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astronomy instrumentation 1exoplanet biosignatures 1habitable worlds observatory 1high-contrast imaging 1ultraviolet spectroscopy 1

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20242026
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astro-ph.SR2026

Improving the Physical Interpretability of Gaussian Processes in Stellar Activity Modeling: A Study Case on Photometric Variability Among Stellar Clusters

Leslie Moranta, Jonathan Gagné, Jacqueline K. Faherty +12

Gaussian Processes (GPs) are widely used to model stellar variability in photometric surveys, but a statistically successful fit does not guarantee that the inferred hyperparameter…