Gerhard, Ortwin Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;
Kobayashi, C., Bhattacharya, S., Arnaboldi, M., & Gerhard, O. (2023). On the α/Fe Bimodality of the M31 Disks. Astrophysical Journal, Letters, 956(1):. doi:10.3847/2041-8213/acf7c7.