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Radiation-Pressure Ejection of Planetary Nebulae in Asymptotic-Giant-Branch Stars

Published online by Cambridge University Press:  25 May 2016

A. V. Sweigart
A. V. Sweigart*
Affiliation:
NASA Goddard Space Flight Center, Code 681, Greenbelt, MD 20771, USA

Abstract

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We have investigated the possibility that radiation pressure might trigger planetary nebula (PN) ejection during helium-shell flashes in asymptotic-giant-branch (AGB) stars. We find that the outward flux at the base of the hydrogen envelope during a flash will reach the Eddington limit when the envelope mass Menv falls below a critical value that depends on the core mass MH and composition. These results may help to explain the helium-burning PN nuclei found in the Magellanic Clouds.

Type
Part 5. Stellar Populations and Surveys
Information
Symposium - International Astronomical Union , Volume 190: New Views of the Magellanic Clouds , 1999 , pp. 370 - 371
Copyright
Copyright © Astronomical Society of the Pacific 1999 

References

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