IOK-1

IOK-1

Infobox Galaxy


name = IOK-1
epoch = J2000
type =
ra = RA|13|23|59.8
dec = DEC|+27|24|56
dist_ly = 12.9 billion light years
z = 6.96
appmag_v =
size_v =
constellation name = Coma Berenices
notes =
names =

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. [ McMahon, R. (2006). "Journey to the birth of the Universe". "Nature": vol. 443, issue of September 14, 2006. ] [ cite journal
author=Masanori Iye, "et al."
title=A galaxy at a redshift z = 6.96
url=http://www.nature.com/nature/journal/v443/n7108/abs/nature05104.html
journal=Nature
volume=443
issue=7108
pages=186–188
doi=10.1038/nature05104
year=2006
format=abstract page
] [ [http://www.subarutelescope.org/Pressrelease/2006/09/13/index.html Press release] , National Astronomical Observatory of Japan, September 13, 2006]

ee also

* Abell 2218
* Abell 370
* A1689-zD1

References


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