Nature 440, 1145-1150 (27 April 2006) | doi:10.1038/nature04806
High-redshift galaxy populations
Esther M. Hu1 and Lennox L. Cowie1
Top of pageAbstractWe now see many galaxies as they were only 800 million
years after the Big Bang, and that limit may soon be exceeded when
wide-field infrared detectors are widely available. Multi-wavelength studies
show that there was relatively little star formation at very early times and
that star formation was at its maximum at about half the age of the
Universe. A small number of high-redshift objects have been found by
targeting X-ray and radio sources and most recently, -ray bursts. The -ray
burst sources may provide a way to reach even higher-redshift galaxies in
the future, and to probe the first generation of stars.
Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive,
Honolulu, Hawaii 96822, USA.
Abstract and Full Text Links at Nature
http://www.nature.com/nature/journal/v440/n7088/abs/nature04806.html
Comment:
We'll be able to see galaxies that formed before the Big Bang soon enough.
Just a few short years ago we read that stars did not begin to form for 1
billion years after the BB, now we can see fully formed galaxies at 800
million...
--
Posted by
Robert Karl Stonjek
.
|
