Tracing Cosmic Fingerprints: Carbon Clues from the Faintest Galaxies

This paper studies stars in the ultra-faint dwarf galaxies Grus II and Tucana IV to search for carbon-enhanced metal-poor stars. Using spectroscopy, the authors identify several CEMP-no stars that preserve chemical signatures of the first stars. Their results suggest that faint supernovae from Population III stars strongly influenced early chemical enrichment in these ancient galaxies.