DREAM - I. Orbital architecture orrery | Astronomy & Astrophysics (A&A)

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Volume 669 (January 2023)

A&A, 669 (2023) A63

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Table C.13

Properties of the WASP-156 system

Parameter	Symbol	Value	Unit	Origin
Stellar parameters

Spectral type		K3		Demangeon et al. (2018)
Stellar temperature	T_eff	4910±61	K	Demangeon et al. (2018)
Stellar radius	R_*	0.76 ± 0.03	R_⊙	Demangeon et al. (2018)
Stellar mass	M_*	0.842 ± 0.052	M_⊙	Demangeon et al. (2018)
Stellar spin inclination	i_*	—	deg	—
Stellar equatorial period	P_eq	—	d	—
Stellar projected velocity	v_eq sin i_*	${3.17}_{- 0.84}^{+ 0.73}$ $3.17_{ - 0.84}^{ + 0.73}$	km s−1	This work
Age	τ	6.4 ± 4.0	Gyr	Demangeon et al. (2018)
Limb-darkening coefficients	u₁	0.693		Exofast
	u₂	0.092

Planet b parameters

Orbital period	P	3.8361672 ± 0.0000019	d	This work (STELLA)
Transit epoch	T₀	2458644.30467 ± 0.00045	BJD_tdb	This work (STELLA)
Eccentricity	e	< 0.007		Demangeon et al. (2018)
Argument of periastron	ω	—	deg	Demangeon et al. (2018)
Stellar reflex velocity	K	19 ± 1	m s−1	Demangeon et al. (2018)
Scaled separation	a/R_*	${12.748}_{- 0.027}^{0.025}$ $12.748_{ - 0.027}^{0.025}$		Saha & Sengupta (2021)
Orbital inclination	i	${88.902}_{- 0.028}^{0.033}$ $88.902_{ - 0.028}^{0.033}$		Saha & Sengupta (2021)
Impact parameter	b	${0.2442}_{- 0.0073}^{+ 0.0061}$ $0.2442_{ - 0.0073}^{ + 0.0061}$		Saha & Sengupta (2021)
Transit duration	T₁₄	${2.3926}_{- 0.0055}^{+ 0049}$ $2.3926_{ - 0.0055}^{ + 0049}$		Saha & Sengupta (2021)
Planet-to-star radius ratio	R_p/R_*	${0.0685}_{- 0.0008}^{+ 0.0012}$ $0.0685_{ - 0.0008}^{ + 0.0012}$		Demangeon et al. (2018)
		${0.067654}_{- 0.000060}^{+ 0.000082}$ $0.067654_{ - 0.000060}^{ + 0.000082}$		Saha & Sengupta (2021)
Projected spin-orbit angle	λ	${105.7}_{- 14.4}^{+ 14.0}$ $105.7_{ - 14.4}^{ + 14.0}$	deg	This work

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