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Spectroscopic confirmation of a galaxy at redshift z = 8.6

Author

Listed:
  • M. D. Lehnert

    (GEPI, Observatoire de Paris, CNRS, Université Paris Diderot, 5 Place Jules Janssen, 92190 Meudon, France)

  • N. P. H. Nesvadba

    (Institut d’Astrophysique Spatiale, UMR 8617, CNRS, Université Paris-Sud, Bâtiment 121, F-91405 Orsay Cedex, France)

  • J.-G. Cuby

    (Laboratoire d’Astrophysique de Marseille, OAMP, Universit Aix-Marseille & CNRS 38 Rue Frédéric Joliot Curie)

  • A. M. Swinbank

    (Institute for Computational Cosmology, Durham University)

  • S. Morris

    (University of Durham)

  • B. Clément

    (Laboratoire d’Astrophysique de Marseille, OAMP, Universit Aix-Marseille & CNRS 38 Rue Frédéric Joliot Curie)

  • C. J. Evans

    (UK Astronomy Technology Centre, Royal Observatory)

  • M. N. Bremer

    (H. H. Wills Physics Laboratory)

  • S. Basa

    (Laboratoire d’Astrophysique de Marseille, OAMP, Universit Aix-Marseille & CNRS 38 Rue Frédéric Joliot Curie)

Abstract

A galaxy at redshift z ≈ 8.6 Until now, the most distant spectroscopically confirmed galaxies known in the Universe were at redshifts z ≈ 8.2 and z ≈ 6.96. Lehnert et al. now report that UDFy-38135539 is at a redshift of z = 8.6. The galaxy was first identified as a candidate z ≈ 8.6 object in deep Wide Field Camera 3 observations of the Hubble Ultra Deep Field, and the discovery in ground-based observations that it is emitting Lyman-α photons provides confirmation. This single source is unlikely to provide enough photons to ionize the volume necessary for the emission line to escape, requiring a significant contribution from other, probably fainter galaxies nearby.

Suggested Citation

  • M. D. Lehnert & N. P. H. Nesvadba & J.-G. Cuby & A. M. Swinbank & S. Morris & B. Clément & C. J. Evans & M. N. Bremer & S. Basa, 2010. "Spectroscopic confirmation of a galaxy at redshift z = 8.6," Nature, Nature, vol. 467(7318), pages 940-942, October.
    • Handle: RePEc:nat:nature:v:467:y:2010:i:7318:d:10.1038_nature09462
    DOI: 10.1038/nature09462
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