All Outputs (7)

Remnants and ejecta of thermonuclear electron-capture supernovae: Constraining oxygen-neon deflagrations in high-density white dwarfs (2018)
Journal Article
Jones, S., Röpke, F. K., Fryer, C., Ruiter, A. J., Seitenzahl, I. R., Nittler, L. R., Ohlmann, S. T., Reifarth, R., Pignatari, M., & Belczynski, K. (2019). Remnants and ejecta of thermonuclear electron-capture supernovae: Constraining oxygen-neon deflagrations in high-density white dwarfs. Astronomy and Astrophysics, 622, Article A74. https://doi.org/10.1051/0004-6361/201834381

The explosion mechanism of electron-capture supernovae (ECSNe) remains equivocal: it is not completely clear whether these events are implosions in which neutron stars are formed, or incomplete thermonuclear explosions that leave behind bound ONeFe w... Read More about Remnants and ejecta of thermonuclear electron-capture supernovae: Constraining oxygen-neon deflagrations in high-density white dwarfs.

The s process in AGB stars as constrained by a large sample of barium stars (2018)
Journal Article
Cseh, B., Lugaro, M., D'Orazi, V., de Castro, D. B., Pereira, C. B., Karakas, A. I., Molnár, L., Plachy, E., Szabó, R., Pignatari, M., & Cristallo, S. (2018). The s process in AGB stars as constrained by a large sample of barium stars. Astronomy and Astrophysics, 620, https://doi.org/10.1051/0004-6361/201834079

© ESO 2018. Context. Barium (Ba) stars are dwarf and giant stars enriched in elements heavier than iron produced by the slow neutron-capture process (s process). These stars belong to binary systems in which the primary star evolved through the asymp... Read More about The s process in AGB stars as constrained by a large sample of barium stars.

Corrigendum to “Iron and nickel isotope compositions of presolar silicon carbide grains from supernovae” [Geochim. Cosmochim. Acta 221 (2018) 127–144] (2018)
Journal Article
Kodolányi, J., Stephan, T., Trappitsch, R., Hoppe, P., Pignatari, M., Davis, A. M., & Pellin, M. J. (2018). Corrigendum to “Iron and nickel isotope compositions of presolar silicon carbide grains from supernovae” [Geochim. Cosmochim. Acta 221 (2018) 127–144]. Geochimica et cosmochimica acta, 239, 481-482. https://doi.org/10.1016/j.gca.2018.07.042

NuGrid stellar data set – II. Stellar yields from H to Bi for stellar models with MZAMS = 1–25 M⊙ and Z = 0.0001–0.02 (2018)
Journal Article
Ritter, C., Herwig, F., Jones, S., Pignatari, M., Fryer, C., & Hirschi, R. (2018). NuGrid stellar data set – II. Stellar yields from H to Bi for stellar models with MZAMS = 1–25 M⊙ and Z = 0.0001–0.02. Monthly notices of the Royal Astronomical Society, 480(1), 538-571. https://doi.org/10.1093/mnras/sty1729

We provide here a significant extension of the NuGrid Set 1 models in mass coverage and towards lower metallicity, adopting the same physics assumptions. The combined data set now includes the initial masses
MZAMS/M⊙

= 1, 1.65, 2, 3, 4, 5, 6, 7,... Read More about NuGrid stellar data set – II. Stellar yields from H to Bi for stellar models with MZAMS = 1–25 M⊙ and Z = 0.0001–0.02.

The impact of (n, γ) reaction rate uncertainties of unstable isotopes near N = 50 on the i-process nucleosynthesis in He-shell flash white dwarfs (2018)
Journal Article
Denissenkov, P., Perdikakis, G., Herwig, F., Schatz, H., Ritter, C., Pignatari, M., Jones, S., Nikas, S., & Spyrou, A. (2018). The impact of (n, γ) reaction rate uncertainties of unstable isotopes near N = 50 on the i-process nucleosynthesis in He-shell flash white dwarfs. Journal of Physics G: Nuclear and Particle Physics, 45(5), 055203. https://doi.org/10.1088/1361-6471/aabb6e

The first-peak s-process elements Rb, Sr, Y and Zr in the post-AGB star Sakurai's object (V4334 Sagittarii) have been proposed to be the result of i-process nucleosynthesis in a post-AGB very-late thermal pulse event. We estimate the nuclear physics... Read More about The impact of (n, γ) reaction rate uncertainties of unstable isotopes near N = 50 on the i-process nucleosynthesis in He-shell flash white dwarfs.

i-process contribution of rapidly accreting white dwarfs to the solar composition of first-peak neutron-capture elements (2018)
Journal Article
Côté, B., Denissenkov, P., Herwig, F., Ruiter, A. J., Ritter, C., Pignatari, M., & Belczynski, K. (2018). i-process contribution of rapidly accreting white dwarfs to the solar composition of first-peak neutron-capture elements. The Astrophysical journal, 854(2), 1-14. https://doi.org/10.3847/1538-4357/aaaae8

Rapidly accreting white dwarfs (RAWDs) have been proposed as contributors to the chemical evolution of heavy elements in the Galaxy. Here, we test this scenario for the first time and determine the contribution of RAWDs to the solar composition of fi... Read More about i-process contribution of rapidly accreting white dwarfs to the solar composition of first-peak neutron-capture elements.

Role of core-collapse supernovae in explaining Solar System abundances of p nuclides (2018)
Journal Article
Travaglio, C., Rauscher, T., Heger, A., Pignatari, M., & West, C. (2018). Role of core-collapse supernovae in explaining Solar System abundances of p nuclides. The Astrophysical journal, 854(1), Article 18. https://doi.org/10.3847/1538-4357/aaa4f7

The production of the heavy stable proton-rich isotopes between 74Se and 196Hg—the p nuclides—is due to the contribution from different nucleosynthesis processes, activated in different types of stars. Whereas these processes have been subject to var... Read More about Role of core-collapse supernovae in explaining Solar System abundances of p nuclides.