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Complex Motions in Planetary Nebulae

Published online by Cambridge University Press:  07 August 2017

Vincent Icke
Vincent Icke*
Affiliation:
Sterrewacht Leiden, Postbus 9513, 2300 RA Leiden, The Netherlands

Extract

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I have made an extensive series of numerical simulations of aspherical PNs. This interacting-winds model consists of a point source of fast tenuous gas embedded in a flattened cloud of dense slow gas which is two-dimensional and cylindrically symmetric. I used a hydrocode specially designed to handle the extremely large gradients between the winds to second order accuracy. The outer shock shapes correspond very well to my analytic predictions. This shock may form cusps which compress the gas to form two rings on opposite sides of the equatorial plane.

Type
IV. Planetary Nebulae Connection: Evolution from the AGB
Information
Symposium - International Astronomical Union , Volume 155: Planetary Nebulae , 1993 , pp. 346
Copyright
Copyright © Kluwer 1993 

References

Balick, B., Preston, H.L., Icke, V.: 1987 Astron. J. 94, 1641 CrossRefGoogle Scholar
Icke, V.: 1987 Astron. Astrophys. 202, 177 Google Scholar
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Icke, V., Balick, B., Frank, A.: 1991 Astron. Astrophys. 253, 224 Google Scholar
Icke, V., Mellema, G., Balick, B., Eulderink, F., & Frank, A.: 1992 Nature 355, 524.Google Scholar
Icke, V., Preston, H.L., Balick, B.: 1989 Astron. J. 97, 462 Google Scholar
Mellema, G., Eulderink, F., Icke, V.: 1992 Astron. Astrophys. 252, 718 Google Scholar