Diverse supernova sources of pre-solar material inferred from molybdenum isotopes in meteorites

Qingzhu Yin, Stein B. Jacobsen () and Katsuyuki Yamashita
Additional contact information
Qingzhu Yin: Harvard University
Stein B. Jacobsen: Harvard University
Katsuyuki Yamashita: Harvard University

Nature, 2002, vol. 415, issue 6874, 881-883

Abstract: Abstract Variations in the isotopic composition of some components in primitive meteorites demonstrate that the pre-solar material was not completely homogenized, nor was it processed at sufficiently high temperatures to erase the signatures of the diverse stellar sources1. This is in accord with the observation that accretion disks of young stellar objects are at relatively low temperatures2. Carbonaceous chondrites are considered to represent the ‘average’ Solar System composition; the rare pre-solar grains in the matrixes of carbonaceous chondrites3 have been used to identify some sources of the pre-solar material. Here we report that the molybdenum isotopic composition of bulk carbonaceous chondrites is distinctly different from the accepted average solar value. We show that the Mo data require the presence of material produced in at least two different r-processes, and that the contribution from the p-process material is decoupled from the r-process, all occurring in supernova explosions. This is consistent with the emerging picture of diverse sources inferred from short-lived isotopes in the early Solar System4 and elemental analyses of metal-poor stars5,6.

Date: 2002
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/415881a Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:nature:v:415:y:2002:i:6874:d:10.1038_415881a

Ordering information: This journal article can be ordered from
https://www.nature.com/

DOI: 10.1038/415881a

Access Statistics for this article

Nature is currently edited by Magdalena Skipper

More articles in Nature from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().