Abstract
Knowledge of the nucleosynthetic isotope composition of the outermost protoplanetary disk is critical to understand the formation and early dynamical evolution of the Solar System. We report the discovery of outer disk material preserved in a pristine meteorite based on its chemical composition, organic-rich petrology, and 15N-rich, deuterium-rich, and 16O-poor isotope signatures. We infer that this outer disk material originated in the comet-forming region. The nucleosynthetic Fe, Mg, Si, and Cr compositions of this material reveal that, contrary to current belief, the isotope signature of the comet-forming region is ubiquitous among outer Solar System bodies, possibly reflecting an important planetary building block in the outer Solar System. This nucleosynthetic component represents fresh material added to the outer disk by late accretion streamers connected to the ambient molecular cloud. Our results show that most Solar System carbonaceous asteroids accreted material from the comet-forming region, a signature lacking in the terrestrial planet region.
Originalsprog | Engelsk |
---|---|
Artikelnummer | eadp1613 |
Tidsskrift | Science Advances |
Vol/bind | 10 |
Udgave nummer | 24 |
Antal sider | 12 |
ISSN | 2375-2548 |
DOI | |
Status | Udgivet - 2024 |
Bibliografisk note
Funding Information:We thank M. K\u00FCffmeier and T. Haugb\u00F8lle for their discussion on various aspects of this work. We appreciate the helpful contributions of the anonymous reviewers that have improved our manuscript. Funding for this project was provided by the Villum Foundation (Villum Young Investigator Grant #53024) to E.v.K. as well as the Carlsberg Foundation (CF18_1105) and the European Research Council (ERC Advanced grant Agreement 833275\u2014DEEPTIME) to M.B. M.B. acknowledges support from the Villum Foundation (Villum Investigator Grant #54476). M.S. acknowledges support from the Carlsberg Foundation (CF20_0209) and the Villum Foundation (00025333). European Union\u2019s Horizon 2020 research and innovation programme under grant agreement no. 101005611 for Transnational Access was conducted at the Wolfson Electron Microscope Suite, University of Cambridge, Department of Materials Science and Metallurgy (EvK). We acknowledge the use of the Thermo Fisher Spectra 300 TEM funded by EPSRC under grant EP/R008779/1.
Funding Information:
Acknowledgments: We thank M. K\u00FCffmeier and t. haugb\u00F8lle for their discussion on various aspects of this work. We appreciate the helpful contributions of the anonymous reviewers that have improved our manuscript. Funding: Funding for this project was provided by the villum Foundation (villum Young investigator Grant #53024) to e.v.K. as well as the carlsberg Foundation (cF18_1105) and the european Research council (eRc Advanced grant Agreement 833275\u2014deePtiMe) to M.B. M.B. acknowledges support from the villum Foundation (villum investigator Grant #54476). M.S. acknowledges support from the carlsberg Foundation (cF20_0209) and the villum Foundation (00025333). european Union\u2019s horizon 2020 research and innovation programme under grant agreement no. 101005611 for transnational Access was conducted at the Wolfson electron Microscope Suite, University of cambridge, department of Materials Science and Metallurgy (evK). We acknowledge the use of the thermo Fisher Spectra 300 teM funded by ePSRc under grant eP/R008779/1. Author contributions: conceptualization: e.v.K., M.B., and M.S. Methodology: e.v.K., M.B., and M.S. investigation: e.v.K., i.F., X.Z., J.W., P.-Y.t., S.F., i.O., and M.S. Writing\u2014original draft: e.v.K. and M.S. Writing\u2014review and editing: e.v.K., M.B., and M.S., and i.F. Resources: M.B., J.W., P.-Y.t., X.Z., and e.v.K. Funding acquisition: e.v.K., M.B., and M.S. visualization: e.v.K. and M.B. Supervision: J.W. and e.v.K. data curation: P.-Y.t. and e.v.K. validation: P.-Y.t., i.O., i.F., X.Z., and e.v.K. Formal analysis: e.v.K. and X.Z. Project administration: e.v.K. Competing interests: the authors declare that they have no competing interests. Data and materials availability: All data needed to evaluate the conclusions in the paper are present in the paper and/or the Supplementary Materials.
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