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The exclusion of a significant range of ages in a massive star cluster

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  • Chengyuan Li

    (Kavli Institute for Astronomy and Astrophysics, Peking University, Yi He Yuan Lu 5, Hai Dian District, Beijing 100871, China
    Peking University, Yi He Yuan Lu 5, Hai Dian District, Beijing 100871, China
    Key Laboratory for Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China)

  • Richard de Grijs

    (Kavli Institute for Astronomy and Astrophysics, Peking University, Yi He Yuan Lu 5, Hai Dian District, Beijing 100871, China
    Peking University, Yi He Yuan Lu 5, Hai Dian District, Beijing 100871, China)

  • Licai Deng

    (Key Laboratory for Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China)

Abstract

Hubble Space Telescope observations of the stellar cluster NGC 1651, which is approximately two billion years old, show that the colour–brightness distribution of stars old enough to have left the main sequence can be explained only by a single-age population, despite having a feature usually interpreted to indicate an age spread of more than 300 million years.

Suggested Citation

  • Chengyuan Li & Richard de Grijs & Licai Deng, 2014. "The exclusion of a significant range of ages in a massive star cluster," Nature, Nature, vol. 516(7531), pages 367-369, December.
    • Handle: RePEc:nat:nature:v:516:y:2014:i:7531:d:10.1038_nature13969
    DOI: 10.1038/nature13969
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