activity
20092026
most citedThe -Process Alliance: First Release from the Southern Search for -Process-Enhanced Stars in the Galactic Halo

166 citations · 1.7k across the 56 of their papers we have counts for

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Showing astro-ph.GAShow all

22 papers · 1 filter

astro-ph.GA2026

The -Process Alliance: The -Process Enhancement of Stars from Chemodynamically Tagged Groups in the Milky Way Halo

Jessica Merritt Agnos, Charli M. Sakari, Pedro Silva +9

As part of the ongoing work of the -Process Alliance (RPA), detailed abundance measurements of 29 heavy elements in three metal-poor stars, 2MASS J145929813852558, 2MASS J194…

astro-ph.GA2025

Accreted Globular Clusters and Horizontal Branch Morphology in the Outer Halo of M31

Gracie McGill, Annette M. N. Ferguson, Dougal Mackey +7

M31 hosts a rich population of outer halo ( kpc) globular clusters (GCs), many of which show strong evidence for spatial and/or kinematical associations with la…

astro-ph.GA2024

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…

astro-ph.GA2024★ 1 cited

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…

astro-ph.GA2022★ 28 cited

The R-Process Alliance: Chemo-Dynamically Tagged Groups II. An Extended Sample of Halo -Process-Enhanced Stars

Derek Shank, Timothy C. Beers, Vinicius M. Placco +8

Orbital characteristics based on Gaia Early Data Release 3 astrometric parameters are analyzed for -process-enhanced (RPE; [Eu/Fe] ) metal-poor stars ([Fe/…

astro-ph.GA2022★ 8 cited

Metallicities of Outer Halo M31 Globular Clusters from Integrated Light Calcium-II Triplet Spectroscopy

Charli Sakari, George Wallerstein

This paper presents [Fe/H] ratios for GCs in the outer halo of the Andromeda Galaxy, M31, based on moderate-resolution, integrated light (IL) spectroscopy of the calcium-II triplet…