Measuring the orbit shrinkage rate of hot Jupiters due to tides

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Table 3

Best-fit results for our TTV analysis, with the linear constant period model and the quadratic model of orbital decay.

	Constant period
Target	T₀ (BJD)	P (days)
WASP-18	2458022.125226(16)	0.941452407(14)
WASP-19	2456021.703698(20)	0.788839004(13)

	Decay quadratic model
Target	T₀ (BJD)	P (days)	Ṗ	Ṗ upper limit	lower limit
WASP-18	2458022.125234(22)	0.941452400(20)	(−0.11 ± 0.21) × 10⁻¹⁰	<−0.45 × 10⁻¹⁰	>(1.42 ± 0.34) × 10⁷
WASP-19	2456021.703704(21)	0.788839038(25)	(−0.35 ± 0.22) × 10⁻¹⁰	<−0.71 × 10⁻¹⁰	>(1.26 ± 0.10) × 10⁶

Notes. We note that is given as a lower limit with a 95% confidence level with the corresponding upper limit of Ṗ.

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