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Age and Initial Helium Abundance of Stars in the Globular Cluster M15

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Abstract

This article describes estimates of the ages and initial helium abundances of stars in M15, which are among the oldest objects in the galaxy as well as representing the galaxy's most abundant stellar component.

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References

  1. Iben, I., and Faulkner, J., Astrophys. J., 153, 101 (1968).

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  2. Rood, R., and Iben, I., Astrophys. J., 154 (in the press).

  3. Iben, I., Astrophys. J., 154 (in the press).

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Authors and Affiliations

  1. Massachusetts Institute of Technology, Cambridge, Massachusetts

    ICKO IBEN jun.

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  1. ICKO IBEN jun.
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IBEN, I. Age and Initial Helium Abundance of Stars in the Globular Cluster M15. Nature 220, 143–146 (1968). https://doi.org/10.1038/220143a0

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  • DOI: https://doi.org/10.1038/220143a0

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