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A New Subclass of Carbon-enhanced Metal-poor Stars at Extremely Low Metallicity

We report the discovery of a new subclass of carbon-enhanced metal-poor (CEMP) stars, characterized by high absolute carbon abundances ( A (C) > 7.39) and extremely low metallicity ([Fe/H] ≤ –3.1) but notably lacking enhancements in neutron-capture elements, thus falling under the CEMP-no category....

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Principais autores: Young Sun Lee, Timothy C. Beers, Yutaka Hirai, Jihye Hong, Miji Jeong, Changmin Kim, Young Kwang Kim
Format: Artigo
Sprog:Inglês
Udgivet: IOP Publishing 2025-01-01
Serier:The Astrophysical Journal Letters
Fag:
CEMP stars
Milky Way stellar halo
Stellar abundances
Surveys
Online adgang:https://doi.org/10.3847/2041-8213/ae0641
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