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Circumstellar Ejecta Around LBV’s

  • O. Stahl
Part of the Astrophysics and Space Science Library book series (ASSL, volume 157)

Abstract

The properties of circumstellar shells around LBV’s are reviewed. Some LBV’s are surrounded by very extended nebulosities, similar to classical planetary nebulae, with AG Car as the prototype. The masses of these nebulae are of the order of a solar mass and their kinematic ages are about 104 years. The origin of these nebula is still controversial, but they probably have been ejected in some major outburst in the past. It is then remarkable that the historical outburst of P Cyg has left no bright remnant. There is evidence for CNO processed matter in the ejecta. LBV’s with no detectable extended emission also commonly have nebular emission lines. Some of these nebulae are probably related to the resolved nebulae, but some certainly are very much smaller and have much higher densities.

Keywords

Radial Profile Central Star Planetary Nebula Magellanic Cloud Circumstellar Disk 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • O. Stahl
    • 1
  1. 1.Landessternwarte KönigstuhlHeidelbergGermany

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