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AEGIS survey reveals new principle governing galaxy formation and evolution

03-06-2007 · EurekAlert!

Faced with the bewildering array of galaxies in the universe, from orderly spirals to chaotic mergers, it is hard to imagine a unifying principle that describes them all with mathematical precision. But that is just what astronomers have now discovered.

Keywords: aegis, survey, reveals, principle, governing, galaxy, formation, evolution, aegi, reveal

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Galaxy survey focuses on 'pre-teen' years
03-05-2007 · EurekAlert!
A massive project to generate an all-color map of the galaxies in a small area of sky is yielding new information about the universe's "pre-teen" years and the early evolution of galaxies and galaxy clusters. The UC Berkeley-led AEGIS survey has already generated 19 papers set for publication this spring, reporting a binary black hole at the core of one galaxy, new lensing galaxies, and information about our universe as it matured through early adolescence.
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Scientists reveal how supermassive black holes bind into pairs during galaxy mergers
06-07-2007 · EurekAlert!
Now, using supercomputers to simulate galaxy mergers, scientists at Stanford and elsewhere have seen the formation of a new type of structure-a central disk of gas that can be from a hundred to a few thousand light years wide and from a few hundred million to a billion solar masses. They report the first simulated formation of a supermassive black hole (SMBH) pair in the June 7 edition of Science Express, an online version of Science magazine.
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New population of faint protogalaxies discovered
11-28-2007 · EurekAlert!
Carnegie astronomers have found a new population of faint protogalaxies by taking the most sensitive spectroscopic survey ever of a time when the universe was only 15 percent of its present age. These objects are the probable building blocks of galaxies today, including our own Milky Way. The discovery substantiates a popular theory of galaxy formation.
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The smallest piece of ice reveals its true nature
06-21-2007 · EurekAlert!
Collaborative research between scientists in the UK and Germany (published in this week's Nature Materials) has led to a breakthrough in the understanding of the formation of ice. Dr Angelos Michaelides of the London Centre for Nanotechnology (formerly of the Fritz-Haber Institut der Max-Planck Gesellschaft in Berlin) and Professor Karina Morgenstern of the Leibniz University Hannover have combined experimental observations with theoretical modelling to reveal with unprecedented resolution the structures of the smallest pieces of ice that form on hydrophobic metal surfaces.
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Carnegie Mellon University-led team conducts most detailed cosmological simulation to date
06-28-2007 · EurekAlert!
Using a new computer model of galaxy formation, researchers have shown that growing black holes release a blast of energy that fundamentally regulates galaxy evolution and black hole growth itself. The model explains for the first time observed phenomena and promises to deliver deeper insights into our understanding of galaxy formation and the role of black holes throughout cosmic history. The results were generated by an international team of investigators.
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Stellar Opposites: Sky survey reveals new halo of stars
12-15-2007 · Science News Online
The Milky Way galaxy possesses a distinct outer halo that orbits in the opposite direction from its inner halo and the rest of the galaxy.
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XMM-Newton reveals X-rays from gas streams around young stars
05-31-2007 · European Space Agency (ESA)
XMM-Newton has surveyed nearly two hundred stars under formation to reveal, contrary to expectations, how streams of matter fall onto the young stars' magnetic atmospheres and radiate X-rays.
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Revealing the mysteries of galaxy formation: Infrared images of the Large Magellanic Cloud
11-01-2006 · EurekAlert!
As the AKARI satellite nears completion of its All Sky Survey, it has released two stunning images of the Large Magellanic Cloud. AKARI is an infrared astronomical satellite from the Japan Aerospace Exploration Agency (JAXA) with involvement from the UK, the Netherlands and the European Space Agency.
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First 3-D map of the universe's dark matter scaffolding
01-07-2007 · EurekAlert!
By analysing the COSMOS survey -- the largest ever survey undertaken with Hubble -- an international team of scientists has assembled one of the most important results in cosmology: A three-dimensional map that offers a first look at the web-like large-scale distribution of dark matter in the universe. This historic achievement accurately confirms standard theories of structure formation.
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Akari's observations of galaxy M101
09-07-2007 · European Space Agency (ESA)
M101 is a spiral galaxy, 170 000 light-years in diameter. AKARI's new observations reveal differing populations of stars spread across its spiral arms.
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