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Ring Nebulae Abundances: Probes of the Evolutionary History of Luminous Blue Variable Stars*

Published online by Cambridge University Press:  12 April 2016

Linda J. Smith ,
Antonella Nota ,
Anna Pasquali ,
Claus Leitherer ,
Mark Clampin  and
Paul A. Crowther
Linda J. Smith
Affiliation:
Dept. of Physics and Astronomy, UCL, Gower St., London WC1E 6BT, UK
Antonella Nota
Affiliation:
STScI, 3700 San Martin Drive, Baltimore, MD 21218, USA
Anna Pasquali
Affiliation:
ST-ECF/ESO, Karl Schwarzschild Str. 2, D-85748 Garching, Munich, Germany
Claus Leitherer
Affiliation:
STScI, 3700 San Martin Drive, Baltimore, MD 21218, USA
Mark Clampin
Affiliation:
STScI, 3700 San Martin Drive, Baltimore, MD 21218, USA
Paul A. Crowther
Affiliation:
Dept. of Physics and Astronomy, UCL, Gower St., London WC1E 6BT, UK

Extract

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The ring nebulae that surround most Luminous Blue Variable (LBV) stars are believed to be the relics of one or more giant eruptions (cf. Nota, these proc.). The nebulae thus represent the stellar surface layers at the time of the eruption(s) and by analysing their chemical composition and dynamics, it is possible to infer the past evolutionary state of the star.

Observations with the Hubble Space Telescope (HST) and the Faint Object Spectrograph (FOS) were obtained for the nebulae around the two LMC LBVs R127 and R143, and the Ofpe/WN9 star S119 for the purpose of obtaining abundances. The spectra cover the wavelength range 3235–6818 Å and aslit of dimensions 1″.7 × 0″.2 was placed on the brightest portion of each nebula. Full details of these observations are given in Smith et al. (1998).

Type
Session VI Evolutionary Aspects
Information
International Astronomical Union Colloquium , Volume 169: Variable and Non-spherical Stellar Winds in Luminous Hot Stars , 1999 , pp. 400 - 404
Copyright
Copyright © Springer-Verlag 1999

Footnotes

*

Based on observations with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by AURA for NASA under contract NAS5-26555.

References

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