Asymmetrical Post-main-sequence Nebulae 8 e2021: The Shaping of Stellar Outflows

The meeting is devoted to the shaping effects of stellar outflows from evolved stars in the formation of asymmetrical post-main-sequence nebulae including planetary nebulae, nebulae around massive stars, nova remnants, symbiotic stars, ... Three main topics will be covered: I. Nebular Architecture: morphologies and dynamics across stellar mass and wavelength. - Multi-wavelength properties of planetary nebulae and related nebulae, including nebulae around evolved massive stars, symbiotic stars, nova remnants, … - Morphological diversity and statistics. - Accreting and circumbinary disks: getting closer to the launching engine of collimated outflows and jets. II. Nebular Sequences: time-evolving morphologies and physical structures. - Nebular evolution from the ejection time to its dilution into the ISM. - Comparative studies between proto-PNe and PNe and between pre-explosion shells and post-explosion remnants in CVs and evolved massive stars. - Transient nebulae: born-again PNe, nova shells, and other eruptive objects and transients III. The Engine of the Nebular Shaping: mass-loss mechanisms and their effects on the winds symmetry. - Post-MS binary interactions: wide, close and interacting binaries, common envelopes, planets. - Magnetic fields: strength, structure, effects, statistics. - Mass-loss mechanisms: radiation pressure on dust, convection, rotation, non-radial pulsations. - Collateral effects on stellar evolution, planetary nebulae population, chemistry.