Hostname: page-component-848d4c4894-sjtt6 Total loading time: 0 Render date: 2024-06-16T08:44:29.835Z Has data issue: false hasContentIssue false
  • English
  • Français

Radiatively Driven Winds and the Formation of Bipolar Planetary Nebulae

Published online by Cambridge University Press:  26 May 2016

Vikram V. Dwarkadas  and
Stanley Owocki
Vikram V. Dwarkadas
Affiliation:
Bartol Research Institute, Univ of Delaware, 217 Sharp Lab, Newark, DE 19716
Stanley Owocki
Affiliation:
Bartol Research Institute, Univ of Delaware, 217 Sharp Lab, Newark, DE 19716

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We study the role of radiatively driven winds in the formation of PNe. The modulation of these winds due to stellar rotation, and Von Zeipel gravity darkening, are both considered. Rotation produces a wind that is faster at the poles but denser at the equator. The Von Zeipel effect, which states that the stellar flux is proportional to the effective surface gravity, results in the inverse density distribution, giving a wind that is both faster and denser at the poles. Both these effects produce bipolar nebulae for large rotational velocities of the star.

Type
Part VII: Nebular Morphology and Dynamics
Information
Symposium - International Astronomical Union , Volume 209: Planetary Nebulae: Their Evolution and Role in the Universe , 2003 , pp. 467 - 470
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

Barnbaum, C., Morris, M., & Kahane, C. 1995, ApJ, 450, 862 CrossRefGoogle Scholar
Castor, J. I., Abbott, D. C., & Klein, R. I. 1975, ApJ, 195, 157 CrossRefGoogle Scholar
Dwarkadas, V. V., Chevalier, R. A., & Blondin, J. M. 1996, ApJ, 457, 773 CrossRefGoogle Scholar
Dwarkadas, V. V., & Owocki, S. 2002, to be submitted Google Scholar
Prank, A. 1999, NewAR, 43, 31 Google Scholar
Kahane, C., et al. 1996, A&A, 314, 871 Google Scholar
Livio, M. 1995, in “Asymmetrical Planetary Nebulae”, eds. Harpaz, A. & Soker, N., p. 51 Google Scholar
Mellema, G., & Frank, A. 1995, MNRAS, 273, 401 CrossRefGoogle Scholar
Owocki, S. P., Cranmer, S. R., & Gayley, K. G. 1998, ApSS, 260, 1490 Google Scholar
von Zeipel, H. 1924, MNRAS, 84, 684 CrossRefGoogle Scholar