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Helium Abundance Determinations In Main Sequence B Stars

Published online by Cambridge University Press:  25 April 2016

R. W. Simpson
R. W. Simpson*
Affiliation:
Department of Physics, University of Queensland
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Extract

The most recent helium abundance determinations in main sequence B stars are those of Hardrop and Scholtz, Kodaira and Scholtz, Norris, and Leckrone. Their results indicate that it is possible to assign a helium abundance which is characteristic of all B stars. Norris and Leckrone worked with a number of B stars ranging from B0 to B9, and both have assigned a characteristic helium abundance to the B stars. Norris derived a value, A = 0.088 ± 0.012, and Leckrone a value of A = 0.106 ± 0.01, where A is the abundance of helium relative to hydrogen by number.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 2 , Issue 1 , July 1971 , pp. 27 - 30
Copyright
Copyright © Astronomical Society of Australia 1971

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References

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