News tagged with blue stragglers
Young stars at home in ancient cluster
(PhysOrg.com) -- Looking like a hoard of gems fit for an emperor's collection, this deep sky object called NGC 6752 is in fact far more worthy of admiration. It is a globular cluster, and at over 10 billion ...
Feb 09, 2012 |
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Blue stragglers: Astronomers discover how mysterious stars stay so young
(PhysOrg.com) -- Mysterious "blue stragglers" are old stars that appear younger than they should be: they burn hot and blue. Several theories have attempted to explain why they don't show their age, but, until ...
Oct 19, 2011 |
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Hubble finds rare 'blue straggler' stars in Milky Way's hub
(PhysOrg.com) -- NASA's Hubble Space Telescope has found a rare class of oddball stars called blue stragglers in the hub of our Milky Way, the first detected within our galaxy's bulge.
May 26, 2011 |
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Vampires and collisions rejuvenate stars
Stars in globular clusters are generally extremely old, with ages of 12-13 billion years. However, a small fraction of them appear to be significantly younger than the average population and, because they ...
Dec 23, 2009 |
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Even stars get fat -- And 'stellar cannibalism' is the reason
Researchers have discovered evidence that blue stragglers in globular clusters, whose existence has long puzzled astronomers, are the result of 'stellar cannibalism' in binary stars. In other words, binary ...
Jan 14, 2009 |
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