News tagged with galaxy clusters

VST captures collisions in young galaxy cluster

(PhysOrg.com) -- The VLT Survey Telescope (VST) at ESO’s Paranal Observatory in Chile has imaged a fascinating collection of interacting galaxies in the Hercules galaxy cluster. The sharpness of the new ...

dateMar 07, 2012 in Astronomy
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Galaxy cluster hidden in plain view

(PhysOrg.com) -- A team of astronomers has discovered the most distant cluster of red galaxies ever observed using FourStar, a new and powerful near-infrared camera on the 6.5m Magellan Baade Telescope. The ...

dateMar 06, 2012 in Astronomy
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Dark matter core defies explanation

(PhysOrg.com) -- Astronomers using data from NASA's Hubble Telescope have observed what appears to be a clump of dark matter left behind from a wreck between massive clusters of galaxies. The result could ...

dateMar 02, 2012 in Astronomy
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Mystery deepens around dark core in cosmic collision

Five years ago, San Francisco State researcher Andisheh Mahdavi and his colleagues observed an unexpected dark core at the center of Abell 520, a cosmic "train wreck" of galaxy clusters. With new space-based telescope observations, ...

dateMar 02, 2012 in Astronomy
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The star factory: observing Arp 220

Using the Herschel Space Observatory, Wilson's group has found Arp 220 to have large amounts of very warm molecular hydrogen gas, a surprising find that implies molecular hydrogen is the dominant coolant in the high-temperature ...

dateFeb 18, 2012 in Astronomy
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Black hole came from a shredded galaxy

(PhysOrg.com) -- Astronomers using NASA's Hubble Space Telescope have found a cluster of young, blue stars encircling the first intermediate-mass black hole ever discovered. The presence of the star cluster ...

dateFeb 15, 2012 in Astronomy
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The survivors of a 13 billion year old massacre

(PhysOrg.com) -- Our Milky Way galaxy is surrounded by some 200 compact groups of stars, containing up to a million stars each. At 13 billion years of age, these globular clusters are almost as old as the ...

dateFeb 14, 2012 in Astronomy
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