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arXiv · 2310.08953

Searching for Candidates of Orbital Decays among Transit Exoplanets

Li-Chin Yeh·Ing-Guey Jiang·Napaporn A-thano
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Abstract

Transit observations have become an important technique to probe exoplanets. Therefore, there are many projects carrying on organized observations of transit events, which make a huge amount of light-curve and transit timing data available. We consider this as an excellent opportunity to search for possible orbital decays of exoplanets from this big number of mid-transit times through data-model fitting with both fixed-orbit and orbit-decay models. In order to perform this task, we collect mid-transit-time data from several sources and construct the most complete database up to date. Among 144 hot Jupiters in our study, HAT-P-51b, HAT-P-53b, TrES-5b, WASP-12b are classified as the orbit-decay cases. Thus, in addition to reconfirming WASP-12b as an orbit-decay planet, our results indicate that HAT-P-51b, HAT-P-53b, TrES-5b are potential orbit-decay candidates.

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Li-Chin Yeh, Ing-Guey Jiang, Napaporn A-thano. 2023-10-13. Searching for Candidates of Orbital Decays among Transit Exoplanets. https://doi.org/10.1016/j.newast.2023.102130

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