Slow neutron-capture process: low-mass asymptotic giant branch stars and presolar silicon carbide grains
Presolar grains are microscopic dust grains that formed in the stellar winds or explosions of
ancient stars that died before the formation of the solar system. The majority (~ 90% in …
ancient stars that died before the formation of the solar system. The majority (~ 90% in …
Underground measurements of nuclear reaction cross-sections relevant to AGB stars
C Ananna, F Barile, A Boeltzig, CG Bruno, F Cavanna… - Universe, 2021 - mdpi.com
Nuclear reaction cross sections are essential ingredients to predict the evolution of AGB
stars and understand their impact on the chemical evolution of our Galaxy. Unfortunately, the …
stars and understand their impact on the chemical evolution of our Galaxy. Unfortunately, the …
Impact of newly measured 26Al(n, p)26Mg and 26Al(n, α)23Na reaction rates on the nucleosynthesis of 26Al in stars
U Battino, C Lederer-Woods, M Pignatari… - Monthly Notices of …, 2023 - academic.oup.com
The cosmic production of the short-lived radioactive nuclide 26Al is crucial for our
understanding of the evolution of stars and galaxies. However, simulations of the stellar sites …
understanding of the evolution of stars and galaxies. However, simulations of the stellar sites …
Proton ingestion in asymptotic giant branch stars as a possible explanation for J-type stars and AB2 grains
Context. J-type stars are a subclass of carbon stars that are generally Li-rich, not enriched in
s-elements, and have low 12 C/13 C ratios. They were suggested to be the manufacturers of …
s-elements, and have low 12 C/13 C ratios. They were suggested to be the manufacturers of …
Presolar O-and C-anomalous grains in unequilibrated ordinary chondrite matrices
Presolar grains are trace components in chondrite matrices. Their abundances and
compositions have been systematically studied in carbonaceous chondrites but rarely in situ …
compositions have been systematically studied in carbonaceous chondrites but rarely in situ …
Evaluation of the classification of pre-solar silicon carbide grains using consensus clustering with resampling methods: An assessment of the confidence of grain …
We report the use of several cluster analysis techniques to evaluate the classification of pre-
solar silicon carbide (SiC) grains. The stability of clusters and the confidence of individual …
solar silicon carbide (SiC) grains. The stability of clusters and the confidence of individual …
Isotope studies of presolar silicon carbide grains from supernovae: new constraints for hydrogen-ingestion supernova models
We report isotope data for C, N, Al, Si, and S of 33 presolar SiC and Si3N4 grains (0.3–1.6
μm) of Type X, C, D, and N from the Murchison CM2 meteorite of likely core-collapse …
μm) of Type X, C, D, and N from the Murchison CM2 meteorite of likely core-collapse …
Oxygen and aluminum-magnesium isotopic systematics of presolar nanospinel grains from CI chondrite Orgueil
Presolar oxide grains have been divided into several groups (Group 1 to 4) based on their O
isotopic compositions, which can be tied to several stellar sources. Much of the available …
isotopic compositions, which can be tied to several stellar sources. Much of the available …
Presolar silicon carbide grains of types Y and Z: their strontium and barium isotopic compositions and stellar origins
We report the Sr and Ba isotopic compositions of 18 presolar SiC grains of types Y (11) and
Z (7), rare types commonly argued to have formed in lower-than-solar metallicity asymptotic …
Z (7), rare types commonly argued to have formed in lower-than-solar metallicity asymptotic …
Machine learning opportunities for nucleosynthesis studies
MS Smith, D Lu - Frontiers in Astronomy and Space Sciences, 2024 - frontiersin.org
Nuclear astrophysics is an interdisciplinary field focused on exploring the impact of nuclear
physics on the evolution and explosions of stars and the cosmic creation of the elements …
physics on the evolution and explosions of stars and the cosmic creation of the elements …