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arXiv · 2510.13014

Beyond OCCAM: Measuring Optical Neutron Capture Abundances of Open Cluster Stars

Natalie Myers·Sarah Loebman·Henrique Reggiani·Peter Frinchaboy
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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

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Natalie Myers, Sarah Loebman, Henrique Reggiani, Peter Frinchaboy. 2025-10-14. Beyond OCCAM: Measuring Optical Neutron Capture Abundances of Open Cluster Stars. https://arxiv.org/abs/2510.13014

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