Wide binary tests find Xiang & Rix (2022) subgiant age errors are consistent with reported values, while Nataf et al. (2024) photometric subgiant errors are underestimated by ~2–3×.
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How precisely can we measure the ages of subgiant and giant stars?
Wide binary tests find Xiang & Rix (2022) subgiant age errors are consistent with reported values, while Nataf et al. (2024) photometric subgiant errors are underestimated by ~2–3×.