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Evaluating Classifications of Extremely Metal-poor Candidates Selected from Gaia XP Spectra

  • Authors: Riley Thai, Andrew R. Casey, Alexander P. Ji, Vedant Chandra, Hans-Walter Rix

Riley Thai et al 2026 The Astronomical Journal 171 .

  • Provider: AAS Journals

Caption: Figure 2.

Chemical abundances and upper limits [X/Fe] against metallicity [Fe/H] for our 21 elements (24 species) across our 75 metal-poor stars. Points are colored by effective temperature Teff, with chemically unusual stars highlighted and median errors shown in the upper left corner of each panel. The solar ratio at [X/H] = 0 is highlighted with a dashed line for reference. Abundances of halo stars from the SAGA database are plotted in gray (T. Suda et al. 2008). [C/Fe] is corrected for evolutionary effects based on V. M. Placco et al. (2014). The chemical abundances we derive are consistent with expected ranges for Milky Way halo stars.

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