ESPRESSO reveals blueshifted neutral iron emission lines on the dayside of WASP-76 b

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Volume 689 (September 2024)

A&A, 689 (2024) A8

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Table 1

Properties of the planet WASP-76 b and its stellar host.

Parameter	Symbol (unit)	Value	Reference
Star
Right ascension	RA	01 h 46 m 31.9 s	Gaia Collaboration (2020)
Declination	Dec	+02° 42′ 02.0″	Gaia Collaboration (2020)
V magnitude	V-mag (mag)	9.52 ± 0.03	Høg et al. (2000)
Spectral type		F7	West et al. (2016)
Effective temperature	T_eff (K)	6329 ± 65	Ehrenreich et al. (2020)
Radius	R_* (R_⊙)	1.458 ± 0.021	Ehrenreich et al. (2020)
Mass	M_* (M_⊙)	1.756 ± 0.071	Ehrenreich et al. (2020)
Gravity	log g	4.196 ± 0.106	Ehrenreich et al. (2020)
RV semi-amplitude	K_* (m s⁻¹)	${116.02}_{- 1.35}^{+ 1.29}$ $116.02_{ - 1.35}^{ + 1.29}$	Ehrenreich et al. (2020)
Systemic velocity	υ_sys (km s⁻¹)
Epoch I		−1.2113 ± 0.0003	This work
Epoch II		−1.2134 ± 0.0003	This work
Epoch III		−1.2064 ± 0.0002	This work
Epoch IV		−1.2100 ± 0.0003	This work

Planet
Radius	R_p (R_Jup)	${1.854}_{- 0.076}^{+ 0.077}$ $1.854_{ - 0.076}^{ + 0.077}$	Ehrenreich et al. (2020)
Mass	M_p (M_Jup)	${0.894}_{- 0.013}^{+ 0.014}$ $0.894_{ - 0.013}^{ + 0.014}$	Ehrenreich et al. (2020)
Planet surface gravity	g_p (m s⁻²)	6.4 ± 0.5	Ehrenreich et al. (2020)
Inclination	i (deg)	${89.623}_{- 0.013}^{+ 0.014}$ $89.623_{ - 0.013}^{ + 0.014}$	Ehrenreich et al. (2020)
Semi-major axis	a (AU)	0.0330 ± 0.0002	Ehrenreich et al. (2020)
Orbital period	P (days)	${1.80988198}_{0.00000056}^{+ 0.00000064}$ $1.80988198_{0.00000056}^{ + 0.00000064}$	Ehrenreich et al. (2020)
Mid-transit time	T_c (BJD)	${58080.626165}_{0.000367}^{+ 0.000418}$ $58080.626165_{0.000367}^{ + 0.000418}$	Ehrenreich et al. (2020)
RV semi-amplitude	K_p (km s⁻¹)	196.52 ± 0.94	Ehrenreich et al. (2020)
Equilibrium temperature	T_eq (K)	2228 ± 122	Ehrenreich et al. (2020)
Dayside temperature	T_day (K)	2693 ± 56	Garhart et al. (2020)

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