Testing kinematic distances under a realistic Galactic potential - Investigating systematic errors in the kinematic distance method arising from a non-axisymmetric potential

Open Access

Table 3

Expansion used for each component of the potential.

Component	Expansion type
Sgr A*	`Multipole`
NSC	`Multipole`
NSD	`Multipole`
Bar	`CylSpline` (1)
Stellar disk	`CylSpline` (1)
Gas disk	`CylSpline` (1)
Spiral arms	`CylSpline` (2)
DM halo	`Multipole`

Notes. When present, spiral arms are represented by a separate CylSpline potential since they rotate with a different pattern speed than the bar.

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