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A Preliminary Analysis of the Pulsating Extreme Helium Star V652 Her (BD+13°3224)

Published online by Cambridge University Press:  12 April 2016

C.S. Jeffery ,
U. Heber  and
P.W. Hill
C.S. Jeffery
Affiliation:
University Observatory, Buchanan Gardens, St Andrews, Fife KY16 9LZ, Scotland.
U. Heber
Affiliation:
Institut für Theoretische Physik und Sternwarte der Universität, Olshausenstrasse 40, D-2300 Kiel, Federal Republic of Germany
P.W. Hill
Affiliation:
University Observatory, Buchanan Gardens, St Andrews, Fife KY16 9LZ, Scotland.

Abstract

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A preliminary fine analysis of the atmosphere of the pulsating extreme star V652 Her (=BD+13°3224) is reported. The mean effective temperature and temperature variation have been determined from the ionisation equilibria of Si and N. Both of these elements are strongly overabundant, whilst C appears to be underabundant.

Type
III Hot Extreme Helium Stars
Information
International Astronomical Union Colloquium , Volume 87: Hydrogen Deficient Stars and Related Objects , 1985 , pp. 101 - 107
Copyright
Copyright © Reidel 1986

References

Berger, J. & Greenstein, J.L., 1963. Publs.astr.Soc.Pacif., 75, 336.Google Scholar
Heber, U. & Schönberner, D., 1981. Astr.Astrophys., 102, 75.Google Scholar
Heber, U., 1983. Astr.Astrophys., 118, 39.Google Scholar
Hill, P.W., Kilkenny, D., Schönberner, D. & Walker, H.J., 1981. Hon.Not.R.astr.Soc., 197, 81. (Paper I).Google Scholar
Hunger, K., 1975. Problems in Stellar Atmospheres and Envelopes, p. 57, eds Baschek, B., Kegel, W.H. & Traving, G., Springer-Verlag, Berlin.Google Scholar
Jeffery, C.S., 1984. Mon.Not.R.astr.Soc., 210, 731.Google Scholar
Jeffery, C.S. & Hill, P.W., 1986. Hon.Not.R.astr.Soc., (Paper III) (submitted).Google Scholar
Kilkenny, D. & Lynas-Gray, A.E., 1982. Mon.Not.R.astr.Soc., 198, 873.Google Scholar
Kilkenny, D. & Lynas-Gray, A.E., 1984. Mon.Not.R.astr.Soc., 208, 673.Google Scholar
Lynas-Gray, A.E., Schönberner, D., Hill, P.W. & Heber, U., 1984. Mon.Not.R.astr.Soc., 209. 387. (Paper II).Google Scholar
Schönberner, D., 1973. Astr.Astrophys., 28, 433.Google Scholar