Atomic-scale Element and Isotopic Investigation of 25Mg-rich Stardust from an H-burning Supernova

Atomic-scale Element and Isotopic Investigation of 25Mg-rich Stardust from an H-burning Supernova

We have discovered a presolar olivine from ALH 77307 with the highest ^25 Mg isotopic composition measured in a silicate to date ( δ ^25 Mg = 3025.1‰ ± 38.3‰). Its isotopic compositions challenge current stellar models, with modeling of magnesium, silicon, and oxygen showing a closest match to forma...

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Bibliographic Details
Main Authors: N. D. Nevill, P. A. Bland, D. W. Saxey, W. D. A. Rickard, P. Guagliardo, N. E. Timms, L. V. Forman, L. Daly, S. M. Reddy
Format: Article
Language:English
Published: IOP Publishing 2024-01-01
Series:The Astrophysical Journal
Subjects:
Hydrogen burning
Stellar nucleosynthesis
Cosmochemistry
Type II supernovae
Isotopic abundances
Atomic spectroscopy
Online Access:https://doi.org/10.3847/1538-4357/ad2996

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