Image Details
Caption: Figure 12.
The stellar activity index S ph vs. rotation-based age for 1023 stars in our Gold sample with periods greater than 10 days, plotted over the Kepler sample of Santos et al. (2019, 2021) and Mathur et al. (2023). Photometric activity decreases as stars age, an effect of spin-down seen in the Kepler field and predicted by theory.
© 2024. The Author(s). Published by the American Astronomical Society.