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

Open Access

Fig. 17

Map of the relative kinematic distance error as a function of Galactic longitude and true distance. The contours are placed at 0, ±0.1, ±0.3, ±0.5, ±1, ±1.5, and ±2. The green lines indicate the spiral arms extracted with FILFINDER. Overplotted in orange are a selection of known sources for which we compute the true distance $d_{true}^{w}$ $d_{{\rm{true }}}^{\rm{w}}$ from the parallax measurements of Wenger et al. (2018).

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