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Paper: Searching for Jets in Asymmetrical Nebulae with the Hubble Space Telescope
Volume: 199, Asymmetrical Planetary Nebulae II: From Origins to Microstructures
Page: 383
Authors: Harrington, J. Patrick
Abstract: The jets seen in NGC 6543 motivated us to search for similar features in other PNe. We used our HST snapshot program to look for jets using the [N II] and Hα narrow-band filters. Although spectacular jets are found in proto-PNe, true jets seem rare among mature PNe. In the latter group, IC 4593 is the best case in our sample. We distinguish between jets and a number of interesting "jet-like" features, e.g., "cometary" structures with a dense globule at the end facing the central star.
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