Why are some galaxies brighter than others?
Bright galaxies where stars are forming may outshine dimmer, more massive galaxies. In all previous surveys of the “Redshift Desert,” the brighter star-forming galaxies were the only type bright enough to be sampled. The Gemini Deep Deep Survey was able to sample the dimmer, more massive galaxies and provide a better representation of the galaxies at this epoch of the Universe. The GDDS results revealed that there is a greater abundance of these more massive and older galaxies than expected from current models when the Universe was only 20-40% of its current age.
Credit:Gemini Observatory/NSF/AURA/J. Lomberg
About the Image
Id: | gemini0406c |
Type: | Artwork |
Release date: | Oct. 8, 2004, 8 p.m. |
Related releases: | gemini0406 |
Size: | 1991 x 1500 px |
About the Object
Category: | Galaxies |