2 papers
astro-ph.SR2026
Observational constraints on the origin of the elements. X. Combining NLTE and machine learning for chemical diagnostics of 4 million stars in the 4MIDABLE-HR survey
Nicholas Storm, Maria Bergemann, Tomasz RóżaÅski +9
We present the 4MOST-HR resolution Non-Local Thermal Equilibrium (NLTE) Payne artificial neural network (ANN), trained on new FGK spectra with 16 elements computed in NL…
astro-ph.GA2024
A Wide Metallicity Range for Gyr-old Stars in the Nuclear Star Cluster
Brian Thorsbro, Rebecca Forsberg, Georges Kordopatis +6
We report metallicities for three Gyr-old stars in the Milky Way nuclear star cluster (NSC) using high-resolution near-infrared spectroscopy. We derive effective temperatures…