Image Details
Caption: Figure 10.
PSDs of the RVs taken on each of the two long-observation nights. The light orange and light blue lines represent the original PSDs, while the darker lines are the smoothed. The green solid lines represent the PSDs of the best-fit GP model (same model as in Figures 8 and 9), while the dashed lines are for the model components (granulation, oscillation, and white noise). The PSDs validate the goodness of-fit for the GP models in the frequency domain since the GP regression was only done in the time domain (Figure 9). See Section 4.4 for more details.
© 2026. The Author(s). Published by the American Astronomical Society.