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Chemical Abundances in Magellanic Cloud Planetary Nebulae

  • D. J. Monk
  • M. J. Barlow
  • R. E. S. Clegg
Conference paper
Part of the International Astronomical Union / Union Astronomique Internationale book series (IAUS, volume 131)

Abstract

Optical spectroscopic data for 71 Planetary Nebulae (PN) in the Large and Small Magellanic Clouds have been analysed. The line fluxes have been used to determine nebular temperatures, densities, and the abundances of He, N, O, Ne and Ar, relative to H. In our sample there are 12 nebulae with N/0 ≧ 0.5, resembling Peimbert’s Type I PN; 6 low excitation (LE) objects (1 ≦ I(5007)/I(Hβ) ≦ 4); and 4 very-lowexcitation (VLE) nebulae (I(Hβ) > I(5007), similar to the Galactic VLE class. Mean abundances have been calculated for the nebulae not in these special groups.

Keywords

Line Flux Planetary Nebula Magellanic Cloud Chemical Abundance Collisional Excitation 
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.

Copyright information

© International Astronomical Union 1989

Authors and Affiliations

  • D. J. Monk
    • 1
  • M. J. Barlow
    • 1
  • R. E. S. Clegg
    • 1
  1. 1.Dept. of Physics and AstronomyUniversity College LondonUK

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