and Space Administration
- NNX17AE87G
- National Aeronautics and Space Administration
- 80NSSC17K0744
- National Aeronautics and Space Administration
- 80NSSC20K0821
- National Aeronautics and Space Administration
- 80NSSC21K0380
- European Research Council
- 101020665
- Natural Environment Research Council
- NE/V000411/1
- Swiss National Science Foundation
- 200020_196955