Open Access
Table 1
Spiral centroid parameters (cf. Eq. (2)) following Faucher-Giguère & Kaspi (2006).
| Spiral arm | k (rad) | R0 (kpc) | θ0 (rad) |
|---|---|---|---|
| Norma | 4.25 | 3.48 | 3.141 |
| Scutum-Centaurus | 4.89 | 4.90 | 2.525 |
| Sagittarius-Carina | 4.25 | 3.48 | 0.000 |
| Perseus/Local | 4.89 | 4.90 | 5.666 |
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