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Nucleosynthesis in early supernova winds III: No significant contribution from neutron-rich pockets
R. D. Hoffman, J. Pruet, J. L. Fisker +3
Recent nucleosynthesis calculations of Type II supernovae using advanced neutrino transport determine that the early neutrino winds are proton-rich. However, a fraction of the ejec…
On the origin of the lightest Molybdenum isotopes
Jacob Lund Fisker, Robert D. Hoffman, Jason Pruet
We discuss implications of recent precision measurements for the Rh93 proton separation energy for the production of the lightest molybdenum isotopes in proton-rich type II superno…
Nucleosynthesis in Early Supernova Winds II: The Role of Neutrinos
J. Pruet, R. D. Hoffman, S. E. Woosley +2
One of the outstanding unsolved riddles of nuclear astrophysics is the origin of the so called ``p-process'' nuclei from A = 92 to 126. Both the lighter and heavier p-process nucle…
Nucleosynthesis in Outflows from the Inner Regions of Collapsars
Jason Pruet, Todd Thompson, R. D. Hoffman
We consider nucleosynthesis in outflows originating from the inner regions of viscous accretion disks formed after the collapse of a rotating massive star. We show that wind-like o…
Models for Type I X-Ray Bursts with Improved Nuclear Physics
S. E. Woosley, A. Heger, A. Cumming +6
Multi-zone models of Type I X-ray bursts are presented that use an adaptive nuclear reaction network of unprecedented size, up to 1300 isotopes. Sequences of up to 15 bursts are fo…
Nucleosynthesis in Gamma Ray Burst Accretion Disks
Jason Pruet, S. E. Woosley, R. D. Hoffman
We follow the nuclear reactions that occur in the accretion disks of stellar mass black holes that are accreting at a very high rate, 0.01 to 1 solar masses per second, as is reali…
Nucleosynthesis in Massive Stars With Improved Nuclear and Stellar Physics
T. Rauscher, A. Heger, R. D. Hoffman +1
We present the first calculations to follow the evolution of all stable nuclei and their radioactive progenitors in stellar models computed from the onset of central hydrogen burni…
Nuclear Aspects of the s- and n-Processes in Massive Stars
T. Rauscher, A. Heger, S. E. Woosley +1
In order to study the processes creating intermediate and heavy nuclei in massive stars it is necessary to provide neutron capture cross sections and reaction rates close to stabil…
Nucleosynthesis in Massive Stars - Including All Stable Isotopes
A. Heger, R. D. Hoffman, T. Rauscher +1
We present the first calculations to follow the evolution of all stable isotopes (and their abundant radioactive progenitors) in a finely zoned stellar model computed from the onse…
The Reaction Rate Sensitivity of Nucleosynthesis in Type II Supernovae
R. D. Hoffman, S. E. Woosley, T. A. Weaver +3
We explore the sensitivity of the nucleosynthesis of intermediate mass elements (28 < A < 80) in supernovae derived from massive stars to the nuclear reaction rates employed in the…
Nucleosynthesis in neutrino-driven winds: II. Implications for heavy element synthesis
R. D. Hoffman, S. E. Woosley, Y. -Z. Qian
During the first 20 seconds of its life, the enormous neutrino luminosity of a neutron star drives appreciable mass loss from its surface. This neutrino-driven wind has been previo…
26Al and 60Fe From Supernova Explosions
F. X. Timmes, S. E. Woosley, D. H. Hartmann +3
Using recently calculated yields for Type II supernovae, along with models for chemical evolution and the distribution of mass in the interstellar medium, the current abundances an…