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Table 1
The average value of foreground stars Nfg and their fraction f found in the various complexes.
| Complex | Nfg | f | Area | Σfg | Distance |
| deg2 | deg-2 | pc | |||
|
|
|||||
| Orion A | 420 | 0.047 | 1.504 | 279 ± 13 | 371 ± 10 |
| Orion B | 298 | 0.030 | 0.936 | 318 ± 18 | 398 ± 12 |
| λ Orionis | 17 | 0.018 | 0.078 | 219 ± 53 | 445 ± 50 |
| Mon R2 | 207 | 0.157 | 0.144 | 1430 ± 99 | 905 ± 37 |
| Rosette | 275 | 0.190 | 0.083 | 3330 ± 200 | 1330 ± 48 |
| Canis Major | 99 | 0.228 | 0.036 | 2730 ± 270 | 1150 ± 64 |
Notes. Also reported in the last column the estimated distance from a comparison with the Robin et al. (2003) Galactic model (see Fig. 10).
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