Speaker
Description
Metal-poor stars preserve fossil records of early nucleosynthesis and the chemical evolution of the Milky Way (MW). Carbon-enhanced metal-poor (CEMP) stars are especially useful tracers of the MW’s earliest enrichment. We obtained medium-resolution (R ~ 4000) spectra with Gemini/GMOS for a sample of bright CEMP candidates selected from the LAMOST survey. We derive stellar atmospheric parameters and measure the abundances of key elements, including C, Mg, Sr, and Ba, which are essential for identifying CEMP stars and investigating their nucleosynthetic origins. The abundance patterns obtained from these observations enable preliminary classification of the targets into CEMP subclasses and provide insight into the chemical enrichment history of the early MW. These results establish a foundation for future high-resolution spectroscopic follow-up aimed at detailed chemical abundance studies of newly identified CEMP stars.
| Category | Observation |
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