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Table 1

Observability of favorable Hot Jupiters for atmospheric retrieval studies with ground-based high resolution spectroscopy.

Name d Rs Rp Ts Tp V m star Km star FpFs texp Visible from ESO?
(a.u.) (R) (RJ) (K) (K) (mag) (mag) (h) (Yes/No)
(R = 100 k/50 k)
51 Peg b 0.052 1.27 1.90 5800 1370 5.46 3.91 1e-3 6/5 Yes
HD 46375 b 0.041 1.00 1.02 5200 1229 7.84 6.00 4e-4 71/61 Yes
HD 73256 b 0.037 1.22 1.00 (a) 5636 1545 8.06 6.26 4e-4 91/79 Yes
HD 75289 b 0.046 1.25 1.03 6120 1527 6.36 5.06 4e-4 29/26 Yes
HD 143105 b 0.038 1.23 1.00 (a) 6380 1739 6.75 5.52 5e-4 27/23 No
HD 179949 b 0.045 1.19 1.05 6260 1541 6.24 4.94 4e-4 26/23 Yes
HD 187123 b 0.043 1.17 1.00 (a) 5714 1433 7.83 6.34 4e-4 98/85 No (too low)
HD 189733 b 0.031 0.81 1.14 4880 1185 7.65 5.54 7e-4 78/68 Yes
HD 209458 b 0.048 1.20 1.38 6100 1467 7.63 6.31 7e-4 95/83 Yes
HD 212301 b 0.036 1.25 1.07 6000 1692 7.76 6e-4 37/32 No (too low)
HD 217107 b 0.073 1.08 1.00 (a) 5666 1043 6.16 4.54 2e-4 67/58 No
KELT-20 b 0.054 1.56 1.74 8981 2307 7.58 7.42 1e-3 43/37 No (too low)
τ Boo b 0.046 1.33 1.06 6300 1624 4.49 3.36 4e-4 10/9 Yes
υ And b 0.059 1.63 1.00 (a) 6200 1560 4.10 2.86 2e-4 14/12 No (too low)
WASP-18 b 0.021 1.23 1.17 6400 2374 9.30 8.13 2e-3 22/19 Yes
WASP-33 b 0.026 1.44 1.60 7400 2661 8.14 7.47 2e-3 13/11 No (too low)
WASP-76 b 0.033 1.73 1.83 6250 2166 9.52 8.24 2e-3 25/21 Yes

Notes. For each target the table lists its name, distance to the parent star, radii of the star and the planet, stellar effective temperature, planetary equilibrium temperature, stellar magnitudes in V and K bands, mean planet-to-star flux ratio ⟨FpFs⟩ calculated between 1 and 5 μm, and exposure time needed to reach an SN = 5 for the finally obtained exoplanet spectrum using single CRIRES+ setting. The exposure times are given separately for spectral resolutions R = 100 k and R = 50 k, respectively. The last column contains a flag for the observability of the star at the ESO Paranal observatory (Chile). The two primary targets for CRIRES+ are marked with bold. (a)We assumed Rp = 1.0 RJ due to the lack of information.

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