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Spectral Classification in the Small Magellanic Cloud

Published online by Cambridge University Press:  14 August 2015

P. Dubois ,
M. Jaschek  and
C. Jaschek
P. Dubois
Affiliation:
Observatoire de Strasbourg, France
M. Jaschek
Affiliation:
Observatoire de Strasbourg, France
C. Jaschek
Affiliation:
Observatoire de Strasbourg, France

Abstract

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This paper presents results obtained in classifying 26 supergiants of the Small Magellanic Cloud. The main results are:

  1. – The hydrogen lines are not as sharp as expected for such luminous stars.

  2. – Generally, for the A-type stars, the calcium K-line is too strong compared to the other metallic lines.

  3. – There are differences in the behaviour of the different metals.

  4. – Often, the stars present variations in their spectra.

  5. – 50% of the stars brighter than mv = 11.3 have an enhancement of the H8 Balmer line, which is one of the characteristics of a shell star.

  6. – The comparison with the Radcliffe classification and Dachs classification is, except in very few cases, in good agreement.

Type
Part IV/Abundance Effects in Spectral Classification
Information
Symposium - International Astronomical Union , Volume 72: Abundance Effects in Classification , 1976 , pp. 149 - 152
Copyright
Copyright © Reidel 1976 

References

Dachs, I.: 1970, Astron. Astrophys. 9, 95.Google Scholar
Feast, M. N., Thackeray, A. D., and Wesselink, A. J.: 1960, Monthly Notices Roy. Astron. Soc. 121, 337.Google Scholar
Florsch, A.: 1972, Publication de l'Observatoire Astronomique de Strasbourg, Vol. 2 fasc. 1.Google Scholar
Hutching, J. B.: 1971, in Hack, M. (ed.), Colloquium on Supergiant Stars , Osservatorio Astronomico di Trieste, Trieste, p. 38.Google Scholar
Hutching, J. B. and Laskarides, P. G.: 1973, Publ. Dominion Astrophys. Obs. 14, 107.Google Scholar
Osmer, P. S.: 1973, Astrophys. J. 184, 127.Google Scholar
Rosendhal, J. D.: 1973, Astrophys. J. 186, 909.Google Scholar
Sanduleak, N.: 1968, Astron. J. 73, 246.Google Scholar