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Some Blue Stars of Peculiar Type in the Region of the South Galactic Pole

Published online by Cambridge University Press:  14 August 2015

J. A. Graham  and
A. Slettebak
J. A. Graham
Affiliation:
Cerro Tololo Inter-American Observatory∗, Chile
A. Slettebak
Affiliation:
Perkins Observatory, The Ohio State and Ohio Wesleyan Universities, U.S.A.

Abstract

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uvby photometric observations have been used in conjunction with slit spectra to classify 90 stars which were noted as peculiar by Slettebak and Brundage in a recent objective prism survey of the South Galactic Pole region. In this paper, we review the photometric classification criteria and identify in the Slettebak-Brundage list, 8 subdwarf O stars, 10 subdwarf B stars, 10 horizontal branch stars, 1 white dwarf star and 26 late subdwarf stars. Three stars with outstanding peculiarities are SB (Slettebak-Brundage) 58 which is a helium subdwarf O star, SB 319 (CD–38°245), a late type star with extremely weak metal lines and SB 845 (BD–13°6465), an A type star with a very small Balmer discontinuity.

Type
Part III: Photometric Classification
Information
Symposium - International Astronomical Union , Volume 50: Spectral Classification and Multicolour Photometry , 1973 , pp. 245 - 250
Copyright
Copyright © Reidel 1973 

References

Crawford, D. L. and Perry, C. L.: 1966, Astron. J. 71, 206.CrossRefGoogle Scholar
Crawford, D. L. and Barnes, J. V.: 1970, Astron. J. 75, 978.Google Scholar
Graham, J. A.: 1970, Publ. Astron. Soc. Pacific 82, 1305.Google Scholar
Sargent, W. L. W. and Searle, L.: 1968, Astrophys. J. 152, 443.CrossRefGoogle Scholar
Slettebak, A. and Brundage, R. K.: 1971, Astron. J. 76, 338.Google Scholar
Strömgren, B. 1963, in Strand, K. Aa. (ed.), Basic Astronomical Data, University of Chicago Press, Chicago, p. 123.Google Scholar