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The Near Ultraviolet Spectrum of FE III as a Classification Criterion

Published online by Cambridge University Press:  30 March 2016

R. Faraggiana ,
H. J. G. L. M. Lamers  and
M. Burger
R. Faraggiana
Affiliation:
Astronomical Observatory, Trieste, Italy
H. J. G. L. M. Lamers
Affiliation:
The Astronomical Institute, Utrecht, the Netherlands
M. Burger
Affiliation:
Astrophysical Institute, Vrije Universiteit Brussel, Belgium

Extract

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The Utrecht Orbiting Ultraviolet Stellar Spectrophotometer S59 on board the ESRO TD-1A satellite has observed ultraviolet spectra of about 200 stars in the wavelength regions 2060–2160 Å. 2490–2590 Å and 2770–2870 Å with a resolution of 1.8 Å (cf. de Jager et al., 1974). The spectra are analyzed in order to find UV criteria for stellar classification. Particular attention has been given to Fe III lines since no strong lines of this ion occur in the visible part of the spectrum. As one of the most striking results, it is found that the feature at 2078 Å, which is mainly due to Fe III, is very sensitive to luminosity.

Type
Joint Dicussions
Information
Highlights of Astronomy , Volume 4 , Issue 2: Highlights of Astronomy. As presented at the XVIth General Assembly of the IAU, 1976 (Part II) , 1977 , pp. 349 - 351
Copyright
Copyright © Reidel 1977

References

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