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Inhomogeneous Chemical Evolution of r-process Elements in the Galactic Halo

Wehmeyer, B. and Pignatari, M. and Thielemann, F. -K.. (2017) Inhomogeneous Chemical Evolution of r-process Elements in the Galactic Halo. In: Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016), 14. 020201.

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Abstract

For the production of r-process elements in our Galaxy, multiple sites have been discussed, among others, core-collapse supernovae and neutron star mergers. We use the observed elemental abundances of europium (Eu) in metal poor stars to reproduce the galactic chemical evolution of r-process elements. Our main findings are that additionally to neutron star mergers, a second, early acting site is necessary. We assume “magnetorotationally driven supernovae” act as this additional and earlier r-process site and conclude that our simulations with an adequate combination of these two sites successfully reproduces the observed r-process elemental abundances in the Galactic halo.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:Thielemann, Friedrich-Karl and Wehmeyer, Benjamin
Item Type:Conference or Workshop Item, refereed
Conference or workshop item Subtype:Conference Paper
Publisher:Japanese Physical Society
Series Name:JPS Conference Proceedings
Note:Publication type according to Uni Basel Research Database: Conference paper
Language:English
Identification Number:
Last Modified:12 Mar 2018 11:03
Deposited On:12 Mar 2018 11:03

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