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Be stars in the ultraviolet spectral classification system
Published online by Cambridge University Press: 26 May 2016
Extract
Rountree and Sonneborn (1991) developed a system for the classification of ultraviolet B-star spectra, using MK standards drawn from the optical region. The observational material consisted of high-dispersion spectra obtained with the Short Wavelength Prime (SWP) camera on the International Ultraviolet Explorer (IUE) spacecraft. The classification criteria were based exclusively on photospheric absorption lines, primarily lines of C III, Si II, and Si III. The stellar wind lines of Si IV, C IV, and N V were not used in the classification.
- Type
- 5. Be Stars: Spectroscopy and Photometry
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- Copyright © Kluwer 1994