Abstract We compare different estimates of distances to planetary nebulae (PNe), namely, Gaia parallaxes and statistical values, in order to determine the most reliable distance for each PN. In numerous instances, we find that the distances derived from the Gaia parallaxes are not the most reliable, and that better estimates can be obtained from the median of the available statistical values. Our resulting distances imply that the distributions of distances from the Galactic plane of PNe with WR central stars is different from the distributions of both non-WR hydrogen-poor central stars and hydrogen-rich central stars.
Hernández-Juárez et al. (Fri,) studied this question.
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