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Table 1
Adopted spiral arms parameters.
| Parameter | Symbol | Value | Unit |
|
|
|||
| Number of arms | m | 2 | − |
| Pitch angle | i | −14° | − |
| Arm width | σ | 5.0 | kpc |
| Scale length |
|
2.7 | kpc |
| Spiral pattern speed | Ωp | 26 | km s-1 kpc-1 |
| Perturbation amplitude | ζ 0 | 630 | km2 s-2 kpc-1 |
| Reference radius | R i | 8 | kpc |
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