81 citations · 513 across the 13 of their papers we have counts for
14 papers
Stellar Interpretation of Meteoritic Data and PLotting for Everyone (SIMPLE): Isotope Mixing Lines for Six Sets of Core-Collapse Supernova Models
Marco Pignatari, Mattias Ek, Georgy V. Makhatadze +15
Bulk meteorites and their inclusions exhibit, for many chemical elements, isotopic variability produced by nucleosynthetic events in stars and supernovae before the formation of th…
Silicon Isotopic Composition of Mainstream Presolar SiC Grains Revisited: The Impact of Nuclear Reaction Rate Uncertainties
Hung Kwan Fok, Marco Pignatari, Benoît Côté +1
Presolar grains are stardust particles that condensed in the ejecta or in the outflows of dying stars and can today be extracted from meteorites. They recorded the nucleosynthetic…
Horizons: Nuclear Astrophysics in the 2020s and Beyond
H. Schatz, A. D. Becerril Reyes, A. Best +162
Nuclear Astrophysics is a field at the intersection of nuclear physics and astrophysics, which seeks to understand the nuclear engines of astronomical objects and the origin of the…
Dark-matter And Neutrino Computation Explored (DANCE) Community Input to Snowmass
Amy Roberts, Christopher Tunnell, Belina von Krosigk +23
This paper summarizes the needs of the dark matter and neutrino communities as it relates to computation. The scope includes data acquisition, triggers, data management and process…
Origin of large meteoritic SiC stardust grains in metal-rich AGB stars
Maria Lugaro, Borbála Cseh, Blanka Világos +16
Stardust grains that originated in ancient stars and supernovae are recovered from meteorites and carry the detailed composition of their astronomical sites of origin. We present e…
Presolar Silicon Carbide Grains of Types Y and Z: Their Molybdenum Isotopic Compositions and Stellar Origins
Nan Liu, Thomas Stephan, Sergio Cristallo +8
We report Mo isotopic compositions of 37 presolar SiC grains of types Y (19) and Z (18), rare types commonly argued to have formed in lower-than-solar metallicity asymptotic giant…
Fe in core-collapse supernovae and prospects for X-ray and -ray detection in supernova remnants
Samuel Jones, Heiko Moeller, Chris L. Fryer +6
We investigate Fe in massive stars and core-collapse supernovae focussing on uncertainties that influence its production in 15, 20 and 25 stars at solar metallicit…
New constraints on the major neutron source in low-mass AGB stars
Nan Liu, Roberto Gallino, Sergio Cristallo +4
We compare updated Torino postprocessing asymptotic giant branch (AGB) nucleosynthesis model calculations with isotopic compositions of mainstream SiC dust grains from low-mass AGB…
Common Occurrence of Explosive Hydrogen Burning in Type II Supernovae
Nan Liu, Thomas Stephan, Patrick Boehnke +6
We report Mo isotopic data for 16 15N-rich presolar SiC grains of type AB (14N/15N<solar, AB1) and their correlated Sr and Ba isotope ratios when available. Eight of the 16 AB1 gra…
J-type carbon stars: A dominant source of 14N-rich presolar SiC grains of type AB
Nan Liu, Thomas Stephan, Patrick Boehnke +6
We report Mo isotopic data of 27 new presolar SiC grains, including 12 14N-rich AB (14N/15N>440, AB2) and 15 mainstream (MS) grains, and their correlated Sr and Ba isotope ratios w…
Application of a Theory and Simulation based Convective Boundary Mixing model for AGB Star Evolution and Nucleosynthesis
U. Battino, M. Pignatari, C. Ritter +8
The -process nucleosynthesis in Asymptotic Giant Branch (AGB) stars depends on the modeling of convective boundaries. We present models and s-process simulations that adopt a tr…
Carbon-rich presolar grains from massive stars. Subsolar 12C/13C and 14N/15N ratios and the mystery of 15N
M. Pignatari, E. Zinner, P. Hoppe +7
Carbon-rich grains with isotopic anomalies compared to the Sun are found in primitive meteorites. They were made by stars, and carry the original stellar nucleosynthesis signature.…
Silicon carbide grains of type C provide evidence for the production of the unstable isotope Si in supernovae
M. Pignatari, E. Zinner, M. G. Bertolli +8
Carbon-rich grains are observed to condense in the ejecta of recent core-collapse supernovae, within a year after the explosion. Silicon carbide grains of type X are C-rich grains…
MESA and NuGrid simulations of classical novae: CO and ONe nova nucleosynthesis
Pavel A. Denissenkov, James W. Truran, Marco Pignatari +6
Classical novae are the result of thermonuclear flashes of hydrogen accreted by CO or ONe white dwarfs, leading eventually to the dynamic ejection of the surface layers. These are…