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Ultraviolet Colors of Subdwarf O Stars

Published online by Cambridge University Press:  14 August 2015

Paul R. Wesselius
Paul R. Wesselius*
Affiliation:
Kapteyn Institute

Extract

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The group of subdwarf O stars consisting of field stars and some central stars of old planetary nebulae does occupy an intresting place in the HR diagram. Greenstein and Sargent (1974) have tried to establish this place, and conclude that especially the hottest ones need ultraviolet data to improve the values of effective temperature and absolute luminosity.

Type
Part III: HR Diagrams, Subluminous Stars
Information
Symposium - International Astronomical Union , Volume 80: The HR Diagram , 1978 , pp. 125 - 128
Copyright
Copyright © Reidel 1978 

References

Greenstein, J.L. and Sargent, A.I. (1974). Astrophys. J. Suppl. 28, 157.CrossRefGoogle Scholar
Kudritzki, R.P. (1976). Astron. Astrophys. 52, 11.Google Scholar
Pottasch, S.R., Wesselius, P.R., Wu, C.C. and van Duinen, R.J. (1974). Astron. Astrophys. 54, 435.Google Scholar
van Duinen, R.J., Aalders, J.W.G., Wesselius, P.R., Wildeman, K.J., Wu, C.C., Luinge, W. and Snel, D. (1975). Astron. Astrophys. 39, 159.Google Scholar
van Duinen, R.J., Wesselius, P.R., Wu, C.C., Aalders, J.W.G. and Kester, D. (1977). in preparation.Google Scholar