Lecture 15

Lecture 15 - SUPERNOVAE 1. Type II Supernova o Hydrogen...

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SUPERNOVAE 1. Type II Supernova o Hydrogen within the gas that exploded o Hydrogen emission lines in the spectrum o (red line) o Normal massive star, core collapses, like we learned about earlier 2. Type Ib Supernova o Missing hydrogen o The whole outer layer has already been blown out into space (hydrogen envelope) o Exposed all the way down to the helium that was produced in the nuclear reactions 3. Type Ic Supernova o Both hydrogen AND helium has blown off to expose carbon and oxygen 4. Core Collapse Supernovae o May form into a black hole, but we're not sure o May also be a neutron star we can't see 5. Type Ia Supernova o Physically nothing like type Ib, Ic, and II stars o Low mass stars that leave white dwarfs behind o Eventually buckle and fold when they can't hold anymore- core collapse o Exposed to space, made of dense carbon and oxygen o Heats up- releases energy as it folds inward, eventually carbon begins to burn
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Lecture 15 - SUPERNOVAE 1. Type II Supernova o Hydrogen...

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