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Dynamical age differences among coeval star clusters as revealed by blue stragglers

Author

Listed:
  • F. R. Ferraro

    (University of Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy)

  • B. Lanzoni

    (University of Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy)

  • E. Dalessandro

    (University of Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy)

  • G. Beccari

    (European Southern Observatory, Karl Schwarzschild Strasse 2, D-85748 Garching bei München, Germany)

  • M. Pasquato

    (University of Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy)

  • P. Miocchi

    (University of Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy)

  • R. T. Rood

    (University of Virginia, PO Box 400325, Charlottesville, Virginia 22904, USA)

  • S. Sigurdsson

    (Pennsylvania State University, 525 Davey Laboratory, University Park)

  • A. Sills

    (McMaster University, Hamilton, Ontario L8S 4M1, Canada)

  • E. Vesperini

    (Indiana University)

  • M. Mapelli

    (INAF–Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, Italy)

  • R. Contreras

    (University of Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy)

  • N. Sanna

    (University of Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy)

  • A. Mucciarelli

    (University of Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy)

Abstract

Globular clusters can be grouped into a few distinct families on the basis of the radial distribution of ‘blue stragglers’, stars with masses greater than those at the turn-off point on the main sequence; this grouping can yield a direct measure of the cluster’s dynamical age purely from observed properties.

Suggested Citation

  • F. R. Ferraro & B. Lanzoni & E. Dalessandro & G. Beccari & M. Pasquato & P. Miocchi & R. T. Rood & S. Sigurdsson & A. Sills & E. Vesperini & M. Mapelli & R. Contreras & N. Sanna & A. Mucciarelli, 2012. "Dynamical age differences among coeval star clusters as revealed by blue stragglers," Nature, Nature, vol. 492(7429), pages 393-395, December.
    • Handle: RePEc:nat:nature:v:492:y:2012:i:7429:d:10.1038_nature11686
    DOI: 10.1038/nature11686
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    Cited by:

    1. Francesco R. Ferraro & Alessio Mucciarelli & Barbara Lanzoni & Cristina Pallanca & Mario Cadelano & Alex Billi & Alison Sills & Enrico Vesperini & Emanuele Dalessandro & Giacomo Beccari & Lorenzo Mona, 2023. "Fast rotating blue stragglers prefer loose clusters," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

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