Photometric analysis yields metallicity distributions for 3917 stars across 12 faint Milky Way satellites, showing average [Fe/H] ~ -2.3 dex, 170 EMP candidates, and no gradients in ultra-faint systems.
Near-Field Cosmology with Metal-Poor Stars
2 Pith papers cite this work. Polarity classification is still indexing.
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abstract
The oldest, most metal-poor stars in the Galactic halo and satellite dwarf galaxies present an opportunity to explore the chemical and physical conditions of the earliest star forming environments in the Universe. We review the fields of stellar archaeology and dwarf galaxy archaeology by examining the chemical abundance measurements of various elements in extremely metal-poor stars. Focus on the carbon-rich and carbon-normal halo star populations illustrates how these provide insight into the Population III star progenitors responsible for the first metal enrichment events. We extend the discussion to near-field cosmology, which is concerned with the formation of the first stars and galaxies and how metal-poor stars can be used to constrain these processes. Complementary abundance measurements in high-redshift gas clouds further help to establish the early chemical evolution of the Universe. The data appear consistent with the existence of two distinct channels of star formation at the earliest times.
years
2026 2verdicts
UNVERDICTED 2representative citing papers
Discovery and classification of HE 1153-0518 as a new high-A(C) CEMP-no star among three EMP stars based on abundance patterns from high-resolution spectra.
citing papers explorer
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The Pristine Dwarf Galaxy Survey -- VII. The metallicity distributions of 12 Milky Way faint satellites
Photometric analysis yields metallicity distributions for 3917 stars across 12 faint Milky Way satellites, showing average [Fe/H] ~ -2.3 dex, 170 EMP candidates, and no gradients in ultra-faint systems.
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Three Extremely Metal-Poor stars: discovery of a new CEMP-no star
Discovery and classification of HE 1153-0518 as a new high-A(C) CEMP-no star among three EMP stars based on abundance patterns from high-resolution spectra.