A Chemical Portrait of the Milky Way’s Heart: Mapping the Elements of the Nuclear Stellar Disc

Ryde et al. analyze nine stars in the Milky Way’s Nuclear Stellar Disc, measuring 18 chemical elements using infrared spectroscopy. Their results show strong chemical similarities between the NSD, Nuclear Star Cluster, and inner bulge, suggesting shared evolutionary histories. Sodium stands out with uniquely high levels, possibly linking the NSD to metal-rich clusters like Liller 1.