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Extremely metal-poor gas at a redshift of 7

Author

Listed:
  • Robert A. Simcoe

    (MIT-Kavli Institute for Astrophysics and Space Research, 77 Massachusetts Avenue, Building 37, Room 664L, Cambridge, Massachusetts 02139, USA)

  • Peter W. Sullivan

    (MIT-Kavli Institute for Astrophysics and Space Research, 77 Massachusetts Avenue, Building 37, Room 664L, Cambridge, Massachusetts 02139, USA)

  • Kathy L. Cooksey

    (MIT-Kavli Institute for Astrophysics and Space Research, 77 Massachusetts Avenue, Building 37, Room 664L, Cambridge, Massachusetts 02139, USA)

  • Melodie M. Kao

    (MIT-Kavli Institute for Astrophysics and Space Research, 77 Massachusetts Avenue, Building 37, Room 664L, Cambridge, Massachusetts 02139, USA
    California Institute of Technology, 1200 East California Boulevard, MC 249-17, Pasadena, California 01125, USA)

  • Michael S. Matejek

    (MIT-Kavli Institute for Astrophysics and Space Research, 77 Massachusetts Avenue, Building 37, Room 664L, Cambridge, Massachusetts 02139, USA)

  • Adam J. Burgasser

    (Center for Astrophysics and Space Science, University of California San Diego, MC 0424, 9500 Gilman Drive, La Jolla, California 92093, USA)

Abstract

The spectrum of a quasar at redshift 7.04 reveals absorption from a large column of foreground neutral hydrogen with no corresponding heavy elements; this absorbing gas is either diffuse and intergalactic but has not yet been ionized by starlight at this early epoch, or it is gravitationally bound to a proto-galaxy that has a chemical abundance

Suggested Citation

  • Robert A. Simcoe & Peter W. Sullivan & Kathy L. Cooksey & Melodie M. Kao & Michael S. Matejek & Adam J. Burgasser, 2012. "Extremely metal-poor gas at a redshift of 7," Nature, Nature, vol. 492(7427), pages 79-82, December.
    • Handle: RePEc:nat:nature:v:492:y:2012:i:7427:d:10.1038_nature11612
    DOI: 10.1038/nature11612
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