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

Home

All issues

Volume 669 (January 2023)

A&A, 669 (2023) A63

Full HTML

Press Release

Open Access

Table C.11

Properties of the WASP-47 system

Parameter	Symbol	Value	Unit	Origin
Stellar parameters

Spectral type		G9		Hellier et al. (2012)
Stellar temperature	T_eff	5552 ± 75	K	Vanderburg et al. (2017)
Stellar mass	M_*	1 .040 ± 0.031	M_⊙	Vanderburg et al. (2017)
Stellar radius	R_*	1.137 ± 0.013	R_⊙	Vanderburg et al. (2017)
Stellar spin inclination	i_*	${69.8}_{- 9.2}^{+ 11.0}$ $69.8_{ - 9.2}^{ + 11.0}$	deg	This work
Stellar equatorial period	P_eq	${39.4}_{- 4.5}^{+ 2.2}$ $39.4_{ - 4.5}^{ + 2.2}$	d	Bryant & Bayliss (2022)
Stellar projected velocity	v_eq sin i_*	${1.80}_{- 0.16}^{+ 0.24}$ $1.80_{ - 0.16}^{ + 0.24}$	km s⁻¹	Sanchis-Ojeda et al. (2015)
Age	τ	${6.5}_{- 1.2}^{+ 2.6}$ $6.5_{ - 1.2}^{ + 2.6}$	Gyr	Almenara et al. (2016)
Limb-darkening coefficients	u₁	0.540		Exofast
	u₂	0.209

Planet b parameters

Orbital period	P	4.1591492 ± 0.0000006	d	Bryant & Bayliss (2022)
Transit epoch	T₀	2457007.932103 ± 0.000019	BJD_tdb	Bryant & Bayliss (2022)
Eccentricity	e	0 (fixed)		Bryant & Bayliss (2022)
Argument of periastron	ω	90 (fixed)	^deg	Bryant & Bayliss (2022)
Stellar reflex velocity	K	140.84 ± 0.40	m s⁻¹	Bryant & Bayliss (2022)
Orbital inclination	i	${88.98}_{- 0.17}^{+ 0.20}$ $88.98_{ - 0.17}^{ + 0.20}$	deg	Bryant & Bayliss (2022)
Projected spin-orbit angle	λ	0 ± 24	deg	Sanchis-Ojeda et al. (2015)
3D spin-orbit angle	ψ_N	${28.8}_{- 13.3}^{+ 11.1}$ $28.8_{ - 13.3}^{ + 11.1}$	deg	This work
	ψ_S	${29.5}_{- 13.3}^{+ 11.0}$ $29.5_{ - 13.3}^{ + 11.0}$	deg
	ψ	${29.2}_{- 13.3}^{+ 11.1}$ $29.2_{ - 13.3}^{ + 11.1}$	deg

Planet c parameters

Orbital period	P	588.8 ± 2.0	d	Bryant & Bayliss (2022)
Inferior conjunction epoch	T₀	2457763.1 ± 4.3	BJD_tdb	Bryant & Bayliss (2022)
Eccentricity	e	0.295 ± 0.016		Bryant & Bayliss (2022)
Argument of periastron	ω	112.0 ± 4.3	^deg	Bryant & Bayliss (2022)
Stellar reflex velocity	K	31.04 ± 0.40	m s⁻¹	Bryant & Bayliss (2022)

Planet d parameters

Orbital period	P	9.03052118 ± 0.00000753	d	This work
Transit epoch	T₀	2459426.5437 ± 0.0028 ^t	BJD_TDB	This work
Eccentricity	e	${0.01}_{- 0.007}^{+ 0.011}$ $0.01_{ - 0.007}^{ + 0.011}$		Bryant & Bayliss (2022)
Argument of periastron	ω	${16.5}_{- 98.6}^{+ 84.2}$ $16.5_{ - 98.6}^{ + 84.2}$	^deg	Bryant & Bayliss (2022)
Stellar reflex velocity	K	4.26 ± 0.37	m s⁻¹	Bryant & Bayliss (2022)
Scaled separation	a/R_*	${16.34}_{- 0.11}^{+ 0.08}$ $16.34_{ - 0.11}^{ + 0.08}$		Bryant & Bayliss (2022)
Orbital inclination	i	${89.55}_{- 0.27}^{+ 0.30}$ $89.55_{ - 0.27}^{ + 0.30}$	deg	Bryant & Bayliss (2022)
Impact parameter	b	${0.128}_{- 0.085}^{+ 0.076}$ $0.128_{ - 0.085}^{ + 0.076}$		Bryant & Bayliss (2022)
Transit duration	T₁₄	4.288 ± 0.039	h	Vanderburg et al. (2017)
Planet-to-star radius ratio	R_p/R*	0.02876 ± 0.00017		Bryant & Bayliss (2022)
Projected spin-orbit angle	Nondetection	deg	This work

Planet e parameters

Orbital period	P	0.7895933 ± 0.0000044	d	Bryant & Bayliss (2022)
Transit epoch	T₀	2457011.34862 ± 0.00030	BJD^tdb	Bryant & Bayliss (2022)
Eccentricity	e	0 (fixed)		Bryant & Bayliss (2022)
Argument of periastron	ω	90 (fixed)	^deg	Bryant & Bayliss (2022)
Stellar reflex velocity	K	4.55 ± 0.37	m s⁻¹	Bryant & Bayliss (2022)
Transit duration	T₁₄	1.899 ± 0.013	h	Vanderburg et al. (2017)

^† We caution that WASP-47 d displays strong TTV with an amplitude of ~6 min. We report here the mid-transit time calculated with a TTV model at the specific epoch of our RM observations (see Sect. 5.11).

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.