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The Radial Velocity Curve of V652 Her (BD+13°3224)

Published online by Cambridge University Press:  12 April 2016

P.W. Hill  and
C.S. Jeffery
P.W. Hill
Affiliation:
University Observatory Buchanan Sardens St Andrews Fife KY16 9LZScotland
C.S. Jeffery
Affiliation:
University Observatory Buchanan Sardens St Andrews Fife KY16 9LZScotland

Abstract

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New radial velocity data for the pulsating extreme helium star V652 Her (BD+13°3224) have been obtained with a time resolution of 100 s. High frequency structure in the radial velocity curve is detected, and a comparison with previous data suggests that the detailed shape of the velocity curve is variable. The data imply that the effective surface gravity must increase by a factor of 4 at minimum radius.

Type
III Hot Extreme Helium Stars
Information
International Astronomical Union Colloquium , Volume 87: Hydrogen Deficient Stars and Related Objects , 1985 , pp. 109 - 115
Copyright
Copyright © Reidel 1986

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