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Supernova

Supernova. Ethan Fukuda Cody Tamura Period 1. What is a supernova?. An exploding star reaching the end of its life They emit more energy than the sun will in its lifetime The blast is so bright, it will often outshine a galaxy for up to a couple of months. What is a supernova?.

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Supernova

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  1. Supernova Ethan Fukuda Cody Tamura Period 1

  2. What is a supernova? • An exploding star reaching the end of its life • They emit more energy than the sun will in its lifetime • The blast is so bright, it will often outshine a galaxy for up to a couple of months

  3. What is a supernova? • On average, one will occur every 50 years in a galaxy • In the universe, a star explodes every other second (that’s a lot)

  4. The Sun • The Sun does not have enough mass to turn into a supernova • However, when it runs out of its nuclear fuel, it will turn into a red giant and vaporize anything in its path • Then it will cool to a white dwarf

  5. Types of supernovae • Type I – a star gathers matter from a neighbor star until a nuclear reaction occurs • Type II – a star runs out of nuclear fuel and implodes under its own gravity

  6. Type I • Lack a hydrogen signature in their spectrum of light • Believed to originate from white dwarves • Neighbor stars give off gas that collapses the white dwarf and a nuclear reaction occurs

  7. Type I continued • They lack hydrogen compared to other types of supernovas • They are brighter than type II supernovas • A white dwarf can only support a mass of 1.38 Solar masses, and if it goes above, it will start to collapse than explode • Another way is if a white dwarf combines with another star, which is a very rare event

  8. Type II • Must be several times larger than the Sun • At its death, a star will stratify the elements within itself • They begin to implode • The implosion bounces off the core and creates an explosion

  9. Type II continued • Because of this implosion, type II supernovas are known as core-collapse supernovas • The difference between a type ll supernova and the other types of supernovas, is that hydrogen is present in its spectrum • A type ll supernova is a massive star, which generates energy by nuclear fusion of elements

  10. The Brightest Supernova • It was seen September 2006, ground based telescopes and from NASA’s Chandra X-ray observatory. • This was the biggest and brightest stellar blast ever recorded, and could be a newly discovered type of supernova. • Scientists estimate that the explosion is equal to that of an explosion of a star with 150 times more mass than our sun.

  11. Crab Supernova Video • http://www.youtube.com/watch?v=0J8srN24pSQ

  12. Works Cited • Boyle, Alan. "Scientists Identify Brightest Supernova - Technology & Science - Space - Msnbc.com." Breaking News, Weather, Business, Health, Entertainment, Sports, Politics, Travel, Science, Technology, Local, US & World News - Msnbc.com. Web. 11 Jan. 2011. <http://www.msnbc.msn.com/id/18523377/ns/technology_and_science-space/>. • "Girl Sets Record As Youngest Person To Find Supernova - Space News - RedOrbit." RedOrbit – Science, Space, Technology, Health News and Information. Web. 11 Jan. 2011. <http://www.redorbit.com/news/space/1973783/girl_sets_record_as_youngest_ person_to_find_supernova/index.html>. • "The Terminal Phases of Stellar Evolution and the Supernova Phenomenon." SAO/NASA ADS: ADS Home Page. Web. 11 Jan. 2011. <http://adsabs.harvard.edu/abs/1983ASPRv...2...75I>. • "What Is A Supernova? | Space.com." Space, NASA Information & News | Outer Space Flight Videos & Pictures | Astronomy, Solar System Images | Space.com. Web. 11 Jan. 2011. <http://www.space.com/6638-supernova.html>.

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