Abstract

We study the kinematical ages of six Galactic bulge planetary nebulae selected purely on their bi-lobed morphology. The ages are derived from pseudo-3D photoionization and kinematical models, using HST images and UVES spectra and assuming axial symmetry. The bi-lobed nebulae show similar kinematical ages (∼1500 yrs), despite of their different sizes, expansion velocities and stellar temperatures.

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