Astronomy 10 11.13.06 - Astronomy 10 Stellar Evolution I...

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Astronomy 10 Stellar Evolution I 11/13/06 White Dwarfs: o Some stars are so massive that they condense Carbon until the core has a core of solid diamond o Even bigger stars fuse Carbon into Neon 20 o Even bigger stars will fuse the Neon 20 into Oxygen 16 o Even bigger stars will fuse and Oxygen into Silicon 28 o These stars will turn the Silicon 28 into Iron 56 Hydrogen, Helium, and a little Lithium were formed in the big bang and flung around by the big bang Carbon, Neon, Oxygen, Magnesium, Silicon, and Iron were formed in Red Giants and were flung around my stellar winds and Supernovae More of those plus others were formed in Supernovae and were flung around my Supernovae Iron 56 is the nucleus that is densest o So dense that you cannot fuse it and cannot go under fission o Once a Star has built up a star of Iron 56 it cannot generate any more energy by any means o You have no radiation because there is no more energy being produced o
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