Searching for hot water world candidates with CHEOPS - Refining the radii and analysing the internal structures and atmospheric lifetimes of TOI-238 b and TOI-1685 b

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Volume 696 (April 2025)

A&A, 696 (2025) A28

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Table 3

Posterior distributions of the planetary parameters for TOI-238 b and TOI-1685 b. RV semi-amplitudes from Suárez Mascareño et al. (2024) and Burt et al. (2024), respectively.

Parameter	TOI-238 b	TOI-1685 b
Epoch, t₀ (BJD-2457000)	2460205.7524 ± 0.0011	2458816.22570 ± 0.00071
Period, P (d)	1.2730990 ± 0.0000016	0.66913923 ± 0.00000039
Radius ratio, R_p/R_s	0.01891 ± 0.00055	0.02818 ± 0.00086
Impact parameter, b	0.23 ± 0.12	0.31 ± 0.19
Semi-major axis, a (AU)	0.02120 ± 0.00038	0.01164 ± 0.00097
Semi-major axis over stellar radius, a/R_s	6.03 ± 0.11	5.41 ± 0.46
Transit duration, t₁₄ (h)	1.587 ± 0.047	0.904 ± 0.019
Radius, R_p (R_⊕)	1.559 ± 0.047	1.421 ± 0.060
Incident flux, S _p (kW m⁻²)	1025 ± 86	290 ± 75
Equilibrium temperature, T_eq (K)	1378 ± 30	1000 ± 59
Impact parameter, b	0.23 ± 0.12	0.31 ± 0.19

RV semi-amplitude, K (m s⁻¹)	2.36 ± 0.32	${3.76}_{- 0.38}^{+ 0.39}$ $\[3.76_{-0.38}^{+0.39}\]$
Mass M_p (M_⊕)	3.37 ± 0.49	${3.07}_{- 0.33}^{+ 0.34}$ $\[3.07_{-0.33}^{+0.34}\]$

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