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| Paper: |
Multiple, Coeval and Hubble-Like Bipolar Outflows |
| Volume: |
313, Asymmetrical Planetary Nebulae III |
| Page: |
148 |
| Authors: |
Corradi, R.L.M. |
| Abstract: |
Multiple pairs of lobes are not often found in evolved planetary nebulae (PNe), contrary to what observed in proto-PNe. I review our current knowledge about the frequency and kinematical properties of this kind of multiple collimated outflows, which might be related to misclassified objects like symbiotic stars. In addition, I show that most bipolar PNe show rather simple velocity fields that can be described by a "Hubble law" (Vexp ∝ r), indicating that the nebulae have reached their asymptotic shape, and that the shaping is done in relatively short timescales. |
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