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Table 11.

Free parameters of the three-body model of δ Ori.

Component Parameter Value Unit σ
Aa+Ab mtot 35.108 M 2.0
Aa1+Aa2 q1 0.4785 1 0.03
Aa+Ab q2 0.3338 1 0.03
Aa1+Aa2 P1 5.733121 d 0.000001
log e1 −1.089 1 0.01
i1 79.124 deg 1.0
Ω1 224.294 deg 1.0
ϖ1 43.451 deg 1.0
λ1 72.695 deg 1.0
Aa+Ab P2 55453 d 1000.0
log e2 −0.248 1 0.01
i2 105.170 deg 1.0
Ω2 122.735 deg 1.0
ϖ2 261.255 deg 1.0
λ2 133.391 deg 1.0
Aa1 T1 31385 K 1000
Aa2 T2 24515 K 1000
Ab T3 27906 K 1000
Aa1 log g1 3.452 cgs 0.1
Aa2 log g2 4.128 cgs 0.1
Ab log g3 3.220 cgs 0.1
Aa1 vrot1 114 km s−1 10
Aa2 vrot2 184 km s−1 100
Ab vrot3 279 km s−1 10
Aa1 C20 −9.2 × 10−4 1 0.1 × 10−4
z0 2.221 mag 0.01
γ 18.455 km s−1 1
dpc 382 (f) pc

NSKY 74
NRV 105
NETV 6
NECL 1
NLC 22136
NSYN 76794
NSED 31
N 147147
59
2991
82
10
13704
44795
17872
χ2 23739

Notes. The best-fit model has non-reduced χ2 = 23739. mtot denotes the total mass; q1 = m2/m1, q2 = m3/(m1 + m2) the respective mass ratios; P, osclulating period; e, eccentricity; i, inclination; Ω, longitude of node; ϖ, longitude of pericentre; λ, true longitude; T, effective temperature; g, gravitational acceleration; vrot, rotational velocity; C20, quadrupole moment; z0, magnitude zero point; γ, systemic velocity; and dpc, distance. (f)indicates the respective parameter was fixed. Orbital elements are osculating for the epoch T0 = 2458773.188651 (TDB).

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