@article { , title = {129I and 247Cm in meteorites constrain the last astrophysical source of solar r-process elements}, abstract = {Meteoritic analysis demonstrates that radioactive nuclei heavier than iron were present in the early Solar System. Among them, \$\^\{129\}\$I and \$\^\{247\}\$Cm both have a rapid neutron-capture process (\$r\$ process) origin and decay on the same timescale (\$\\simeq\$ 15.6 Myr). We show that the \$\^\{129\}\$I/\$\^\{247\}\$Cm abundance ratio in the early Solar System (438\$\\pm\$184) is immune to galactic evolution uncertainties and represents the first direct observational constraint for the properties of the last \$r\$-process event that polluted the pre-solar nebula. We investigate the physical conditions of this event using nucleosynthesis calculations and demonstrate that moderately neutron-rich ejecta can produce the observed ratio. We conclude that a dominant contribution by exceedingly neutron-rich ejecta is highly disfavoured.}, doi = {10.1126/science.aba1111}, issn = {0036-8075}, issue = {6532}, journal = {Science}, note = {33 pages, 5 figures, 5 tables}, pages = {945-948}, publicationstatus = {Published}, publisher = {American Association for the Advancement of Science}, url = {https://hull-repository.worktribe.com/output/3523740}, volume = {371}, keyword = {E.A. Milne Centre for Astrophysics, High Performance Computing (Hull Viper), Specialist Research - Other, Solar and Stellar Astrophysics, High Energy Astrophysical Phenomena, Nuclear Theory}, year = {2021}, author = {Côté, Benoit and Eichler, Marius and Yagüe, Andrés and Vassh, Nicole and R. Mumpower, Matthew and Világos, Blanka and Soós, Benjámin and Arcones, Almudena and M. Sprouse, Trevor and Surman, Rebecca and Pignatari, Marco and Pető, Mária K. and Wehmeyer, Benjamin and Rauscher, Thomas and Lugaro, Maria} }