Abstract
IN a recent communication Deeming and Walker1 have found that for hot stars there is a significant positive correlation between their helium line strengths and their apparent rotational velocities. This result has important consequences for problems of the primordial helium abundance, because it implies that meaningful determinations of the stellar helium content cannot be obtained from observations of the helium line strengths in stellar spectra.
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HYLAND, A. Rotation and the Helium Line Strengths in B Stars. Nature 214, 899–900 (1967). https://doi.org/10.1038/214899a0
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DOI: https://doi.org/10.1038/214899a0
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