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A study of the effect of ionization and illumination on morphologies of planetary nebulae

Published online by Cambridge University Press:  30 August 2012

Yong Zhang ,
Sun Kwok  and
Chung-Ming Ko
Yong Zhang
Affiliation:
Department of Physics, The University of Hong Kong, Hong Kong, China email: zhangy96@hku.hk
Sun Kwok
Affiliation:
Department of Physics, The University of Hong Kong, Hong Kong, China email: zhangy96@hku.hk
Chung-Ming Ko
Affiliation:
Department of Physics, The University of Hong Kong, Hong Kong, China email: zhangy96@hku.hk Institute of Astronomy, Department of Physics and Center for Complex Systems, National Central University, Taiwan
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Abstract

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We carry out a modelling study of the effect of ionization and illumination on the morphologies of planetary nebulae (PNs), aiming to investigate the hypothesis of Kwok (2010) that the bipolar and multipolar lobes of PNs can be produced by leakage of UV photons into those directions. Using photoinization code, we construct a series of nebular models consisting of a dense envelope and cones of low density. The results show that the visible morphologies of PNs may be fundamentally different from their intrinsic structures.

Keywords

planetary nebulae: generalcircumstellar matter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S283: Planetary Nebulae: An Eye to the Future , July 2011 , pp. 530 - 531
Copyright
Copyright © International Astronomical Union 2012

References

Balick, B. & Frank, A. 2002, ARA&A, 40, 439 Google Scholar
Ferland, G. J., et al. 1998, PASP, 110, 761 CrossRefGoogle Scholar
Kwok, S. 2010, PASA, 27, 174 CrossRefGoogle Scholar