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Thursday, January 3, 2013

Infrared Bow Shock: Zeta Ophiuchi Star System

 
Photo of Star in Infrared Wavelength
Zeta Ophiuchi

 Zeta Ophiuchi Bow Shock

The giant star Zeta Ophiuchi is having a "shocking" effect on the surrounding dust clouds in this infrared image from NASA’s Spitzer Space Telescope. Image credit: NASA/JPL-Caltech 
Like a ship plowing through still waters, the giant star Zeta Ophiuchi is speeding through space, making waves in the dust ahead. NASA's Spitzer Space Telescope has captured a dramatic, infrared portrait of these glowing waves, also known as a bow shock.

Astronomers theorize...

Astronomers theorize that this star was once sitting pretty next to a companion star even heftier than itself. But when that star exploded, Zeta Ophiuchi was kicked away and sent flying. Zeta Ophiuchi, which is 20 times more massive and 80,000 times brighter than our sun, is racing along at about 54,000 mph (24 kilometers per second).
In this view, infrared light that we can't see with our eyes has been assigned visible colors. Zeta Ophiuchi appears as the bright blue star at center. As it charges through the dust, which appears green, fierce stellar winds push the material into waves. Where the waves are the most compressed, and the warmest, they appear red.

 Bow Shock

This bow shock is analogous to the ripples that precede the bow of a ship as it moves through the water, or the pileup of air ahead of a supersonic airplane that results in a sonic boom.
NASA's Wide-field Infrared Survey Explorer, or WISE, released a similar picture of the same object in 2011. WISE sees infrared light as does Spitzer, but WISE was an all-sky survey designed to take snapshots of the entire sky. Spitzer, by contrast, observes less of the sky, but in more detail.

NASA Space Photos of Zeta Ophiuchi
WISE image of Zeta OPhiuchi



More information and the WISE image can be seen at:
http://www.nasa.gov/mission_pages/WISE/news/wise20110124.html/?rel=muse .
NASA's Jet Propulsion Laboratory, Pasadena, Calif., manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate, Washington. Science operations are conducted at the Spitzer Science Center at the California Institute of Technology in Pasadena. Data are archived at the Infrared Science Archive housed at the Infrared Processing and Analysis Center at Caltech. Caltech manages JPL for NASA.

For more information about Spitzer, visit:http://spitzer.caltech.edu and http://www.nasa.gov/spitzer/?rel=muse .



Credit!
Whitney Clavin
Jet Propulsion Laboratory, Pasadena, Calif.

NASA


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