Reassessing the Evidence for Time Variability in the Atmosphere of the Exoplanet HAT-P-7 b
Maura Lally,
Andrew Vanderburg
Abstract:We reassess the claimed detection of variability in the atmosphere of the hot Jupiter HAT-P-7 b, reported by Armstrong et al. (2016). Although astronomers expect hot Jupiters to have changing atmospheres, variability is challenging to detect. We looked for time variation in the phase curves of HAT-P-7 b in Kepler data using similar methods to Armstrong et al. ( 2016), and identified apparently significant variations similar to what they found. Numerous tests show the variations to be mostly robust to different… Show more
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