News tagged with galaxy evolution

Astronomers pin down galaxy collision rate

( -- A new analysis of images from the Hubble Space Telescope combined with supercomputer simulations of galaxy collisions has cleared up years of confusion about the rate at which smaller galaxies merge to form ...

dateOct 27, 2011 in Astronomy
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Close encounters of the galactic kind

( -- Astronomers have used a large survey to test a prediction that close encounters between galaxies can trigger the rapid growth of supermassive black holes. Key to this work was Chandra's unique ability to ...

dateOct 26, 2011 in Astronomy
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Is M85 missing a black hole?

The conventional wisdom of galaxies is that they should have a central massive black hole (CMBH). The presence of such objects has been confirmed in our own galaxy as well as numerous other galaxies, including the Andromeda ...

dateOct 17, 2011 in Astronomy
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Stellar winds

( -- The Sun, glowing with a surface temperature of about 5500 degrees Celsius, warms the Earth with its salutary light. Meanwhile the Sun's hot outer layer (the corona), with its temperature of over a million ...

dateOct 10, 2011 in Astronomy
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Small distant galaxies host supermassive black holes

( -- Using the Hubble Space Telescope to probe the distant universe, astronomers have found supermassive black holes growing in surprisingly small galaxies. The findings suggest that central black holes formed ...

dateSep 15, 2011 in Astronomy
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A cosmic exclamation point

( -- VV 340, also known as Arp 302, provides a textbook example of colliding galaxies seen in the early stages of their interaction. The edge-on galaxy near the top of the image is VV 340 North and the face-on ...

dateAug 12, 2011 in Astronomy
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