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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 5.

Upper panel: light-element chemical abundance pattern of SPLUS J1424−2542, (filled circles, LTE) compared with the yields from metal-free supernova models (solid lines). The labels show the progenitor mass and explosion energy of the models and their percentage occurrence among the 10,000 abundance pattern resamples of SPLUS J1424−2542. Lower panel: residuals between the observations and the two best-fit models. A ±0.3 dex shaded area is shown for reference.

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