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Fig. 8

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Stellar tidal quality factor as a function of stellar age for HATS-2 and an ensemble of host stars. These stars were selected considering systems where tidal decay has been observed or is a possible explanation for the observed TTVs (Hagey et al. 2022; Rosário et al. 2022; Wong et al. 2022; Mancini et al. 2022b; Barros et al. 2022).

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