3 papers
astro-ph.GA2026
The Actinide-Boost Star LAMOST J122216.85-063345.2: A Detailed R-process Abundance Study with Gemini-S/GHOST
Miji Jeong, Young Sun Lee, Vinicius M. Placco +15
We present a detailed chemical-abundance analysis of an actinide-boost ((Th/Dy) = -0.74) star, LAMOST J122216.85-063345.2 (J1222), a very metal-poor ([Fe/H] = -2.45) halo s…
astro-ph.IM2024
GHOST Reduced Data Products for the Gemini Observatory Community and Beyond
Vinicius M. Placco, David Herrera, Brian M. Merino +13
The Gemini High-resolution Optical SpecTrograph (GHOST) at Gemini South started regular queue operations in early 2024, bringing a long-sought open-access capability to the astrono…
astro-ph.SR2024
Discovery of Raman-Scattered C II Lines in V366 Carinae with GHOST/Gemini South
Jeong-Eun Heo, Miji Jeong
We report the detection of Raman-scattered C II lines at 7023 and 7054Ã in the symbiotic star V366 Carinae using GHOST at Gemini South. These faint features, originating from the C…