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The 3D velocity structure of the planetary nebula NGC 7009

Steffen, W.; Koning, N.; Espíndola, M. +1 more

In search for deviations from homologous expansion in planetary nebulae we present a 3D morphokinematical model of NGC 7009. The model has been constructed with Shape based on PV diagrams from the literature and HST images. We find that the data are consistent with a radial velocity field with increased gradient at high latitudes compared to the e…