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Type Ia Supernova Nucleosynthesis: Metallicity-dependent Yields

Keegans, James D.; Pignatari, Marco; Stancliffe, Richard J.; Travaglio, Claudia; Jones, Samuel; Gibson, Brad K.; Townsley, Dean M.; Miles, Broxton J.; Shen, Ken J.; Few, Gareth


James D. Keegans

Marco Pignatari

Richard J. Stancliffe

Claudia Travaglio

Samuel Jones

Brad K. Gibson

Dean M. Townsley

Broxton J. Miles

Ken J. Shen


Type Ia supernova explosions (SN Ia) are fundamental sources of elements for the chemical evolution of galaxies. They efficiently produce intermediate-mass (with Z between 11 and 20) and iron group elements - for example, about 70% of the solar iron is expected to be made by SN Ia. In this work, we calculate complete abundance yields for 39 models of SN Ia explosions, based on three progenitors - a 1.4 M ⊙ deflagration detonation model, a 1.0 M ⊙ double detonation model, and a 0.8 M ⊙ double detonation model - and 13 metallicities, with 22Ne mass fractions of 0, 1 × 10-7, 1 × 10-6, 1 × 10-5, 1 × 10-4, 1 × 10-3, 2 × 10-3, 5 × 10-3, 1 × 10-2, 1.4 × 10-2, 5 × 10-2, and 0.1, respectively. Nucleosynthesis calculations are done using the NuGrid suite of codes, using a consistent nuclear reaction network between the models. Complete tables with yields and production factors are provided online at Zenodo:Yields ( We discuss the main properties of our yields in light of the present understanding of SN Ia nucleosynthesis, depending on different progenitor mass and composition. Finally, we compare our results with a number of relevant models from the literature.


Keegans, J. D., Pignatari, M., Stancliffe, R. J., Travaglio, C., Jones, S., Gibson, B. K., …Few, G. (2023). Type Ia Supernova Nucleosynthesis: Metallicity-dependent Yields. Astrophysical Journal Supplement, 268(1), Article 8.

Journal Article Type Article
Acceptance Date Jun 20, 2023
Online Publication Date Aug 22, 2023
Publication Date Sep 1, 2023
Deposit Date Jun 26, 2024
Publicly Available Date Jun 27, 2024
Journal Astrophysical Journal, Supplement Series
Print ISSN 0067-0049
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 268
Issue 1
Article Number 8
Keywords Type Ia supernovae; Nucleosynthesis; Astrophysical explosive burning; Nuclear astrophysics
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Copyright Statement
© 2023. The Author(s). Published by the American Astronomical Society.
Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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