标题： 不同环境中的碳增强贫金属星 显示英文标题

标题： Carbon-enhanced metal-poor stars in different environments

摘要： 碳增强贫金属（CEMP）恒星的起源及其与第一代恒星产生的化学元素之间的可能联系仍然存在很大争议。 我们简要回顾不同环境中（银河系恒星晕、超暗弱和经典矮星系）CEMP恒星的观测结果，并利用局部集团形成的整体宇宙化学演化模型来解释它们的特性。 我们讨论当前观测结果对第一代恒星特性的意义，阐明在不同光度的矮星系中碳增强与碳正常恒星的比例为何会变化，并探讨在雕塑者矮星系中发现的第一颗CEMP(-no)恒星的起源。 显示英文摘要

摘要： The origin of carbon-enhanced metal-poor (CEMP) stars and their possible connections with the chemical elements produced by the first stellar generations is still highly debated. We briefly review observations of CEMP stars in different environments (Galactic stellar halo, ultra-faint and classical dwarf galaxies) and interpret their properties using cosmological chemical-evolution models for the formation of the Local Group. We discuss the implications of current observations for the properties of the first stars, clarify why the fraction of carbon-enhanced to carbon-normal stars varies in dwarf galaxies with different luminosity, and discuss the origin of the first CEMP(-no) star found in the Sculptor dwarf galaxy.