Phase curves from space: The legacy of Kepler

The characterization of exoplanet atmospheres is a research field in fast expansion, and the study of planetary phase curves is a very promising tool to accomplish this objective. Phase curve studies are only possible with space telescopes, and it is of high interest to put constraints to the capabilities of next generation of space missions (CHEOPS, TESS and PLATO), specially in the presence of stellar activity In this work we use the data legacy of Kepler to study the detectability of phase curves in the Kepler sample, and try to give a first estimation about the amplitude of the phase curve / host star combination that would constitute the best targets for space missions. We select and study a sample of host stars with different properties in the Kepler catalog, and perform phase-curve injection and recovery studies, in order to evaluate the intrinsic limitations of the technique driven by the properties of the photometric stellar variability.

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