File:Evolved star fusion shells.png

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Evolved_star_fusion_shells.png ‎(499 × 499 pixels, file size: 26 KB, MIME type: image/png)


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Summary

Description This diagram shows a simplified (and not to scale) cross-section of a massive, evolved star (with a mass greater than eight times the Sun.) Where the pressure and temperature permit, concentric shells of Hydrogen (H), Helium (He), Carbon (C), Neon/Magnesium (Ne), Oxygen (O) and Silicon (Si) plasma are burning inside the star. The resulting fusion by-products rain down upon the next lower layer, building up the shell below. As a result of Silicon fusion, an inert core of Iron (Fe) plasma is steadily building up at the center. Once this core reaches the Chandrasekhar mass, the iron can no longer sustain its own mass and it undergoes a collapse. This can result in a supernova explosion.
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Author R. J. Hall
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inception

18 December 2006

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Date/TimeThumbnailDimensionsUserComment
current01:51, 10 May 2020Thumbnail for version as of 01:51, 10 May 2020499 × 499 (26 KB)TSamuelBetter compression
10:03, 24 January 2007Thumbnail for version as of 10:03, 24 January 2007499 × 499 (87 KB)Pngbotoptimized with optipng
16:25, 18 December 2006Thumbnail for version as of 16:25, 18 December 2006499 × 499 (105 KB)RJHallThe onion-like layars of a massive, evolved star just prior to core collapse.

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