642 citations · 907 across the 4 of their papers we have counts for
4 papers
The End of Nucleosynthesis: Production of Lead and Thorium in the Early Galaxy
Ian U. Roederer, Karl-Ludwig Kratz, Anna Frebel +4
We examine the Pb and Th abundances in 27 metal-poor stars (-3.1 < [Fe/H] < -1.4) whose very heavy metal (Z > 56) enrichment was produced only by the rapid (r-) nucleosynthesis pro…
Hf Transition Probabilities and Abundances
J. E. Lawler, E. A. Den Hartog, Z. E. Labby +3
Radiative lifetimes from laser-induced fluorescence measurements, accurate to about +/- 5 percent, are reported for 41 odd-parity levels of Hf II. The lifetimes are combined with b…
HST Observations of Heavy Elements in Metal-Poor Galactic Halo Stars
John J. Cowan, Christopher Sneden, Timothy C. Beers +6
We present new abundance determinations of neutron-capture elements Ge, Zr, Os, Ir, and Pt in a sample of 11 metal-poor (-3.1 <= [Fe/H] <= -1.6) Galactic halo giant stars, based on…
Galactic Evolution of Sr, Y, Zr: A Multiplicity of Nucleosynthetic Processes
Claudia Travaglio, Roberto Gallino, Enrico Arnone +3
We follow the Galactic enrichment of three easily observed light n-capture elements Sr,Y,and Zr.Input stellar yields have been first separated into their respective main and weak s…