News tagged with massive galaxies
Discovery poses challenge to galaxy formation theories
Apr 10, 2009 |
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A team led by an Indiana University astronomer has found a sample of massive galaxies with properties that suggest that they may have formed relatively recently. This would run counter to the widely-held belief ...
Caltech astronomers describe the bar scene at the beginning of the universe
Jul 29, 2008 |
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Bars abound in spiral galaxies today, but this was not always the case. A group of 16 astronomers, led by Kartik Sheth of NASA's Spitzer Science Center at the California Institute of Technology, has found that bars tripled ...
How Do Galaxies Grow?
Aug 26, 2008 |
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How do galaxies form? The most widely accepted answer to this fundamental question is the model of 'hierarchical formation', a step-wise process in which small galaxies merge to build larger ones. One can ...
Dramatically backlit dust in giant galaxy
Apr 07, 2009 |
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A new Hubble image highlights striking swirling dust lanes and glittering globular clusters in oddball galaxy NGC 7049.
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Stars forced to relocate near the Southern Fish
Mar 03, 2009 |
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About 100 million light-years away, in the constellation of Piscis Austrinus (the Southern Fish), three galaxies are playing a game of gravitational give-and-take that might ultimately lead to their merger ...
Heavyweight galaxies puzzle astronomers
Apr 02, 2009 |
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(PhysOrg.com) -- Astronomers have discovered large galaxies some two thirds of the way back in time to the big bang. This surprising find casts doubt on theories of how the biggest galaxies form.
A Black Hole in Medusa's Hair
Mar 11, 2009 |
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This composite image of the Medusa galaxy (also known as NGC 4194) shows X-ray data from NASA's Chandra X-ray Observatory in blue and optical light from the Hubble Space Telescope in orange. Located above ...
Antennae Galaxies
May 19, 2008 |
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This image of the Antennae galaxies is the sharpest yet of this merging pair of galaxies. During the course of the collision, billions of stars will be formed. The brightest and most compact of these star ...
Cosmologists 'see' the cosmic dawn
Feb 11, 2009 |
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(PhysOrg.com) -- The images, produced by scientists at Durham University's Institute for Computational Cosmology, show the "Cosmic Dawn" - the formation of the first big galaxies in the Universe.
Star-Forming Backbone of a Massive Structure in the Early Universe Photographed
May 20, 2009 |
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(PhysOrg.com) -- Using a special camera known as AzTEC developed by a research team led by Grant Wilson, astronomy professor at the University of Massachusetts Amherst, an international research group has ...
A Galaxy Collision in Action
Jul 09, 2009 |
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This beautiful image gives a new look at Stephan's Quintet, a compact group of galaxies discovered about 130 years ago and located about 280 million light years from Earth. The curved, light blue ridge running ...
Astronomers Discover Most Dark Matter-Dominated Galaxy in Universe
Sep 18, 2008 |
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(PhysOrg.com) -- A team led by a Yale University astronomer has discovered the least luminous, most dark matter-filled galaxy known to exist.
Astronomers discover upper mass limit for black holes
Sep 11, 2008 |
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There appears to be an upper limit to how big the universe's most massive black holes can get, according to new research led by a Yale University astrophysicist.
Old galaxies stick together in the young universe
Apr 04, 2008 |
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UK astronomers have developed the most sensitive infrared map of the distant universe ever produced, revealing the origins of the most massive galaxies in the cosmos.
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