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Spectral Classification from Copernicus Data

Published online by Cambridge University Press:  30 March 2016

William P. Bidelman*
Affiliation:
Warner & Swasey Observatory-Case Western Reserve Univ. Cleveland, Ohio, U.S.A.

Extract

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The suitability of Copernicus U2 spectrometer scans (resolution 0.2 Å, spectral range roughly 1000–1450 Å) for purposes of spectral classification is discussed. The main conclusion is that while many features in the spectra complicate the situation (numerous interstellar features and those related to the phenomenon of mass loss), the general behavior of the lines in the spectra of most of the 22 stars studied is entirely consistent with the presently accepted classifications of these objects. Whether a significant increase in the accuracy of determination of all of the relevant classification parameters can be obtained from this material is not yet certain. It is emphasized that study of the high-resolution Copernicus scans should be of great value for forthcoming classification programs necessarily utilizing spectral data of considerably lower resolution.

Type
Joint Dicussions
Copyright
Copyright © Reidel 1977

References

Gaustad, J. E. and Spitzer, L.: 1961, Astrophys. J. 134, 771.Google Scholar
Maury, A. C.: 1897, Harvard Ann. 28, 3.Google Scholar
Underhill, A. B.: 1974, Astrophys. J. Suppl. 27, 359 (No. 249).Google Scholar
Walborn, N. R.: 1976, Astrophys. J. 205, 419.Google Scholar
Williams, E. G.: 1934, Publ. Astron. Soc. Pacific 46, 292.Google Scholar