Outflows from evolved stars with OASIS, NAOMI and GLAS

I discuss the potential of integral-field spectroscopy (IFS) with adaptive optics in the study of the outflows from evolved stars of different masses.With IFS, detailed 3-D spatio-kinematical models of the outflows can be built, providing excellent observational datasets to be confronted with the existing dynamical theories. In addition, if multi-epoch observations are able to resolve the apparent expansion of the nebulae in the plane of the sky, then their dynamics can be further constrained, and other basic quantities like the distance via the expansion parallax, can be determined. The kind of results that can be obtained are illustrated by recent HST and VLT observations of the ring nebula around the symbiotic nova He 2-147.Given the present capabilities of the OASIS integral-field spectrograph of the Isaac Newton Group of Telescopes (ING), classical novae ejecta are the most appealing targets for such kind of studies, provided that its AO system NAOMI is complemented with the forthcoming laser guide star system GLAS.IFS+AO is also a powerful technique to detect faint ionized nebulae around bright stars, like for instance the outflows from luminous blue variables.