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dc.contributor.authorHunt, A.C.
dc.contributor.authorTheis, K.J.
dc.contributor.authorRehkämper, M.
dc.contributor.authorBenedix, Gretchen
dc.contributor.authorAndreasen, R.
dc.contributor.authorSchönbächler, M.
dc.date.accessioned2024-02-17T07:22:03Z
dc.date.available2024-02-17T07:22:03Z
dc.date.issued2022
dc.identifier.citationHunt, A.C. and Theis, K.J. and Rehkämper, M. and Benedix, G.K. and Andreasen, R. and Schönbächler, M. 2022. The dissipation of the solar nebula constrained by impacts and core cooling in planetesimals. Nature Astronomy. 6 (7): pp. 812-818.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/94369
dc.identifier.doi10.1038/s41550-022-01675-2
dc.description.abstract

Rapid cooling of planetesimal cores has been inferred for several iron meteorite parent bodies on the basis of metallographic cooling rates, and linked to the loss of their insulating mantles during impacts. However, the timing of these disruptive events is poorly constrained. Here, we used the short-lived 107Pd–107Ag decay system to date rapid core cooling by determining Pd–Ag ages for iron meteorites. We show that closure times for the iron meteorites equate to cooling in the time frame ~7.8–11.7 Myr after calcium–aluminium-rich inclusion formation, and that they indicate that an energetic inner Solar System persisted at this time. This probably results from the dissipation of gas in the protoplanetary disk, after which the damping effect of gas drag ceases. An early giant planet instability between 5 and 14 Myr after calcium–aluminium-rich inclusion formation could have reinforced this effect. This correlates well with the timing of impacts recorded by the Pd–Ag system for iron meteorites.

dc.languageEnglish
dc.publisherNATURE PORTFOLIO
dc.subjectScience & Technology
dc.subjectPhysical Sciences
dc.subjectAstronomy & Astrophysics
dc.subjectPD-AG CHRONOMETRY
dc.subjectIRON-METEORITES
dc.subjectCLOSURE TEMPERATURE
dc.subjectPLATINUM ISOTOPES
dc.subjectGIANT PLANETS
dc.subjectHISTORY
dc.subjectSYSTEM
dc.subjectORIGIN
dc.subjectACCRETION
dc.subjectCRYSTALLIZATION
dc.titleThe dissipation of the solar nebula constrained by impacts and core cooling in planetesimals
dc.typeJournal Article
dcterms.source.volume6
dcterms.source.number7
dcterms.source.startPage812
dcterms.source.endPage818
dcterms.source.issn2397-3366
dcterms.source.titleNature Astronomy
dc.date.updated2024-02-17T07:22:01Z
curtin.departmentResearch Excellence
curtin.accessStatusFulltext not available
curtin.facultyResearch Excellence
curtin.contributor.orcidBenedix, Gretchen [0000-0003-0990-8878]
curtin.contributor.researcheridBenedix, Gretchen [L-1953-2018]
dcterms.source.eissn2397-3366
curtin.contributor.scopusauthoridBenedix, Gretchen [6603638882]
curtin.repositoryagreementV3


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