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The 12C + 12C reaction and the impact on nucleosynthesis in massive stars
M. Pignatari, R. Hirschi, M. Wiescher +7
Despite much effort in the past decades, the C-burning reaction rate is uncertain by several orders of magnitude, and the relative strength between the different channels 12C(12C,a…
Reproducing the observed abundances in RCB and HdC stars with post-double degenerate merger models - constraints on merger and post-merger simulations and physics processes
Athira Menon, Falk Herwig, Pavel A. Denissenkov +4
The R Coronae Borealis (RCB) stars are hydrogen-deficient, variable stars that are most likely the result of He-CO WD mergers. They display extremely low oxygen isotopic ratios, 16…
Nova Framework: A New Tool For Modeling of Nova Outbursts and Nucleosynthesis
Pavel A. Denissenkov, Falk Herwig, Marco Pignatari +1
Classical novae are the results of surface thermonuclear explosions of H-rich material accreted by white dwarfs (WDs) from their low-mass main-sequence or red-giant binary companio…
Do R Coronae Borealis Stars Form from Double White Dwarf Mergers?
Jan. E. Staff, Athira Menon, Falk Herwig +7
A leading formation scenario for R Coronae Borealis (RCB) stars invokes the merger of degenerate He and CO white dwarfs (WD) in a binary. The observed ratio of 16O/18O for RCB star…
The effect of 12C + 12C rate uncertainties on the evolution and nucleosynthesis of massive stars
M. E. Bennett, R. Hirschi, M. Pignatari +8
[Shortened] The 12C + 12C fusion reaction has been the subject of considerable experimental efforts to constrain uncertainties at temperatures relevant for stellar nucleosynthesis.…