Exomoon search with VLTI/GRAVITY around the substellar companion HD 206893 B

Open Access

Table 2

Orbital fit of the B and c components in the HD 206893 system.

Quantity	Prior	Posterior
a_B (au)	LogUniform(1, 100)	10.75 ± 0.08
e_B	Uniform(0, 1)	${0.069}_{- 0.012}^{+ 0.011}$ $\[0.069_{-0.012}^{+0.011}\]$
i_B (°)	sin(i)	${142.0}_{- 0.5}^{+ 0.4}$ $\[142.0_{-0.5}^{+0.4}\]$
ω_B (°)	Uniform(0, 2π)	$102_{- 5}^{+ 7}$ $\[102_{-5}^{+7}\]$
Ω_B (°)	Uniform(0, 2π)	${63.8}_{- 0.6}^{+ 0.5}$ $\[63.8_{-0.6}^{+0.5}\]$
τ_B	Uniform(0, 1)	${0.133}_{- 0.013}^{+ 0.020}$ $\[0.133_{-0.013}^{+0.020}\]$

a_c (au)	LogUniform(1, 100)	${3.74}_{- 0.03}^{+ 0.02}$ $\[3.74_{-0.03}^{+0.02}\]$
e_c	Uniform(0, 1)	${0.283}_{- 0.017}^{+ 0.019}$ $\[0.283_{-0.017}^{+0.019}\]$
i_c (°)	sin(i)	${142.5}_{- 0.8}^{+ 0.9}$ $\[142.5_{-0.8}^{+0.9}\]$
ω_c (°)	Uniform(0, 2π)	27 ± 5
Ω_c (°)	Uniform(0, 2π)	${65.4}_{- 3.5}^{+ 3.6}$ $\[65.4_{-3.5}^{+3.6}\]$
τ_c	Uniform(0, 1)	${0.694}_{- 0.010}^{+ 0.009}$ $\[0.694_{-0.010}^{+0.009}\]$

Parallax (mas)	𝒩(24.5275, 0.0354)	${24.5252}_{- 0.0347}^{+ 0.0350}$ $\[24.5252_{-0.0347}^{+0.0350}\]$
γ_RV (m/s)	Uniform(−5000, 5000)	$146_{- 7}^{+ 8}$ $\[146_{-7}^{+8}\]$
σ_RV (m/s)	LogUniform(0.1, 100)	$43_{- 3}^{+ 4}$ $\[43_{-3}^{+4}\]$
M_B (M_Jup)	Uniform(1, 50)	${19.5}_{- 1.3}^{+ 1.4}$ $\[19.5_{-1.3}^{+1.4}\]$
M_c (M_Jup)	Uniform(1, 50)	${11.1}_{- 0.5}^{+ 0.4}$ $\[11.1_{-0.5}^{+0.4}\]$
M_* (M_⊙)	𝒩(1.29, 0.10)	${1.31}_{- 0.02}^{+ 0.03}$ $\[1.31_{-0.02}^{+0.03}\]$

Derived Parameters

P_B (yr)	−	${30.5}_{- 0.7}^{+ 0.6}$ $\[30.5_{-0.7}^{+0.6}\]$
P_c (yr)	−	${6.28}_{- 0.07}^{+ 0.08}$ $\[6.28_{-0.07}^{+0.08}\]$
Mutual Inc. (°)	−	${1.8}_{- 0.7}^{+ 1.5}$ $\[1.8_{-0.7}^{+1.5}\]$

Notes. Orbital parameters in Jacobi coordinates. a, e, i, ω, Ω, and τ are the semimajor axis, eccentricity, inclination, argument of periapsis, longitude of ascending node, and the relative epoch of periastron, respectively. They are shown for the B and c components with associated subscripts. Then we list the parallax, the stellar RV offset (γ_RV), the stellar RV jitter (σ_RV), the mass of the B and c components, and that of the star. We finish with the orbital periods of the B and c components and their mutual inclinations.

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.