Cloud property trends in hot and ultra-hot giant gas planets (WASP-43b, WASP-103b, WASP-121b, HAT-P-7b, and WASP-18b)

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Volume 649 (May 2021)

A&A, 649 (2021) A44

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Table 1

Physical parameters of the exoplanets, their host star and of the orbit.

Stellar parameters	WASP-103	WASP-18	WASP-121	HAT-P-7
T_eff (K)	6100 ± 100⁽⁴⁾	6400 ± 100⁽⁵⁾	6500 ± 100⁽¹⁾	6300 ± 100⁽²⁾
Mass (M_Sun)	1.220 ± 0.039⁽⁴⁾	1.25 ± 0.13⁽⁵⁾	1.353 ± 0.080⁽¹⁾	1.361 ± 0.021⁽²⁾
Radius (R_Sun)	1.436 ± 0.052⁽⁴⁾	1.216 ± 0.067⁽⁵⁾	1.458 ± 0.030⁽¹⁾	1.094 ± 0.01⁽²⁾
Spectral type	F8V	F6V	F6V	F8
Metallicity [Fe/H] (dex)	0.06 ± 0.13⁽⁴⁾	0.11 ± 0.08⁽⁵⁾	0.13 ± 0.09⁽¹⁾	0.26 ± 0.08⁽²⁾

Orbital parameters	WASP-103b	WASP-18b	WASP-121b	HAT-P-7b
Semi-major axis (AU)	0.01985 ± 0.00021⁽⁴⁾	0.020266 ± 0.00068⁽⁵⁾	0.02544 ± 0.00050⁽¹⁾	0.0379 ± 0.0004⁽³⁾
Orbital period (days)	0.92554 ± 0.000019⁽⁴⁾	0.94145 ± 0.00000134⁽⁶⁾	1.2749255 ± 0.00000025⁽¹⁾	2.20474⁽²⁾

Planetary parameters
T_eq (K)	2500 ± 100⁽⁴⁾	2400 ± 100⁽⁷⁾	2400 ± 100⁽¹⁾	2200 ± 100⁽²⁾
Mass (M_Jup)	1.49 ± 0.088⁽⁴⁾	10.30 ± 0.69⁽⁵⁾	1.183 ± 0.064⁽¹⁾	1.74 ± 0.03⁽²⁾
Radius (R_Jup]	1.528 ± 0.073⁽⁴⁾	1.106 ± 0.072⁽⁵⁾	1.807 ± 0.039⁽¹⁾	1.431 ± 0.011⁽²⁾
Density (g cm⁻³)	0.554 ± 0.056⁽¹⁰⁾	10.096 ± 1.324⁽¹⁰⁾	0.266 ± 0.017⁽¹⁰⁾	0.787 ± 0.017⁽¹⁰⁾
g (g_Jup)	0.638 ± 0.057⁽¹⁰⁾	8.420 ± 0.959⁽¹⁰⁾	0.362 ± 0.023⁽¹⁰⁾	0.850 ± 0.017⁽¹⁰⁾
log₁₀ (g cm s⁻²)	3.219 ± 2.172⁽¹⁰⁾	4.339 ± 3.395⁽¹⁰⁾	2.973 ± 1.767⁽¹⁰⁾	3.343 ± 1.652⁽¹⁰⁾

Stellar parameters	HD 209458	WASP-43	HD 189733	HD 86226
T_eff (K)	6100 ± 100⁽⁸⁾	4500 ± 100⁽⁹⁾	5000 ± 100⁽⁸⁾	5900 ± 100⁽¹¹⁾
Mass (M_Sun)	1.119 ± 0.033⁽⁸⁾	0.717 ± 0.025⁽⁹⁾	0.806 ± 0.048⁽⁸⁾	1.019 ± 0.066⁽¹¹⁾
Radius (R_Sun]	1.155 ± 0.016⁽⁸⁾	0.667 ± 0.01⁽⁹⁾	0.756 ± 0.018⁽⁸⁾	1.053 ± 0.026⁽¹¹⁾
Spectral type	G0V	K7V	K1.5V	G2V
Metallicity [Fe/H] (dex)	0.00 ± 0.05⁽⁸⁾	−0.01 ± 0.012⁹	-0.03 ± 0.08⁽⁸⁾	0.018 ± 0.057⁽¹¹⁾

Orbital parameters	HD 209458b	WASP-43b	HD 189733b	HD 86226c
Semi-major axis (AU)	0.04707 ± 0.00047⁽⁸⁾	0.01526 ± 0.00018⁽⁹⁾	0.03099 ± 0.00063⁽⁸⁾	0.049 ± 0.001⁽¹¹⁾
Orbital period (days)	3.524746⁽⁸⁾	0.81347753 ± 0.00000071⁽⁹⁾	2.218573⁽⁸⁾	3.98442 ± 0.00018⁽¹¹⁾

Planetary parameters
T_eq (K)	1500 ± 100⁽⁸⁾	1400 ± 100⁽⁹⁾	1200 ± 100⁽⁸⁾	1300 ± 100⁽¹¹⁾
Mass (M_Jup ]	0.685 ± 0.015⁽⁸⁾	2.034 ± 0.052⁽⁹⁾	1.144 ± 0.057⁽⁸⁾	7.25 ± 1.19⁽¹¹⁾ (M_E) or 0.023 M_Jup
Radius (R_Jup)	1.359 ± 0.019⁽⁸⁾	1.036 ± 0.019⁽⁹⁾	1.138 ± 0.027⁽⁸⁾	2.16 ± 0.08⁽¹¹⁾ (R_E) or 0.193 R_Jup
Density (g cm⁻³)	0.362 ± 0.012⁽¹⁰⁾	2.426 ± 0.100⁽¹⁰⁾	1.029 ± 0.066⁽¹⁰⁾	3.97 ± 0.78⁽¹¹⁾
g(g_Jup)	0.371 ± 0.017⁽¹⁰⁾	1.900 ± 0.069⁽¹⁰⁾	0.883 ± 0.053⁽¹⁰⁾	0.614 ± 0.106⁽¹⁰⁾
log₁₀ (g cm s⁻²)	2.983 ± 1.453⁽¹⁰⁾	3.691 ± 2.253⁽¹⁰⁾	3.360 ± 2.138⁽¹⁰⁾	3.202 ± 2.438⁽¹⁰⁾

Notes. The equilibrium temperature given in the literature have been rounded to the next 100 K as it in unrealistic to expect that it can be determined to a precision of 1 K or 10 K. Top: ultra-hot Jupiters. Bottom: hot giant gas planets and HD 86226c, a close-in sub-Neptune. Greyed planets are used for comparison only, black coloured planets are composing the gas giant sample studied here.

References: ⁽¹⁾ Delrez et al. (2016), ⁽²⁾ Van Eylen et al. (2012), ⁽³⁾ Pál (2009), ⁽⁴⁾ Gillon et al. (2014), ⁽⁵⁾ Hellier et al. (2009), ⁽⁶⁾ Pearson (2019), ⁽⁷⁾ Sheppard et al. (2017), ⁽⁸⁾ Torres et al. (2008), ⁽⁹⁾ Gillon et al. (2012), ⁽¹⁰⁾ this work (calculated using the referenced data), ⁽¹¹⁾Teske et al. (2020).

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