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October 20, 2011

Blue Stragglers: Astronomers discover how mysterious stars stay so young

All stars age with time, and most stars show that age through their color, brightness, and temperature. However, there are exceptions to this rule, and they are called "Blue stragglers." These stars are old, however they "burn hot and blue," unlike stars of their age. Up until this day, no one could explain this strange phenomena. But now, Aaron M. Geller from Northwestern University and Robert Mathieu from the University of Chicago seem to have discovered the reason. According to their research, a process called mass transfer allows a planet to "eat up the mass, or outer envelope" of a companion star. This allows the blue straggler to burn more fuel and thus preserve its blue, young-looking appearance.

Full Article:http://www.astronomy.com/en/News-Observing/News/2011/10/Blue%20stragglers%20-%20Astronomers%20discover%20how%20mysterious%20stars%20stay%20so%20young.aspx

Posted by lwasher at October 20, 2011 11:20 AM

Comments

Also noticed this on CNN.com

http://lightyears.blogs.cnn.com/2011/10/19/why-these-blue-stars-shouldnt-exist/

Posted by: lwasher at October 20, 2011 02:10 PM

Also found this on CNN.com
http://lightyears.blogs.cnn.com/2011/10/19/why-these-blue-stars-shouldnt-exist/

Posted by: lwasher at October 20, 2011 02:11 PM

Also found this on CNN.com
http://lightyears.blogs.cnn.com/2011/10/19/why-these-blue-stars-shouldnt-exist/

Posted by: lwasher at October 20, 2011 02:11 PM

This is very interesting. I wonder how this will change our perspective on using light spectrums for astronomical research.

Posted by: kimnath at October 21, 2011 01:35 PM

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