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Table B.2

Parameters of the triple system.

Light-curve fit of binary 1 mutual eclipses
period, P1 (d) 1.6278 ± 0.0001
epoch1, T1 (BKJD)2 2061.2610 ± 0.0012
inclination, i1 (deg) 88.9 ± 0.5
eccentricity, e1 ≲0.0015
relative star radius, RBa/a1 0.1834 ± 0.0012
radius ratio, k1 = RBb/RBa 1.008 ± 0.005
comp. Ba,Bb linear limb-dark. coeff., ua 0.78 ± 0.07
luminosity ratio, LBb/LBa 0.97 ± 0.05
Light-curve fit of binary 2 (eclipses with component A)
period, P2 (d) 33.945 ± 0.002
epoch3, T2 (BKJD) 2090.0680 ± 0.0010
inclination, i2 (deg) 89.28 ± 0.05
relative position angle5, ΔP.A. −1.0 ± 0.9
secondary eclipse phase4, φs,2 0.3950 ± 0.0005
eccentricity, e2 0.2652 ± 0.0003
arg. of periapsis6, ω2(deg) 127.63 ± 0.15
apsidial rotation velocity, (deg d-1) 0.0235 ± 0.002
epoch of periapsis, Tν,2(BKJD) 2092.31 ± 0.02
relative star radius, RA/a2 0.0364 ± 0.0005
comp. A limb-dark. coeff., u 0.37 ± 0.10
luminosity ratio, (LBa + LBb) /LA 0.0593 ± 0.0012
mass ratio q12 = (mBa + mBb) /mA 1.34 ± 0.03
mass ratio q1 = mBb/mBa 0.995 ± 0.015
Parameters from O–C and RV fit
amplitude of light travel time effect, ALTTE (s) 86.7 ± 0.1
amplitude of first order dynamical effects with P2 timescale, AL1 (s) 957 ± 8
amplitude of second order dynamical effects with P2 timescale, AL2 (s) 2.4 ± 0.9
mutual orbital inclination im (degrees) 0.2 ± 0.5
RV semi-amplitude KA (km s-1) 58.52 ± 0.05
RV semi-amplitude KBa + Bb (km s-1) 43.6 ± 0.6
RV semi-amplitude KBa (km s-1) 110.2 ± 1.2
RV semi-amplitude KBb (km s-1) 115.0 ± 0.6
RV offset, gamma (km s-1) −6.97 ± 0.10
mass ratio q12 = (mBa + mBb) /mA 1.342 ± 0.019
mass ratio q1 = (mBb/mBa) 0.959 ± 0.015
Adopted parameters
semimajor axis, aA (AU) 0.17619 ± 0.00012
semimajor axis, aBa + Bb (AU) 0.1313 ± 0.0018
semimajor axis, aBa (AU) 0.0165 ± 0.0002
semimajor axis, aBb (AU) 0.01721 ± 0.00009
semimajor axis, a1 (AU) 0.03371 ± 0.00011
semimajor axis, a2 (AU) 0.3075 ± 0.0013
mass component A, MA (M⊙) 1.44 ± 0.04
mass component Ba, MBa (M⊙) 0.984 ± 0.007
mass component Bb, MBb (M⊙) 0.944 ± 0.017
equatorial radius component A, RA (R⊙) 2.41 ± 0.03
radius component Ba, RBa (R⊙) 1.319 ± 0.010
radius component Bb, RBb (R⊙) 1.330 ± 0.010

Notes.

(1)

Epoch of the primary (deeper) eclipse, when component Ba is being occulted by Bb.

(2)

Barycentric Kepler Julian Date, BKJD = BJD − 2 454 833.

(3)

Epoch when component A would become eclipsed by the barycentre of the compact binary 1.

(4)

Orbital phase of component A when the barycentre of components Ba,Bb eclipses behind it.

(5)

Position angle of orbital plane of binary 2 relative to orbital plane of binary 1.

(6)

This value changes with time due to and is given for the moment of the epoch Tν,2.

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