128 citations · 223 across the 2 of their papers we have counts for
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astro-ph.SR2018★ 95 cited
The R-Process Alliance: A Comprehensive Abundance Analysis of HD 222925, a Metal-Poor Star with an Extreme R-Process Enhancement of [Eu/H] = -0.14
Ian U. Roederer, Charli M. Sakari, Vinicius M. Placco +4
We present a detailed abundance analysis of the bright (V = 9.02), metal-poor ([Fe/H] = -1.47 +/- 0.08) field red horizontal-branch star HD 222925, which was observed as part of an…
astro-ph.SR2009★ 128 cited
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…