Beyond OCCAM: Measuring Optical Neutron Capture Abundances of Open Cluster Stars (2510.13014v1)

Abstract: Open clusters have long been used to determine ages of stars, as well as calibrate stellar evolution models and other methods of age-dating stellar groups, e.g., gyrochronology, asteroseismology, and chemical clocks. In this work, we have obtained new high-resolution (R $\ge$ 50,000), high-S/N, optical data for 3+ stellar members in open clusters, using Keck/HIRES, with membership derived from the Open Cluster Chemical Abundances and Mapping (OCCAM) survey. From these new Keck/HIRES data, we have derived neutron capture abundances for stars in seven distant outer Galaxy open cluster