Evaluating Classifications of Extremely Metal-poor Candidates Selected from Gaia XP Spectra
Abstract
Extremely metal-poor stars are intrinsically rare, but emerging methods exist to accurately classify them from all-sky Gaia XP low-resolution spectra. To assess their overall accuracy for targeting metal-poor stars, we present a high-resolution spectroscopic followup of 75 very metal-poor candidates selected from the catalog by R. Andrae, V. Chandra, and H. W. Rix. We discover 2 new extremely metal-poor ($\rm{[Fe / H]}
Fields of Study & Subjects
Stellar
planetary
and galactic studies
Astronomy and Astrophysical Research
Galaxies: Formation
Evolution
Phenomena
Publication details
- Journal / source
- arXiv (Cornell University)
- Publication date
- 29 January 2026
- Document type
- Preprint