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The Period of the Extreme Helium Star BD+1°4381

Published online by Cambridge University Press:  12 April 2016

C.S. Jeffery ,
P.W. Hill  and
K. Morrison
C.S. Jeffery
Affiliation:
University ObservatoryBuchanan Gardens St Andrews Fife KY16 9LZScotland
P.W. Hill
Affiliation:
University ObservatoryBuchanan Gardens St Andrews Fife KY16 9LZScotland
K. Morrison
Affiliation:
University ObservatoryBuchanan Gardens St Andrews Fife KY16 9LZScotland

Abstract

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Photometry of the variable extreme helium star BD+1°4381 is used to improve the 21.2 day period found by Jeffery & Malaney (1985). The amplitude of the light-curve appears to be variable, resembling that of RY Sgr. Variability in the extreme helium star BD−1°3438 is also reported.

Type
III Hot Extreme Helium Stars
Information
International Astronomical Union Colloquium , Volume 87: Hydrogen Deficient Stars and Related Objects , 1985 , pp. 95 - 100
Copyright
Copyright © Reidel 1986

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