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A close halo of large transparent grains around extreme red giant stars

Author

Listed:
  • Barnaby R. M. Norris

    (Sydney Institute for Astronomy, School of Physics, University of Sydney, New South Wales 2006, Australia)

  • Peter G. Tuthill

    (Sydney Institute for Astronomy, School of Physics, University of Sydney, New South Wales 2006, Australia)

  • Michael J. Ireland

    (Sydney Institute for Astronomy, School of Physics, University of Sydney, New South Wales 2006, Australia
    Macquarie University, New South Wales 2109, Australia
    Australian Astronomical Observatory, PO Box 296, Epping, New South Wales 1710, Australia)

  • Sylvestre Lacour

    (LESIA-Observatoire de Paris, CNRS, Université Pierre et Marie Curie, Université Paris-Diderot, Meudon 92190, France)

  • Albert A. Zijlstra

    (Jodrell Bank Centre for Astrophysics, School of Physics & Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK)

  • Foteini Lykou

    (Jodrell Bank Centre for Astrophysics, School of Physics & Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK)

  • Thomas M. Evans

    (Sydney Institute for Astronomy, School of Physics, University of Sydney, New South Wales 2006, Australia
    Denys Wilkinson Building, Keble Road, University of Oxford, Oxford OX1 3RH, UK)

  • Paul Stewart

    (Sydney Institute for Astronomy, School of Physics, University of Sydney, New South Wales 2006, Australia)

  • Timothy R. Bedding

    (Sydney Institute for Astronomy, School of Physics, University of Sydney, New South Wales 2006, Australia)

Abstract

The dust shells of three intermediate-mass stars are observed to lie remarkably close to the photosphere and to be composed of unexpectedly large grains, consistent with mass loss from such stars occurring by means of ejection of this dust by photon scattering rather than as a result of radiation pressure.

Suggested Citation

  • Barnaby R. M. Norris & Peter G. Tuthill & Michael J. Ireland & Sylvestre Lacour & Albert A. Zijlstra & Foteini Lykou & Thomas M. Evans & Paul Stewart & Timothy R. Bedding, 2012. "A close halo of large transparent grains around extreme red giant stars," Nature, Nature, vol. 484(7393), pages 220-222, April.
    • Handle: RePEc:nat:nature:v:484:y:2012:i:7393:d:10.1038_nature10935
    DOI: 10.1038/nature10935
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