Discovery of an $[Fe/H]\sim -4.8$ Star in $Gaia$ XP Spectra

Guilherme Limberg, Vinicius M. Placco, Alexander P. Ji +5

We report on the discovery of GDR3_526285 ($Gaia$ DR3 Source ID 5262850721755411072), a star with $[Fe/H]=-4.82\pm 0.25$ and one of the lowest metal ($\text{atomic number} >…