Oxygen-enhanced Extremely Metal-poor Damped Lyα Systems: A Signpost of the First Stars?
(2022)
Journal Article
Welsh, L., Cooke, R., Fumagalli, M., & Pettini, M. (2022). Oxygen-enhanced Extremely Metal-poor Damped Lyα Systems: A Signpost of the First Stars?. Astrophysical Journal, 929(2), Article 158. https://doi.org/10.3847/1538-4357/ac4503
We present precise abundance determinations of two near-pristine damped Lyα systems (DLAs) to assess the nature of the [O/Fe] ratio at [Fe/H] < −3.0 (i.e.,