Wolf 327b: A new member of the pack of ultra-short-period super-Earths around M dwarfs

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Table 4

Prior functions, fitted, and derived parameters of Wolf 327b.

Parameter	Prior	Value
Fitted transit and orbital parameters
ρ_* (g cm⁻³)	𝒩 (8.5, 1.08)	8.54 ± 0.30
R_p/R_*	𝒰 (0.0015, 0.10)	0.0280 ± 0.0007
T_c – 2457 000 (BJD)	𝒰 (2252.8167, 2253.1167)	2252.9811 ± 0.0003
P (days)	𝒰 (0.4734, 0.6734)	0.5734745 ± 0.0000003
b = a/R_* cos(i)	𝒰(0, 1)	0.47 ± 0.03
e		0 (fixed)
K_rv (m s⁻¹)	𝒰(0, 60)
γ₀ (m s⁻¹)	𝒰(−22.2, 27.8)
	𝒰(−100, 100)
σ_RV (m s⁻¹)	𝒰(0.01,12.0)
Derived orbital parameters
a/R_*		5.30 ± 0.06
i (deg)
Derived planet parameters
R_p (R_⊕)		1.24 ± 0.06
M_p (Μ_⊕)		2.53 ± 0.46
ρ_p (g cm⁻3)		7.24 ± 1.66
g_p (m s⁻²)		16.0 ± 3.3
a (au)		0.0100 ± 0.0004
〈F_p〉 (10³ W m⁻²)		318.3 ± 25.0
S_p (S_⊕)		233.9 ± 18.3
T_eq (A_Bond = 0.3) (K)		996 ± 22
Fitted LD coefficients
q₁ TESS	𝒰(0, 1)	0.271 ± 0.007
q₂ TESS	𝒰(0, 1)	0.260 ± 0.007
q_{1 g}	𝒰(0, 1)	0.598 ± 0.025
q_{2 g}	𝒰(0, 1)	0.309 ± 0.013
q_{1 r}	𝒰(0, 1)	0.605 ± 0.034
q_{1 r}	𝒰(0, 1)	0.276 ± 0.022
q_{2 i}	𝒰(0, 1)	0.344 ± 0.013
q_{1 z}	𝒰(0, 1)	0.258 ± 0.009
q_{2 z}	𝒰(0, 1)	0.223 ± 0.006
q_{2 z}	𝒰(0, 1)	0.254 ± 0.007
Derived LD coefficients
u₁ TESS		0.270 ± 0.005
u₂ TESS		0.250 ± 0.010
u_{1 g}		0.477 ± 0.013
u_{2 g}		0.296 ± 0.026
u_{1 r}		0.430 ± 0.025
u_{2 r}		0.349 ± 0.040
u_{1 i}		0.303 ± 0.007
u_{2 i}		0.284 ± 0.015
u_{1 z}		0.240 ± 0.004
u_{2 z}		0.233 ± 0.010

Notes. The fitted GP hyperparameters were left out on purpose for easy viewing. 𝒰, 𝒩 represent uniform and normal prior functions respectively. A_Bond is the Bond albedo. The term was computed relative to T_base = 2459966.0 BJD.

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