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SPLUS J142445.34–254247.1: An r-process–enhanced, Actinide-boost, Extremely Metal-poor Star Observed with GHOST

  • Authors: Vinicius M. Placco, Felipe Almeida-Fernandes, Erika M. Holmbeck, Ian U. Roederer, Mohammad K. Mardini, Christian R. Hayes, Kim Venn, Kristin Chiboucas, Emily Deibert, Roberto Gamen, Jeong-Eun Heo, Miji Jeong, Venu Kalari, Eder Martioli, Siyi Xu, Ruben Diaz, Manuel Gomez-Jimenez, David Henderson, Pablo Prado, Carlos Quiroz, Roque Ruiz-Carmona, Chris Simpson, Cristian Urrutia, Alan W. McConnachie, John Pazder, Gregory Burley, Michael Ireland, Fletcher Waller, Trystyn A. M. Berg, J. Gordon Robertson, Zachary Hartman, David O. Jones, Kathleen Labrie, Gabriel Perez, Susan Ridgway, Joanna Thomas-Osip

Vinicius M. Placco et al 2023 The Astrophysical Journal 959 .

  • Provider: AAS Journals

Caption: Figure 8.

﹩\mathrm{log}\epsilon (\mathrm{Th}/\mathrm{Eu})﹩ (left panel) and ﹩\mathrm{log}\epsilon (\mathrm{Eu})﹩ (right panel) as a function of [Fe/H] for metal-poor stars in the literature with both Th and Eu measured ([Fe/H] ≤ −1.0 and [Eu/Fe] ≥ +0.60), compared to SPLUS J1424−2542. The point sizes are proportional to [Eu/Fe] (left) and [Th/Fe] (right), according to the labels between the panels. The horizontal solid gray line marks the solar ﹩\mathrm{log}\epsilon (\mathrm{Th}/\mathrm{Eu})﹩ value and on the right panel, the limits for the r-II and r-III stars are shown. Individual references are given in Table 6.

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