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Fig. 4

image

Illustration of our pulsation removal algorithm. Black is the observed combined signal, blue the pulsation component (modeled by an inclined sinusoidal signal), and red the exoplanet component (modeled by a Gaussian signal). Positive shearing of the spectra aligns the pulsations. Due to symmetry, an equal negative shearing estimates the exoplanet signal for the positive shearing. Subtraction of the estimated exoplanet and pulsation signal then reverse shearing boosts our exoplanet signal and suppresses pulsations.

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