Meteorites have inherited nucleosynthetic anomalies of potassium-40 produced in supernovae
| العنوان: | Meteorites have inherited nucleosynthetic anomalies of potassium-40 produced in supernovae |
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| المؤلفون: | Nicole X. Nie, Da Wang, Zachary A. Torrano, Richard W. Carlson, Conel M. O’D. Alexander, Anat Shahar |
| المصدر: | Science. 379:372-376 |
| بيانات النشر: | American Association for the Advancement of Science (AAAS), 2023. |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Multidisciplinary |
| الوصف: | Meteorites record processes that occurred before and during the formation of the Solar System in the form of nucleosynthetic anomalies: isotopic compositions that differ from the Solar System patterns. Nucleosynthetic anomalies are rarely seen in volatile elements such as potassium at bulk meteorite scale. We measured potassium isotope ratios in 32 meteorites and identified nucleosynthetic anomalies in the isotope potassium-40. The anomalies are larger and more variable in carbonaceous chondrite (CC) meteorites than in noncarbonaceous (NC) meteorites, indicating that CCs inherited more material produced in supernova nucleosynthesis. The potassium-40 anomaly of Earth is close to that of the NCs, implying that Earth’s potassium was mostly delivered by NCs. |
| تدمد: | 1095-9203 0036-8075 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::96d31510e07a3c68598a9872f7c3ba61 https://doi.org/10.1126/science.abn1783 |
| رقم الأكسشن: | edsair.doi...........96d31510e07a3c68598a9872f7c3ba61 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10959203 00368075 |
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