Show simple item record

dc.contributor.authorDauphas, N.
dc.contributor.authorCook, D. L.
dc.contributor.authorSacarabany, A.
dc.contributor.authorFroehlich, Carla
dc.contributor.authorDavis, A. M.
dc.contributor.authorWadhwa, M.
dc.contributor.authorPourmand, A.
dc.contributor.authorRauscher, T.
dc.contributor.authorGallino, R.
dc.date.accessioned2013-04-30T08:20:03Z
dc.date.available2013-04-30T08:20:03Z
dc.date.issued2008-10-10
dc.identifier.citationDauphas , N , Cook , D L , Sacarabany , A , Froehlich , C , Davis , A M , Wadhwa , M , Pourmand , A , Rauscher , T & Gallino , R 2008 , ' Iron 60 evidence for early injection and efficient mixing of stellar debris in the protosolar nebula ' , The Astrophysical Journal , vol. 686 , no. 1 , pp. 560-569 . https://doi.org/10.1086/589959
dc.identifier.issn0004-637X
dc.identifier.otherPURE: 1621412
dc.identifier.otherPURE UUID: 83242adb-38eb-435a-b6eb-157d33d0c989
dc.identifier.otherWOS: 000259822200046
dc.identifier.otherScopus: 53849113694
dc.identifier.urihttp://hdl.handle.net/2299/10603
dc.description.abstractAmong extinct radioactivities present in meteorites, Fe-60 (t(1/2) = 1.49 Myr) plays a key role as a high-resolution chronometer, a heat source in planetesimals, and a fingerprint of the astrophysical setting of solar system formation. A critical issue with 60Fe is that it could have been heterogeneously distributed in the protoplanetary disk, calling into question the efficiency of mixing in the solar nebula or the timing of 60Fe injection relative to planetesimal formation. If this were the case, one would expect meteorites that did not incorporate 60Fe (either because of late injection or incomplete mixing) to show Ni-60 deficits (from lack of 60Fe decay) and collateral effects on other neutron-rich isotopes of Fe and Ni (coproduced with Fe-60 in core-collapse supernovae and AGB stars). Here, we show that measured iron meteorites and chondrites have Fe and Ni isotopic compositions identical to Earth. This demonstrates that 60Fe must have been injected into the protosolar nebula and mixed to less than 10% heterogeneity before formation of planetary bodies.en
dc.format.extent10
dc.language.isoeng
dc.relation.ispartofThe Astrophysical Journal
dc.subjectmethods : analytical
dc.subjectsupernovae : general
dc.subjectCOLLATERAL CONSEQUENCES
dc.subjectMASSIVE STARS
dc.subjectnuclear reactions, nucleosynthesis, abundances
dc.subjectMETEORITE PARENT BODIES
dc.subjectEARLY SOLAR-SYSTEM
dc.subjectREFERENCE SAMPLE
dc.subjectISOTOPIC COMPOSITION
dc.subjectsolar system : formation
dc.subjectSHORT-LIVED RADIONUCLIDES
dc.subjectSUPERNOVA EJECTA
dc.subjectPROTOPLANETARY DISKS
dc.subjectNEARBY SUPERNOVA
dc.titleIron 60 evidence for early injection and efficient mixing of stellar debris in the protosolar nebulaen
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1086/589959
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record