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A high abundance of massive galaxies 3-6 billion years after the Big Bang
July 7, 2004
A Gemini team led by Karl Galzebrook of Johns Hopkins University has just released some spectacular results obtained from the Gemini Deep Deep Survey (GDDS) in the British journal Nature.
Gemini, Subaru & Keck Discover large-scale funneling of matter onto a massive distant galaxy cluster
Large
galaxy clusters represent the largest gravitationally stable assemblies
of matter in the universe. Massive clusters of galaxies consist of
thousands of galaxies and vast quantities of extremely hot
intergalactic gas all held together by gravity. It is believed that
clusters of galaxies grow in size and in number through time and we see
many more galaxy clusters in the nearby (recent) universe than in the
distant past. The assembly and growth of massive clusters involve
complex interactions between dark matter, diffuse gas, and thousands of
The Gemini Deep Deep Survey Opens a New Window Into the Distant Universe of Galaxy Assembly
May 18, 2004
Using a sophisticated technique called Nod & Shuffle, combined with the Gemini Multi-Object Spectrograph, ultra-deep spectra of several hundred distant, elusive galaxies were captured. These observations by the Frederick C. Gillett Gemini North Telescope help to paint a new picture of the nature and evolution of galaxies some 7 - 10 billion years ago.