Stellar Loci. VIII. Photometric Metallicities for 100 Million Stars Based on Synthetic Gaia Colors

Bowen Huang, Haibo Yuan, Shuai Xu +4

We apply the stellar locus method to synthetic $(BP-RP{)}_{XPSP}$ and $(BP-G{)}_{XPSP}$ colors derived from corrected Gaia BP/RP (XP) spectra to obtain precise estimates of metallicity…