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Identification of 3He in the Binary System 68u Her

Published online by Cambridge University Press:  14 August 2015

R. W. Hilditch  and
P. W. Hill
R. W. Hilditch
Affiliation:
University Observatory, St. Andrews, Fife, Scotland
P. W. Hill
Affiliation:
University Observatory, St. Andrews, Fife, Scotland

Abstract

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From a radial velocity study of 60 spectrograms of the binary system 68u Her, systematic velocity differences have been found to exist between the He I singlet lines and the He I triplet lines of the primary component. These differences are independent of orbital phase, date of observation or spectrograph employed and can be interpreted in terms of the existence of a large fraction of 3He in the atmosphere of the primary component. A 3He/4He ratio of between 4:1 and 49:1 is suggested.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 73: Structure and Evolution of Close Binary Systems , 1976 , pp. 317
Copyright
Copyright © Reidel 1976