Table 2
Parameters of the planar fiducial non-axisymmetric potential fit in Sect. 4.2.
| Bar | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ωb | φb,0 | Rb,max | Kb,2 | Kb,4 | Kb,6 | a2 | a4 | a6 | b2 | b4 | b6 |
| 37 km s−1 kpc−1 | 28° | 12 kpc | 0.25 | 8.4 | 210.41 | 1.8 | 4.08 | 5.96 | 5.08 | 10.7 | 16.06 |
| m = 2 spiral | |||||||||||
| Ωs,2 | Ks,2 | φs,2 | ps,2 | Rs,2,min | Rs,2,max | hs,2 | Σs,2 | ILR | CR | ||
| 13.1 km s−1 kpc−1 | 0.15 % | 47.8 ° | 8.1 ° | 6.6 kpc | 26.4 kpc | 0.13 kpc | 24.9 % | 4.1 kpc | 17.6 kpc | ||
| m = 3 spiral | |||||||||||
| Ωs,3 | Ks,3 | φΜ | ps,3 | Rs,3,min | Rs,3,max | hs,3 | Σs,3 | ILR | CR | ||
| 16.4 km s−1 kpc−1 | 0.06 % | 81.7 ° | 13.7 ° | 8.0 kpc | 19.6 kpc | 0.13 kpc | 9.3 % | 8.0 kpc | 14.4 kpc | ||
Notes. The parameters are defined in Eqs. (7) and (9). The surface density contrasts at the solar radius, ΣS, were computed from the integrated 3D density equation for spiral arms in Cox & Gomez (2002) over the baryonic surface density of the background.
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