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Radioactive nuclei in the early Solar system: analysis of the 15 isotopes produced by core-collapse supernovae

Lawson, Thomas V.; Pignatari, Marco; Stancliffe, Richard J.; Den Hartogh, Jacqueline; Jones, Sam; Fryer, Chris L.; Gibson, Brad K.; Lugaro, Maria


Thomas V. Lawson

Marco Pignatari

Richard J. Stancliffe

Jacqueline Den Hartogh

Sam Jones

Chris L. Fryer

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Professor Brad Gibson
Head of Physics; Director, E.A. Milne Centre for Astrophysics; Director of Research, Natural Sciences; Interim Associate Dean , Science & Engineering

Maria Lugaro


Short-lived radioactive isotopes (SLRs) with half-lives between 0.1 and 100 Myr can be used to probe the origin of the Solar system. In this work, we examine the core-collapse supernovae production of the 15 SLRs produced: 26Al, 36Cl, 41Ca, 53Mn, 60Fe, 92Nb, 97Tc, 98Tc, 107Pd, 126Sn, 129I, 135Cs, 146Sm, 182Hf, and 205Pb. We probe the impact of the uncertainties of the core-collapse explosion mechanism by examining a collection of 62 core-collapse models with initial masses of 15, 20, and 25 M⊙, explosion energies between 3.4 × 1050 and 1.8 × 1052 erg and compact remnant masses between 1.5 and 4.89 M⊙. We identify the impact of both explosion energy and remnant mass on the final yields of the SLRs. Isotopes produced within the innermost regions of the star, such as 92Nb and 97Tc, are the most affected by the remnant mass, 92Nb varying by five orders of magnitude. Isotopes synthesized primarily in explosive C-burning and explosive He-burning, such as 60Fe, are most affected by explosion energies. 60Fe increases by two orders of magnitude from the lowest to the highest explosion energy in the 15 M⊙ model. The final yield of each examined SLR is used to compare to literature models.


Lawson, T. V., Pignatari, M., Stancliffe, R. J., Den Hartogh, J., Jones, S., Fryer, C. L., …Lugaro, M. (2022). Radioactive nuclei in the early Solar system: analysis of the 15 isotopes produced by core-collapse supernovae. Monthly notices of the Royal Astronomical Society, 511(1), 886-902.

Journal Article Type Article
Acceptance Date Dec 13, 2021
Online Publication Date Dec 22, 2021
Publication Date Mar 1, 2022
Deposit Date Jan 22, 2022
Publicly Available Date Jan 24, 2022
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Oxford University Press
Peer Reviewed Peer Reviewed
Volume 511
Issue 1
Article Number stab3684
Pages 886-902
Keywords Stellar types: Massive stars; Supernovae; Nucleosynthesis
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Published paper (7.2 Mb)

Copyright Statement
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. ©2021 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

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