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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 3.

Observed spectrum (black dots) and synthetic spectra in the CH G band near 4308–4315 Å (top panel) and the CN band around 3879.5–3883.5 Å (bottom panel). The orange lines represent the best-fit synthetic spectrum with carbon (﹩\mathrm{log}\epsilon ﹩ (C) = +5.53; top) and the combined carbon and nitrogen abundances (﹩\mathrm{log}\epsilon ﹩ (C, N) = +5.53, +5.88; bottom). In contrast, the gray lines show models without carbon or nitrogen. The orange shaded region represents the uncertainty in the synthetic models, ±0.2 dex.

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