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The Bonner Spectral Atlas and Three-Dimensional Classification at Low Dispersions
Published online by Cambridge University Press: 14 August 2015
Abstract
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Work on the third part of the Bonner Spectral Atlas: Peculiar Stars has well progressed during the past year. Observations of the more than 200 stars – photographed with a dispersion of 240 Å mm−1 at Hγ on I-N plates – is nearing completion.
The arrangement of the spectra will be as follows:
1. WR-stars
2. O-stars Of sequence
3. Peculiar B-type stars emission-line objects
4. Ap-stars with various sequences: Cr-Mn-Hg-rare earths
5. Asi-stars
6. Am-stars
7. Late-type peculiar stars Ba II, CH
8. C-stars
9. Late M-type stars
10. S-stars
11. Composite spectra
12. Spectra with large rotational broadening
The 12 groups are displayed on 40 plates, each with 6–8 objects. Stars of groups 8 to 10 will be presented with different exposures in order to facilitate the discovery of faint objects.
Sample plates will be shown and discussed.
- Type
- Part IV/Abundance Effects in Spectral Classification
- Information
- Symposium - International Astronomical Union , Volume 72: Abundance Effects in Classification , 1976 , pp. 129 - 133
- Copyright
- Copyright © Reidel 1976
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