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MICHELLE and HIRES Observing Times are Traded

Over the past few years, a more coordinated approach to the building and using of new instruments for very large telescopes has gained strong support among science policy makers and, increasingly, among scientists themselves.  In this spirit, we are pleased to announce that Gemini and Keck have agreed to exchange five nights of observing time at each facility in semester 2005A.  The Gemini user community will have access to five nights of HIRES, the optical high-resolution spectrograph on Keck I. In return, Keck users will have access to the

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