255 citations · 5.8k across the 143 of their papers we have counts for
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Pop III -process Nucleosynthesis and the Elemental Abundances of SMSS J0313-6708 and the Most Iron-Poor Stars
O. Clarkson, F. Herwig, M. Pignatari
We have investigated a highly energetic H-ingestion event during shell He burning leading to H-burning luminosities of $\log(L_\mathrm{H}/\mathrm{\Lsun}) \sim 13$ in a $45 \Msun$ P…
The 12C(a,g)16O reaction and its implications for stellar helium burning
R. J. deBoer, J. Gorres, M. Wiescher +10
The creation of carbon and oxygen in our universe is one of the forefront questions in nuclear astrophysics. The determination of the abundance of these elements is key to both our…
NuGrid Stellar Data Set. II. Stellar Yields from H to Bi for Stellar Models with Mzams = 1 to 25Msun and Z = 0.0001 to 0.02
C. Ritter, F. Herwig, S. Jones +3
We provide here a significant extension of the NuGrid Set 1 models in mass coverage and toward lower metallicity, adopting the same physics assumptions. The combined data set now i…
Stellar origin of 15N-rich presolar SiC grains of type AB: supernovae with explosive hydrogen burning
Nan Liu, Larry R. Nittler, Marco Pignatari +2
We report C, N, and Si isotopic data for 59 highly 13C-enriched presolar submicron- to micron-sized SiC grains from the Murchison meteorite, including eight putative nova grains (P…
Observing the metal-poor solar neighbourhood: a comparison of galactic chemical evolution predictions
T. Mishenina, M. Pignatari, B. Cot'e +14
Atmospheric parameters and chemical compositions for ten stars with metallicities in the region of -2.2< [Fe/H] <-0.6 were precisely determined using high resolution, high signal t…
Convective-reactive nucleosynthesis of K, Sc, Cl and p-process isotopes in O-C shell mergers
C. Ritter, R. Andrassy, B. Côté +4
We address the deficiency of odd-Z elements P, Cl, K and Sc in galactic chemical evolution models through an investigation of the nucleosynthesis of interacting convective O- and C…
Stellar yields and abundances: new directions from planetary nebulae
Maria Lugaro, Amanda I. Karakas, Marco Pignatari +1
Planetary nebulae retain the signature of the nucleosynthesis and mixing events that occurred during the previous AGB phase. Observational signatures complement observations of AGB…
A chemical signature from fast-rotating low-metallicity massive stars: ROA 276 in omega Centauri
David Yong, John E. Norris, Gary S. Da Costa +5
We present a chemical abundance analysis of a metal-poor star, ROA 276, in the stellar system omega Centauri. We confirm that this star has an unusually high [Sr/Ba] abundance rati…
Stellar () cross section of Na
E. Uberseder, M. Heil, F. Käppeler +5
The cross section of the Na()Na reaction has been measured via the activation method at the Karlsruhe 3.7 MV Van de Graaff accelerator. NaCl samples were expose…