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||This media file has been nominated for deletion since 17 January 2012. To discuss it, please visit the nomination page.
Do not remove this tag until the deletion nomination is closed.
Reason for the nomination: see http://www.noao.edu/image_gallery/copyright.html
English: This composite X-ray (red and green)/optical (blue) image reveals a cat-shaped image produced by the remnants of two exploded stars in the Large Magellanic Cloud galaxy. Although the shells of hot gas appear to be colliding, this may be an illusion.
Chandra X-ray spectra show that the hot gas shell on the upper left contains considerably more iron than the one on the lower right. The high abundance of iron implies that this supernova remnant is the product of a Type Ia supernova triggered by the infall of matter from a companion star onto a white dwarf star.In contrast, the much lower abundance of iron in the lower supernova remnant indicates that it was a Type II supernova produced by the explosion of a young, massive star. It takes billions of years to form a white dwarf star, whereas a massive young star will explode in a few million years. The disparity of ages in the progenitor stars means that it is very unlikely that they exploded very close to each other. The apparent proximity of the remnants is probably the result of a chance alignment.
|Date||15 November 2005|
|Source||CHANDRA X-ray Observatory CXC Operated for NASA by SAO, url=http://chandra.harvard.edu/photo/2005/d316/|
|Author||X-ray: NASA/CXC/U.Illinois/R.Williams & Y.-H.Chu; Optical: NOAO/CTIO/U.Illinois/R.Williams & MCELS coll.|
(Reusing this file)
Images from NASA usually are free of copyright.
Image is 5.7 arcmin across. RA 05h 47m 15.00s | Dec -69º 42' 25.00" in Dorado. Observation date: 27 July 2002. Color code: X-ray (Red 0.8-1.5 keV, Green 1.5-8 keV, Blue 0.3-8 keV); Optical (Purple). Instrument: ACIS. Aka: WCD97 Shell A, WCD97 Shell B. Ref: R. Williams & Y.-H. Chu, astro-ph/0509696.
|This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
|Orientation of image||1|
|Image resolution in width direction||72|
|Image resolution in height direction||72|
|Unit of X and Y resolution||2|
|Color space information||1|
|Exif image width||420|
|Exif image length||366|
|Software used||Adobe Photoshop CS3 Windows|
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