Presolar grains as probes of supernova nucleosynthesis
We provide an overview of the isotopic signatures of presolar supernova grains, specifically focusing on 44Ti-containing grains with robustly inferred supernova origins and their implications for nucleosynthesis and mixing mechanisms in supernovae. Recent technique advancements have enabled the diff...
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| Hauptverfasser: | , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2024
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| In: |
Space science reviews
Year: 2024, Jahrgang: 220, Heft: 8, Pages: 1-37 |
| ISSN: | 1572-9672 |
| DOI: | 10.1007/s11214-024-01122-w |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1007/s11214-024-01122-w
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| Verfasserangaben: | Nan Liu, Maria Lugaro, Jan Leitner, Bradley S. Meyer, Maria Schönbächler |
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| 520 | |a We provide an overview of the isotopic signatures of presolar supernova grains, specifically focusing on 44Ti-containing grains with robustly inferred supernova origins and their implications for nucleosynthesis and mixing mechanisms in supernovae. Recent technique advancements have enabled the differentiation between radiogenic (from 44Ti decay) and nonradiogenic 44Ca excesses in presolar grains, made possible by enhanced spatial resolution of Ca-Ti isotope analyses with the Cameca NanoSIMS (Nano-scale Secondary Ion Mass Spectrometer) instrument. Within the context of presolar supernova grain data, we discuss (i) the production of 44Ti in supernovae and the impact of interstellar medium heterogeneities on the galactic chemical evolution of 44Ca/40Ca, (ii) the nucleosynthesis processes of neutron bursts and explosive H-burning in Type II supernovae, and (iii) challenges in identifying the progenitor supernovae for 54Cr-rich presolar nanospinel grains. Drawing on constraints and insights derived from presolar supernova grain data, we also provide an overview of our current understanding of the roles played by various supernova types - including Type II, Type Ia, and electron capture supernovae - in accounting for the diverse array of nucleosynthetic isotopic variations identified in bulk meteorites and meteoritic components. We briefly overview the potential mechanisms that have been proposed to explain these nucleosynthetic variations by describing the transport and distribution of presolar dust carriers in the protoplanetary disk. We highlight existing controversies in the interpretation of presolar grain data and meteoritic nucleosynthetic isotopic variations, while also outlining potential directions for future research. | ||
| 650 | 4 | |a Circumstellar dust | |
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| 650 | 4 | |a Electron capture supernovae | |
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| 650 | 4 | |a Nucleosynthesis | |
| 650 | 4 | |a Stellar astronomy | |
| 650 | 4 | |a Type Ia supernovae | |
| 650 | 4 | |a Type II supernovae | |
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