839 citations · 4.1k across the 71 of their papers we have counts for
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The -Process Alliance: Enrichment of -process Elements in a Simulated Milky Way-like Galaxy
Yutaka Hirai, Timothy C. Beers, Young Sun Lee +11
We study the formation of stars with varying amounts of heavy elements synthesized by the rapid neutron-capture process (-process) based on our detailed cosmological zoom-in sim…
The R-Process Alliance: Fifth Data Release from the Search for R-Process-Enhanced Metal-poor Stars in the Galactic Halo with the GTC
Avrajit Bandyopadhyay, Rana Ezzeddine, Carlos Allende Prieto +9
Understanding the abundance pattern of metal-poor stars and the production of heavy elements through various nucleosynthesis processes offers crucial insights into the chemical evo…
The R-Process Alliance: 2MASS J22132050-5137385, the Star with the Highest-known r-process Enhancement at [Eu/Fe] = +2.45
Ian U. Roederer, Timothy C. Beers, Kohei Hattori +6
We present stellar parameters and chemical abundances of 47 elements detected in the bright (V = 11.63) very metal-poor ([Fe/H] = -2.20 +- 0.12) star 2MASS J22132050-5137385. We ob…
The ratio of [Eu/] differentiates accreted/in-situ Milky Way stars across metallicities, as indicated by both field stars and globular clusters
Stephanie Monty, Vasily Belokurov, Jason L. Sanders +7
We combine stellar orbits with the abundances of the heavy, -process element europium and the light, -element, silicon to separate in-situ and accreted populations in the Mil…
The R-Process Alliance: Analysis of Limited-r Stars
T. Xylakis-Dornbusch, T. T. Hansen, T. C. Beers +8
Context. In recent years, the R-Process Alliance (RPA) has conducted a successful search for stars enhanced in elements produced by the rapid neutron-capture (r-)process. In partic…
The -Process Alliance: Detailed Composition of an -Process Enhanced Star with UV and Optical Spectroscopy
Shivani P. Shah, Rana Ezzeddine, Ian U. Roederer +8
We present a detailed chemical-abundance analysis of a highly -process enhanced (RPE) star, 2MASS J00512646-1053170, using high-resolution spectroscopic observations with $Hubbl…