TOI-1259Ab: A warm Jupiter orbiting a K-dwarf white-dwarf binary on a low-obliquity orbit

Home

All issues

Volume 708 (April 2026)

A&A, 708 (2026) A272

Full HTML

Open Access

Table 1

Priors and resulting posteriors from the ironman joint fit of available TESS photometry, NEID RM effect RVs, and out-of-transit RVs from SOPHIE.

Parameter	Description	Prior	Posterior
λ	Sky-projected stellar obliquity (°)	𝒰(−180, 180)	$7_{- 21}^{+ 20}$ $Mathematical equation: $7_{ - 21}^{ + 20}$$
ψ	3D stellar obliquity (°)	…	$24_{- 12}^{+ 14}$ $Mathematical equation: $24_{ - 12}^{ + 14}$$
R_⋆	Stellar radius (R_⊙)	𝒩(0.711, 0.020)	0.715 ± 0.015
M_⋆	Stellar mass (M_⊙)	𝒩(0.74, 0.06)	${0.746}_{- 0.044}^{+ 0.048}$ $Mathematical equation: $0.746_{ - 0.044}^{ + 0.048}$$
P_rot,⋆	Stellar rotational period (days)	𝒩(28.0, 2.8)	26.7 ± 2.8
cos i_⋆	Cosine of stellar inclination	𝒰(−1, 1)	${0.04}_{- 0.32}^{+ 0.34}$ $Mathematical equation: $0.04_{ - 0.32}^{ + 0.34}$$
v_eq,⋆	Stellar equatorial velocity (km s⁻¹)	…	${1.37}_{- 0.13}^{+ 0.17}$ $Mathematical equation: $1.37_{ - 0.13}^{ + 0.17}$$
v sin i_⋆	Projected rotational velocity (km s⁻¹)	…	${1.28}_{- 0.14}^{+ 0.17}$ $Mathematical equation: $1.28_{ - 0.14}^{ + 0.17}$$
ρ_⋆	Stellar density (g cm⁻³)	…	${2.89}_{- 0.04}^{+ 0.03}$ $Mathematical equation: $2.89_{ - 0.04}^{ + 0.03}$$
i_⋆	Stellar inclination (°)	…	$92_{- 20}^{+ 19}$ $Mathematical equation: $92_{ - 20}^{ + 19}$$
R_p	Planet Radius (R_⊕)	…	11.6 ± 0.2
a	Semimajor axis (au)	…	0.0408 ± 0.0009
M_p	Planet mass (M_⊕)	…	141 ± 13
ρ_p	Planet density (g cm⁻³)	…	0.49 ± 0.04
P	Orbital Period (days)	𝒩(3.477978, 0.000002)	3.4779792 ± 0.0000001
t₀	Transit midpoint (BJD)	𝒩(2458686.7005, 0.0001)	2458686.70048 ± 0.00004
b	Impact parameter	𝒰(0, 1)	${0.10}_{- 0.07}^{+ 0.05}$ $Mathematical equation: $0.10_{ - 0.07}^{ + 0.05}$$
R_p/R_⋆	Radius ratio	𝒰(0, 1)	0.145 ± 0.004
e	Orbital eccentricity	Fixed	0
K	RV semiamplitude (m s⁻¹)	𝒰(0, 1000)	72 ± 6
a/R_⋆	Scaled semimajor axis	…	${12.27}_{- 0.06}^{+ 0.05}$ $Mathematical equation: $12.27_{ - 0.06}^{ + 0.05}$$
i	Orbital inclination (°)	…	${89.5}_{- 0.2}^{+ 0.3}$ $Mathematical equation: $89.5_{ - 0.2}^{ + 0.3}$$
$q_{1}^{TESS}$ $Mathematical equation: $q_1^{{\rm{TESS}}}$$	TESS linear limb-darkening parameter	𝒰(0, 1)	${0.41}_{- 0.04}^{+ 0.03}$ $Mathematical equation: $0.41_{ - 0.04}^{ + 0.03}$$
$q_{2}^{TESS}$ $Mathematical equation: $q_2^{{\rm{TESS}}}$$	TESS quadratic limb-darkening parameter	𝒰(0, 1)	${0.36}_{- 0.03}^{+ 0.03}$ $Mathematical equation: $0.36_{ - 0.03}^{ + 0.03}$$
σ_TESS	TESS photometric jitter (ppm)	ℒ𝒰(1, 5 × 10⁷)	${5.0}_{- 3.3}^{+ 9.2}$ $Mathematical equation: $5.0_{ - 3.3}^{ + 9.2}$$
γ_SOPHIE	SOPHIE RV offset (m s⁻¹)	𝒰(−41 000, −40 500)	−40 820 ± 4
σ_SOPHIE	SOPHIE RV jitter (m s⁻¹)	ℒ𝒰(10⁻³,100)	${0.5}_{- 0.5}^{+ 12.4}$ $Mathematical equation: $0.5_{ - 0.5}^{ + 12.4}$$
$q_{1}^{NEID}$ $Mathematical equation: $q_1^{{\rm{NEID}}}$$	NEID linear limb-darkening parameter	𝒰(0, 1)	${0.78}_{- 0.27}^{+ 0.16}$ $Mathematical equation: $0.78_{ - 0.27}^{ + 0.16}$$
$q_{2}^{NEID}$ $Mathematical equation: $q_2^{{\rm{NEID}}}$$	NEID quadratic limb-darkening parameter	𝒰(0, 1)	${0.66}_{- 0.35}^{+ 0.24}$ $Mathematical equation: $0.66_{ - 0.35}^{ + 0.24}$$
β_NEID	Intrinsic stellar line width (km s⁻¹)	𝒯𝒩(3.5, 2.0, 0.0, 10.0)	${0.61}_{- 0.37}^{+ 0.90}$ $Mathematical equation: $0.61_{ - 0.37}^{ + 0.90}$$
γ_NEID	NEID RV offset (m s⁻¹)	𝒰(−50, 50)	−2.5 ± 1.6
σ_NEID	NEID RV jitter (m s⁻¹)	ℒ𝒰(10⁻³, 100)	${0.08}_{- 0.08}^{+ 2.0}$ $Mathematical equation: $0.08_{ - 0.08}^{ + 2.0}$$
${\dot{γ}}_{NEII}$ $Mathematical equation: ${{\dot \gamma }_{{\rm{NEII}}}}$$	NEID RV slope (m s⁻¹ day⁻¹)	𝒰(−200, 200)	81 ± 31

Notes. (a, b) denotes a uniform distribution between a and b. 𝒩(µ, σ) denotes a Gaussian distribution with mean µ and standard deviation σ. 𝒯𝒩(µ, σ, a, b) denotes a truncated Gaussian distribution with mean µ and standard deviation σ, constrained between limits a and b. ℒ𝒰(a, b) denotes a log-uniform prior between a and b. The nested sampling jump parameters are the parameters shown with associated priors, and the remaining parameters are derived from those posteriors.

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.