Turbulence is ubiquitous in the ionized shells of Galactic planetary nebulae, with residual velocities transonic or slightly supersonic and larger in inner regions and [WR]-type central stars.
Confirmation of the link between central star binarity and extreme abundance discrepancy factors in planetary nebulae
2 Pith papers cite this work. Polarity classification is still indexing.
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The review identifies and discusses key unsolved problems in planetary nebulae such as 3D morphology, multipolar origins, dust distribution, binarity, and the abundance discrepancy, along with suggested future directions.
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Current Unsolved Problems in Planetary Nebulae Research
The review identifies and discusses key unsolved problems in planetary nebulae such as 3D morphology, multipolar origins, dust distribution, binarity, and the abundance discrepancy, along with suggested future directions.