Ashes to Ashes, Dust to Dust: Chandra/Spitzer Image

Mar 29, 2010
A composite image from NASA's Chandra (blue) and Spitzer (green and red-yellow) space telescopes shows the dusty remains of a collapsed star, a supernova remnant called G54.1+0.3. Image credit: NASA/CXC/JPL-Caltech/Harvard-Smithsonian CfA

(PhysOrg.com) -- A new image from NASA's Chandra and Spitzer space telescopes shows the dusty remains of a collapsed star. The dust is flying past and engulfing a nearby family of stars.

"Scientists think the stars in the image are part of a stellar cluster in which a exploded," said Tea Temim of the Harvard-Smithsonian Center for Astrophysics, Cambridge, Mass., who led the study. "The material ejected in the explosion is now blowing past these stars at high velocities."

The of G54.1+0.3 is online. It shows the Chandra X-ray Observatory data in blue, and data from the in green (shorter wavelength) and red-yellow (longer). The white source near the center of the image is a dense, rapidly rotating neutron star, or pulsar, left behind after a core-collapse supernova explosion. The pulsar generates a wind of high-energy particles -- seen in the Chandra data -- that expands into the surrounding environment, illuminating the material ejected in the supernova explosion.

The infrared shell that surrounds the pulsar wind is made up of gas and dust that condensed out of debris from the supernova. As the cold dust expands into the surroundings, it is heated and lit up by the stars in the cluster so that it is observable in infrared. The dust closest to the stars is the hottest and is seen glowing in yellow in the image. Some of the dust is also being heated by the expanding pulsar wind as it overtakes the material in the shell.

The unique environment into which this supernova exploded makes it possible for astronomers to observe the condensed dust from the supernova that is usually too cold to emit in infrared. Without the presence of the stellar cluster, it would not be possible to observe this dust until it becomes energized and heated by a shock wave from the supernova. However, the very action of such shock heating would destroy many of the smaller . In G54.1+0.3, astronomers are observing pristine dust before any such destruction.

G54.1+0.3 provides an exciting opportunity for astronomers to study the freshly formed supernova dust before it becomes altered and destroyed by shocks. The nature and quantity of dust produced in supernova explosions is a long-standing mystery, and G54.1+0.3 supplies an important piece to the puzzle.

NASA's Marshall Space Flight Center in Huntsville, Ala., manages the Chandra program for NASA's Science Mission Directorate in Washington. The Smithsonian Astrophysical Observatory controls Chandra's science and flight operations from Cambridge, Mass.

The Spitzer observations were made before the telescope ran out of its coolant in May 2009 and began its "warm" mission. NASA's Jet Propulsion Laboratory in Pasadena, Calif., manages Spitzer for NASA's Science Mission Directorate, Washington. Science operations are conducted at the Spitzer Science Center at the California Institute of Technology in Pasadena. Caltech manages JPL for NASA.

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baudrunner
1 / 5 (1) Mar 30, 2010
Speaking of the Universe, I maintain that the acceleration of the expansion is an illusion, although the farther away objects are the faster they are moving away from us. After all, study the spiral galaxies with their arms unfurling and rotating. Of course the outer bodies are moving away from us because the spiral arms are throwing matter outwards, not just rotating faster for not being closer to the center but farther and farther away, like the velocity of rotation a short distance from the central axis versus that on the outside rim of a wheel. The apparent expansion is the result of red-shift changes relative to distance. When you strike a whip, the amplitude decreases with distance from the source, the hand. Same with frequency redshift. The entire Universe is in motion.

Some day..
omatumr
1 / 5 (3) Mar 30, 2010
Thanks for the story.

Our own solar system was made from the ashes of a precursor star, as shown in tallblokes talkshop: http://tinyurl.com/yaa56v8 or

http://tallbloke....-theory/

With kind regards,
Oliver K. Manuel
Glyndwr
not rated yet Mar 30, 2010
Speaking of the Universe, I maintain that the acceleration of the expansion is an illusion, although the farther away objects are the faster they are moving away from us.


What if the universe is part of infinite cycles? Maybe this notion is dismissed as humans cannot (or yet) comprehend no beggining or end to something

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