Discovery of a cold giant planet and mass measurement of a hot super-Earth in the multi-planetary system WASP-132

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Volume 693 (January 2025)

A&A, 693 (2025) A144

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Table 3

WASP-132 planet parameters from juliet: median and 68% confidence interval.

Parameter		Prior distribution^(∗)	Value
Planet c
P	Period (days)	𝒩(1.0115, 0.001)	${1.01153624}_{- 0.00000086}^{+ 0.00000093}$ ${1.01153624_{ - 0.00000086}^{ + 0.00000093}}$
T₀	Time of transit center (BJD_TDB)	𝒩(2 458 597.576, 0.001)	$2 458 {597.57584}_{- 0.00067}^{+ 0.00068}$ ${2\,458\,597.57584_{ - 0.00067}^{ + 0.00068}}$
e	Eccentricity of the orbit	f ixed	0
K	Radial velocity semi-amplitude (m s⁻¹)	𝒩(4.60, 1.37)	${4.67}_{- 1.37}^{+ 1.37 (†)}$ ${4.67_{ - 1.37}^{ + 1.37}}$
ω	Argument of periastron (deg)	𝒰(0, 360)	$188_{- 113}^{+ 106}$ ${188_{ - 113}^{ + 106}}$
r₁	Parametrization for p and b	𝒰(0, 1)	${0.405}_{- 0.041}^{+ 0.041}$ ${0.405_{ - 0.041}^{ + 0.041}}$
r₂	Parametrization for p and b	𝒰(0, 1)	${0.02230}_{- 0.00065}^{+ 0.00060}$ ${0.02230_{ - 0.00065}^{ + 0.00060}}$
i	Inclination (deg)		${88.82}_{- 0.69}^{+ 0.67}$ ${88.82_{ - 0.69}^{ + 0.67}}$
P = R_p / R_*	Planet-to-star radius ratio		${0.02230}_{- 0.00065}^{+ 0.00060}$ ${0.02230_{ - 0.00065}^{ + 0.00060}}$
b	Impact parameter of the orbit		${0.107}_{- 0.061}^{+ 0.062}$ $0.107_{ - 0.061}^{ + 0.062}$
a	Semi-major axis (AU)		${0.01833}_{- 0.00079}^{+ 0.00079}$ ${0.01833_{ - 0.00079}^{ + 0.00079}}$
M_p	Planetary mass (M_⊕)		${6.26}_{- 1.83}^{+ 1.84}$ ${6.26_{ - 1.83}^{ + 1.84}}$
R_p	Planetary radius (R_⊕)		${1.841}_{- 0.093}^{+ 0.094}$ ${1.841_{ - 0.093}^{ + 0.094}}$
ρ_p	Planetary density (g cm^–3)		${5.47}_{- 1.71}^{+ 1.96}$ ${5.47_{ - 1.71}^{ + 1.96}}$
S	Insolation (S_⊕)		$791_{- 64}^{+ 72}$ ${791_{ - 64}^{ + 72}}$
T_eq	Equilibrium Temperature (K)		$1329_{- 173}^{+ 123}$ ${1329_{ - 173}^{ + 123}}$
T_dur	Total Transit Duration (hours)		${1.491}_{- 0.016}^{+ 0.016}$ ${1.491_{ - 0.016}^{ + 0.016}}$
Planet b
P	Period (days)	𝒰(7.1335±0.1)	${7.1335164}_{- 0.0000019}^{+ 0.0000019}$ ${7.1335164_{ - 0.0000019}^{ + 0.0000019}}$
T₀	Time of transit center (BJD_TDB)	𝒰(2 459 337.6±0.2)	$2 459 {337.60808}_{- 0.00016}^{+ 0.00014}$ ${2\,459\,337.60808_{ - 0.00016}^{ + 0.00014}}$
e	Eccentricity of the orbit	ℬ(0.867, 3.03)	${0.0163}_{- 0.0069}^{+ 0.0067}$ ${0.0163_{ - 0.0069}^{ + 0.0067}}$
K	Radial velocity semi-amplitude (m s⁻¹)	𝒰(0, 1000)	${52.99}_{- 0.74}^{+ 0.75}$ ${52.99_{ - 0.74}^{ + 0.75}}$
ω	Argument of periastron (deg)	𝒰(0, 360)	$318_{- 298}^{+ 31}$ ${318_{ - 298}^{ + 31}}$
r₁	Parametrization for p and b	𝒰(0, 1)	${0.4535}_{- 0.0281}^{+ 0.0250}$ ${0.4535_{ - 0.0281}^{ + 0.0250}}$
r₂	Parametrization for p and b	𝒰(0, 1)	${0.12219}_{- 0.00052}^{+ 0.00060}$ ${0.12219_{ - 0.00052}^{ + 0.00060}}$
i	Inclination (deg)		${89.46}_{- 0.11}^{+ 0.13}$ ${89.46_{ - 0.11}^{ + 0.13}}$
p = R_p / R_*	Planet-to-star radius ratio		${0.12219}_{- 0.00052}^{+ 0.00050}$ ${0.12219_{ - 0.00052}^{ + 0.00050}}$
b	Impact parameter of the orbit		${0.180}_{- 0.042}^{+ 0.037}$ ${0.180_{ - 0.042}^{ + 0.037}}$
a	Semi-major axis (AU)		${0.0674}_{- 0.0029}^{+ 0.0029}$ ${0.0674_{ - 0.0029}^{ + 0.0029}}$
M_p	Planetary mass (M_Jup)		${0.428}_{- 0.015}^{+ 0.015}$ ${0.428_{ - 0.015}^{ + 0.015}}$
R_p	Planetary radius (R_Jup)		${0.901}_{- 0.038}^{+ 0.038}$ ${0.901_{ - 0.038}^{ + 0.038}}$
ρ_p	Planetary density (g cm^–3)		${0.73}_{- 0.09}^{+ 0.10}$ ${0.73_{ - 0.09}^{ + 0.10}}$
S	Insolation (S_⊕)		${58.5}_{- 4.7}^{+ 5.3}$ ${58.5_{ - 4.7}^{ + 5.3}}$
T_eq	Equilibrium Temperature (K)		$682_{- 114}^{+ 55}$ ${682_{ - 114}^{ + 55}}$
T_dur	Total Transit Duration (hours)		${11.04}_{- 0.18}^{+ 0.18}$ ${11.04_{ - 0.18}^{ + 0.18}}$
Planet d
P	Period (days)	𝒩 (1812, 44)	${1816.6}_{- 44.4}^{+ 44.4 (†)}$ ${1816.6_{ - 44.4}^{ + 44.4(\dag \,)}}$
T₀	Time of inferior conjunction (BJD_TDB)	𝒩(2 455 059.5, 95)	$2 455 {051.5}_{- 95.0}^{+ 95.0 (†)}$ ${2\,455\,051.5_{ - 95.0}^{ + 95.0(\dag )}}$
e	Eccentricity of the orbit	𝒩(0.1, 0.08)	${0.120}_{- 0.078}^{+ 0.078 (†)}$ ${0.120_{ - 0.078}^{ + 0.078(\dag )}}$
K	Radial velocity semi-amplitude (m s^–1)	𝒩(104, 9.6)	${101.81}_{- 9.60}^{+ 9.60 (†)}$ ${101.81_{ - 9.60}^{ + 9.60(\dag )}}$
ω	Argument of periastron (deg)	𝒩 (135, 40)	$131_{- 40}^{+ 40 (†)}$ ${131_{ - 40}^{ + 40(\dag )}}$
a	Semi-major axis (AU)		${2.71}_{- 0.12}^{+ 0.12}$ ${2.71_{ - 0.12}^{ + 0.12}}$
M_p sini	Planetary mass × sine inclination (M_Jup)		${5.16}_{- 0.52}^{+ 0.52}$ ${5.16_{ - 0.52}^{ + 0.52}}$
S	Insolation (S_⊕)		${0.0363}_{- 0.0030}^{+ 0.0034}$ ${0.0363_{ - 0.0030}^{ + 0.0034}}$
T_eq	Equilibrium Temperature (K)		$107_{- 18}^{+ 11}$ ${107_{ - 18}^{ + 11}}$

Notes. ^(∗)𝒰(a, b) indicates a uniform distribution between a and b; ℑ(a, b) a Jeffrey or log-uniform distribution between a and b; N(a, b) a normal distribution with mean a and standard deviation b; and B(a, b) a Beta prior as detailed in Kipping (2014). Parameters with no prior distribution were derived. We sample from a normal distribution for the stellar mass, stellar radius, and stellar temperature, that are based on the results from Sect. 3.1 to derive parameters.^(†) Uncertainties account for the priors set from the initial RV fit.

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