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Type I Supernova

Type I Supernova. Bevi Wallenstein. What does the word mean?. Nova means "new" in Latin, which is referring to very vivid new star in the sky

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Type I Supernova

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  1. Type I Supernova Bevi Wallenstein

  2. What does the word mean? • Nova means "new" in Latin, which is referring to very vivid new star in the sky • The prefix super, lets us know that we are talking about supernova, not ordinary novae (which is a star increasing in brightness, but not as much, and by different means) • The word supernova was first used in print in 1926

  3. What is a Supernova? • A supernova occurs at the end of a stars lifetime • The stars nuclear fuel is worn out and it is not supported by the release of nuclear energy any longer • During this short interval, a supernova can radiate as much energy as the Sun could emit over its life span

  4. What does a Supernova look like? • The explosion is extremely luminous and sends out bursts of radiation that often briefly outshine an entire galaxy • Fades from view over several weeks or months

  5. What we can see • Supernovas can be seen in other galaxies • Quite rare in our galaxy • The last supernova in our galaxy was Kepler's star in 1604 • A famous remnant of one was the Crab Nebula which exploded in 1054

  6. The difference between type I and type II • Type I: The explosion comes from sudden fusion on its surfaceType II: The explosion comes from collapse of the core • Type I: The star is completely destroyedType II: The core remains unbroken as a neutron star or black hole

  7. The difference between type I and type II (CONTINUED) • Type I: The mass and brightness is the consistent for each oneType II: The mass and brightness vary over a wide range • Type I: Occurs in a white dwarfType II: Occurs in a giant star just after the main sequence but before becoming a stellar remnant

  8. Type Ia, Ib, and Ic • Type Ia: Lacks hydrogen lines • Type Ib: Non-ionized helium lines • Type Ic: Weak or no helium lines

  9. Other facts • Solitary stars with a mass lower then 9 times the sun, turn into white dwarfs stars without ever becoming supernovae • The growing shock waves from supernova explosions can set off the creation of new stars

  10. WorksCited • http://imagine.gsfc.nasa.gov/docs/teachers/lessons/xray_spectra/background-lifecycles.html • http://www.flickr.com/photos/smithsonian/2941498208/ • http://heasarc.gsfc.nasa.gov/docs/snr.html • http://en.wikipedia.org/wiki/Supernova#Type_Ia

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