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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