Sub-arcsecond Morphology of Planetary Nebulae

Details Sub-arcsecond Morphology of Planetary Nebulae Sub-arcsecond Morphology of Planetary Nebulae

2010-02-17

arxiv.org/abs/1002.3249v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

7 pages, 7 figures, Accepted for publication in PASA

Scientific paper

Planetary nebulae (PNe) can be roughly categorized into several broad morphological classes. The high quality images of PNe acquired in recent years, however, have revealed a wealth of fine structures that preclude simplistic models for their formation. Here we present narrow-band, sub-arcsecond images of a sample of relatively large PNe that illustrate the complexity and variety of small-scale structures. This is especially true for bipolar PNe, for which the images reveal multi-polar ejections and, in some cases, suggest turbulent gas motions. Our images also reveal the presence or signs of jet-like outflows in several objects in which this kind of component has not been previously reported.

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