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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

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