IOK-1

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IOK-1
Observation data (J2000 epoch)
Constellation Coma Berenices
Right ascension 13h 23m 59.8s
Declination +27° 24′ 56″
Redshift 6.96
Distance 12.9 billion light years
See also: Galaxy, List of galaxies

IOK-1, probably one of the oldest and most distant galaxy yet found - seen as it was 12.88 billion years ago, was discovered in April 2006 by Masanori Iye at National Astronomical Observatory of Japan using the Subaru Telescope in Hawaii. Its emission of Lyman alpha radiation has a redshift of 6.96, corresponding to just 750 million years after the Big Bang. While some scientists have claimed other objects (such as Abell 1835 IR1916) to be even older, the IOK-1's age and composition have been more reliably established. [1] [2] [3]

[edit] References

  1. ^ McMahon, R. (2006). Journey to the birth of the Universe. Nature: vol. 443, issue of September 14, 2006.
  2. ^ Masanori Iye, et al. (2006). "A galaxy at a redshift z = 6.96" (abstract page). Nature 443 (7108): 186–188. doi:10.1038/nature05104. 
  3. ^ Press release, National Astronomical Observatory of Japan, September 13, 2006
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