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Redman, M. P.,Dyson, J. E.
1999
Unknown
Monthly Notices Of The Royal Astronomical Society
Mass-loaded jet models of fast low-ionization features in planetary nebulae
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()
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302
We propose that the fast low-ionization features (FLIERS) observed in some planetary nebulae are recombination zones behind stationary supersonic recombination fronts produced in mass-loaded jets. The main physical characteristics can be reproduced by jets with opening angles of a few degrees and momentum fluxes of ~ 1028 g cm s-2, which mass-load from embedded clumps in the nebular envelope. Very simple considerations based on inferred clump masses imply that the nebular envelope contains ~ 600-60, 000 clumps. Although this range is wide, it is not incompatible with clump numbers estimated from observational data.We propose that the fast low-ionization features (FLIERS) observed in some planetary nebulae are recombination zones behind stationary supersonic recombination fronts produced in mass-loaded jets. The main physical characteristics can be reproduced by jets with opening angles of a few degrees and momentum fluxes of ~ 1028 g cm s-2, which mass-load from embedded clumps in the nebular envelope. Very simple considerations based on inferred clump masses imply that the nebular envelope contains ~ 600-60, 000 clumps. Although this range is wide, it is not incompatible with clump numbers estimated from observational data.
0035-87110035-8711
http://adsabs.harvard.edu/abs/1999MNRAS.302L..17Rhttp://adsabs.harvard.edu/abs/1999MNRAS.302L..17R
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