Speaker
Dr
Ian Roederer
(Carnegie Observatories)
Description
We present new abundance determinations of the heavy elements germanium (Ge, Z=32), arsenic (As, Z=33), selenium (Se, Z=34), and tellurium (Te, Z=52) in several metal-poor stars enriched with r-process material. These recent results mark the first detection of As, Se, and Te in an r-process environment beyond the solar system. In addition, detection of the elements at the third r-process peak in some of these stars enable us to constrain the relative abundances of all three r-process peaks, which may pose a challenge to theory in some cases.
Primary author
Dr
Ian Roederer
(Carnegie Observatories)
