Abstract Almost 80% of mature planetary nebulae (PNe) have non spherical symmetry. Small-scale torii, knots, filaments and jets, frequently of low-ionization, were found embedded in PNe large-scale structures. In particular, the presence of stellar jets has been investigated through morpho-kinematic studies of PNe, from narrow-band imagery and high-dispersion long-slit spectroscopic observations. However, the latter technique is limiting the understanding of the global 3D structure of the PNe. MEGARA – the optical IFU attached to the 10.4-m Gran Telescopio Canarias – provides the ideal data to study the 3D morpho-kinematic structure of PN, allowing to discover, young jets “hidden” in the nebula. The access to the early evolution and interaction of these jets with the nebular envelope give us the opportunity of elucidating the formation of the non-spherical morphologies observed in most nebulae. We will present the results obtained from the MEGARA, unveiling for the first time hidden jets embedded in the ionized nebular envelope of NGC 2392, HuBi 1, M 2-31, M 3-38.
Rechy-García et al. (2023) studied this question.