Homogeneous search for helium in the atmosphere of 11 gas giant exoplanets with SPIRou

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Volume 677 (September 2023)

A&A, 677 (2023) A164

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Table 3

Continuation of Table 2 for the three remaining targets.

Parameters	Symbol [Unit]	WASP-80b	WASP-127b	HD189733b
Star

Stellar mass	M_* (M_⊙)	0.577 ± 0.054⁽²⁾	0.960 ± 0.023⁽³⁾	0.806 ± 0.048⁽⁵⁾
Stellar radius	R_* (R_⊙)	0.586 ± 0.018⁽²⁾	1.303 ± 0.037⁽³⁾	0.756 ± 0.018⁽⁵⁾
Stellar age	(Gyr)	<0.2⁽²⁾	9.656 ± 1.002⁽³⁾	6.8 ± 5.2⁽⁵⁾
Limb darkening coefficient	u₁	0.2146	0.1365	0.2248
Limb darkening coefficient	u₂	0.2830	0.2990	0.2795
Stellar metallicity	Fe/H (dex)	−0.13 ± 0.17⁽²⁾	−0.19 ± 0.01⁽³⁾	−0.03 ± 0.08⁽⁵⁾
Stellar temperature	T_eff (K)	4143 ± 94⁽²⁾	5842 ± 13⁽³⁾	5040 ± 50⁽⁵⁾
Surface gravity	log(g) (cgs)	4.663 ± 0.016⁽²⁾	4.23 ± 0.02⁽³⁾	4.587 ± 0.015⁽⁵⁾
Spectral type		K7V	G5	K2V

Planet

Planetary mass	M_p (M_⊕)	171 ± 11⁽²⁾	52.35 ± 6.8⁽⁴⁾	363.582 ± 18.116⁽⁵⁾
Planetary radius	R_p (R_⊕)	11.2 ± 0.335⁽²⁾	14.69 ± 0.33⁽⁴⁾	12.756 ± 0.303⁽⁵⁾
Density	ρ (cgs)	0.717 ± 0.039⁽²⁾	0.097 ± 0.013⁽⁴⁾	0.963 ± 0.088⁽⁵⁾
Equilibrium temperature	T_eq (K)	825 ± 19⁽²⁾	1400 ± 24⁽³⁾	1201 ± 13⁽⁵⁾
Orbital period	P (days)	3.06785271(19)⁽¹⁾	4.17806203(88)⁽⁴⁾	2.21857519(14)⁽¹⁾
Mid-transit time (−2 450 000)	T0 (days)	6671.49615(4)⁽¹⁾	6776.62124(28)⁽⁴⁾	4403.677711(25)⁽¹⁾
Transit duration	t₁₄ (h)	2.131 ± 0.003⁽²⁾	4.353 ± 0.014⁽⁴⁾	1.8036 ± 0.0023⁽⁶⁾
Semi-amplitude	K_* (m s⁻¹)	109.0 ± 4.4⁽²⁾	22 ± 3⁽³⁾	205 ± 6⁽⁵⁾
Semi-major axis	a (R_*)	12.63 ± 0.13⁽²⁾	7.81 ± 0.11⁽⁴⁾	8.81 ± 0.06⁽⁵⁾
Inclination	i (deg)	89.02 ± 0.1⁽²⁾	87.84 ± 0.36⁽⁴⁾	85.58 ± 0.06⁽⁵⁾
Impact parameter	b (R_⊙)	0.215 ± 0.022⁽²⁾	0.29 ± 0.045⁽⁴⁾	0.680 ± 0.005⁽⁵⁾
Eccentricity	e	0	0	0
Periastron argument	ω	90	90	90

References. ⁽¹⁾Kokori et al. (2022). ⁽²⁾Triaud et al. (2015). ⁽³⁾Allart et al. (2020). ⁽⁴⁾Seidel et al. (2020).⁽⁵⁾Torres et al. (2008). ⁽⁶⁾Baluev et al. (2015).

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