A TESS transit-timing survey of 54 hot Jupiter systems finds 8 candidates with orbital decay at three-sigma significance and derives lower limits on the stellar tidal quality factor Q*'.
New transit observations for HAT-P-30 b, HAT-P-37 b, TrES-5 b, WASP-28 b, WASP-36 b, and WASP-39 b
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abstract
We present new transit light curves for planets in six extrasolar planetary systems. They were acquired with 0.4-2.2 m telescopes located in west Asia, Europe, and South America. When combined with literature data, they allowed us to redetermine system parameters in a homogeneous way. Our results for individual systems are in agreement with values reported in previous studies. We refined transit ephemerides and reduced uncertainties of orbital periods by a factor between 2 and 7. No sign of any variations in transit times was detected for the planets studied.
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In Search of Decay: An Analysis of Transit Times of Hot Jupiters in Main Sequence and Post-Main Sequence Systems
A TESS transit-timing survey of 54 hot Jupiter systems finds 8 candidates with orbital decay at three-sigma significance and derives lower limits on the stellar tidal quality factor Q*'.