Speaker
Description
The light heavy elements between strontium and silver, can be synthesized in a primary process in either neutron- (weak r-process) or proton-rich (νp-process) neutrino-driven outflows of explosive environments [1]. Constraining the nuclear physics uncertainties, for example the (α,xn) reaction rates in the weak r-process [2,3], allows us to investigate the conditions that create the light heavy elements. We have used an extensive library of astrophysical conditions of both neutron- and proton-rich neutrino-driven outflows, as well as combinations of the two to reproduce the abundance patterns observed in metal poor stars with enhanced light heavy element production, such as HD 122563 [4]. Our preliminary results suggest that there are specific combinations of conditions that can reproduce the light heavy elemental abundances observed in such stars.
*This work was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—Project No. 279384907—SFB 1245, the European Research Council Grant No. 677912 EUROPIUM, and the State of Hesse within the Research Cluster ELEMENTS (Project ID 500/10.006)
References
[1] A. Arcones and F. Montes, Astrophys. J. 731 5 (2011)
[2] J. Bliss et al., Phys. Rev. C 101 055807 (2020)
[3] A. Psaltis et al., Astrophys. J. 935 27 (2022)
[4] S. Honda et al., Astrophys. J. 666 1189 (2007)
| Please select a main topic related to your abstract | Explosive Stellar Objects and Nuclear Physics |
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