NIRPS detection of delayed atmospheric escape from the warm and misaligned Saturn-mass exoplanet WASP-69 b

Open Access

Table 1

Parameters of the WASP-69 system.

Parameter	Symbol (Unit)	Value	Reference
Stellar parameters
Apparent magnitude	m_v	9.87	Høg et al. (2000)
Luminosity	L_⋆ (L_⊙)	0.33	This work
Distance	d (pc)	50.3	Sousa et al. (2021)
Stellar age	Age (Gyr)	1–2.6	This work
Stellar mass	M_⋆ (M_⊙)	0.83 ± 0.05	This work
Stellar radius	R_⋆ (R_⊙)	0.801 ± 0.015	This work
Effective temperature	T_eff (K)	4792 ± 158	This work
Metallicity	[Fe/H] (dex)	0.35 ± 0.07	This work
Turbulent velocity	V_turb (km s⁻¹)	0.55 ± 0.008	This work
Surface gravity⁽¹⁾	log g_⋆ (cgs)	4.16 ± 0.037	This work
Surface gravity⁽²⁾	log g_⋆ (cgs)	4.57 ± 0.037	This work
Activity indicator	log $R_{H K}^{'}$ $\[\mathrm{R}_{\mathrm{HK}}^{\prime}\]$ (dex)	−4.597 ± 0.001	This work
Limb-darkening coefficient	u₁	0.2669	This work
Limb-darkening coefficient	u₂	0.2657	This work
Spin inclination	i_⋆ (deg)	${60.8}_{- 6.1}^{+ 5.0}$ $\[60.8_{-6.1}^{+5.0}\]$	This work
Equatorial rotation period	P_eq (days)	23.07 ± 0.16	Anderson et al. (2014)
Projected rotational velocity	vsini_⋆ (km s⁻¹)	1.54 ± 0.05	This work
Stellar RV semi-amplitude	K_⋆ (m s⁻¹)	38.1 ± 2.4	Anderson et al. (2014)
Planetary parameters
Planet mass	M_p (M_⊕)	82.58 ± 5.37	This work
Planet mass	M_p (M_Jup)	0.26 ± 0.02	This work
Planet radius	R_p (R_⊕)	11.21 ± 0.22	This work
Planet radius	R_p (R_Jup)	1.00 ± 0.02	This work
Equilibrium temperature⁽³⁾	T_eq (K)	971 ± 33	This work
Projected spin-orbit angle	λ (deg)	0.05 ± 1.10	This work
3D spin-orbit angle⁽⁴⁾	ψ (deg)	${29.2}_{- 5.0}^{+ 6.1}$ $\[29.2_{-5.0}^{+6.1}\]$	This work
Mid-transit time	T_c (BJD_TDB)	2455748.83428 ± 0.00013	This work
Orbital period	P (d)	3.86813881 ± 0.00000013	This work
Transit duration (t₁ to t₄)	t₁₄ (h)	2.1869 ± 0.0053	This work
Orbital semi-major axis	a (R_⋆)	12.17 ± 0.07	This work
Orbital semi-major axis	a (AU)	0.0453 ± 0.0008	This work
Orbit inclination	i_p (deg)	86.79 ± 0.04	This work
Eccentricity	e	0 (fixed)	This work
Periastron argument	ω	90 (fixed)	This work

Notes. ⁽¹⁾surface gravity from spectroscopy; ⁽²⁾surface gravity calibrated with Mortier et al. (2014) and adopted in the this study; ⁽³⁾assuming a null albedo; ⁽⁴⁾the 3D spin–orbit angle is combined over the two degenerate configurations for the stellar inclination (see text).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.