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The Actinide-boost Star LAMOST J122216.85–063345.2: A Detailed r-process Abundance Study with Gemini-S/GHOST

  • Authors: Miji Jeong, Young Sun Lee, 영선 이, Vinicius M. Placco, Yutaka Hirai, Timothy C. Beers, Jeong-Eun Heo, Kristin Chiboucas, Emily Deibert, Roberto Gamen, Venu M. Kalari, Eder Martioli, Ruben Diaz, Manuel Gomez- Jimenez, Roque Ruiz-Carmona, Greg Burley, J. Gordon Robertson, Kathleen Labrie, Joanna Thomas-Osip

Miji Jeong et al 2026 The Astrophysical Journal 1005 .

  • Provider: AAS Journals

Caption: Figure 2.

Top panel: determination of the carbon isotope ratio (12C/13C) for J1222. The black squares are the observed spectrum, and the red solid line is the best-matched synthetic spectrum. The other colored solid lines show various spectral fits of 12C/13C = 2, 4, 9, and 20. Bottom panel: residual plot of the top panel.

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