Evolutionary Diagnostics of LBV Spectra and Systems in the LMC

  • Nolan R. Walborn
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 157)

Abstract

The characteristics of the Ofpe/WN9 class in the LMC, including two newly discovered members, are reviewed; a strong relationship between this class and the LBVs is established by HDE 269858 = Radcliffe 127, currently in outburst with a spectrum identical to that of S Doradus. The evidence for CNO-cycle products, i.e., enhanced N and He, on the surfaces and in the circumstellar nebulae of Ofpe/WN9 objects and LBVs is discussed, with emphasis on recent near-IR observations of He/H. Finally, the occurrence of several Ofpe/WN9 and LBV stars in compact multiple systems will enable valuable information about the evolutionary status of the peculiar objects to be derived. Strong threads unite these three topics: the same objects frequently recur in each.

Keywords

Magellanic Cloud Helium Abundance Large Magellanic Cloud Poster Paper Luminous Blue Variable 
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

  • Nolan R. Walborn
    • 1
  1. 1.Space Telescope Science InstituteBaltimoreUSA

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