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What is a star & how many different kinds are there?

By: ADRIAN SEAN D. APARILLA Aaron Kyle R. Daug Environmental science Grade 6 - Neil Armstrong. What is a star & how many different kinds are there?. Outline Sean : All A bout stars Classifications History Descriptions Life Cycle Aaron : Types of Stars

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What is a star & how many different kinds are there?

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  1. By: ADRIAN SEAN D. APARILLA Aaron Kyle R. Daug Environmental science Grade 6 - Neil Armstrong What is a star & how many different kinds are there?

  2. Outline • Sean : • All About stars • Classifications • History • Descriptions • Life Cycle • Aaron : • Types of Stars • Definitions for every Star

  3. ALL ABOUT STARS

  4. CLASSIFICATIONS

  5. An easy mnemonic for remembering these is: • O - oh • B - be • A - a • F - fine • G - girl • K - kiss • M - me

  6. HISTORY • Ancient people: quadrant • 1584 : GiordanaBruno • Greek astronomers: Ptolemy and Hipparchus • 20th century

  7. DESCRIPTIONS OF STARS • a luminous globe of gas • nebulae & consist of hydrogen and helium gas • 2000°C to above 30,000°C • brightest stars - 100 times that of the Sun • smallest mass for a star is about 8% that of the Sun

  8. DIFFERENT KINDS OF STAR

  9. The different kinds of stars are: • Yellow dwarf stars • Orange dwarf stars • Red dwarf stars • Brown dwarfs • Blue giant stars • Red giant stars • Red super giant stars • White dwarfs • Black dwarfs • Neutron stars

  10. Yellow Dwarf Stars (the sun, Alpha Centauri A, Kepler-22) • Lifetime: 4 - 17 billion years • Evolution: early, middle • Temperature: 5,000 - 7,300 °C • Spectral Types: G, F • Luminosity: 0.6 - 5.0 • Radius: 0.96 - 1.4 • Mass: 0.8 - 1.4 • Prevalence: 10%

  11. Brown Dwarfs • Lifetime: unknown (long) • Evolution: not evolving • Temperature: 0 - 1,800 °C • Spectral Types: L, T, Y (after M) • Luminosity: ~0.00001 • Radius: 0.06 - 0.12 • Mass: 0.01 - 0.08 • Prevalence: unknown (many)

  12. Orange Dwarf Stars(Alpha Centauri B and Epsilon Eridani) • Lifetime: 17 - 73 billion years • Evolution: early, middle • Temperature: 3,500 - 5,000 °C • Spectral Types: K • Luminosity: 0.08 - 0.6 • Radius: 0.7 - 0.96 • Mass: 0.45 - 0.8 • Prevalence: 11%

  13. Red Dwarf Stars(Proxima Centauri, Barnard's Star and Gliese 581) • Lifetime: 73 - 5500 billion years • Evolution: early, middle • Temperature: 1,800 - 3,500 °C • Spectral Types: M • Luminosity: 0.0001 - 0.08 • Radius: 0.12 - 0.7 • Mass: 0.08 - 0.45 • Prevalence: 73%

  14. Red Supergiant Stars (Betelgeuse and Antares) • Lifetime: 3 - 100 million years • Evolution: late • Temperature: 3,000 - 5,000 ºC • Spectral Types: K, M • Luminosity: 1,000 - 800,000 • Radius: 100 - 1650 • Mass: 10 - 40 • Prevalence: 0.0001%

  15. Blue Giant Stars(Rigel) • Lifetime: 3 - 4,000 million years • Evolution: early, middle • Temperature: 7,300 - 200,000 °C • Spectral Types: O, B, A • Luminosity: 5.0 - 9,000,000 • Radius: 1.4 - 250 • Mass: 1.4 - 265 • Prevalence: 0.7% hubpages.com

  16. Red Giant Stars(Aldebaran and Arcturus) • Lifetime: 0.1 - 2 billion years • Evolution: late • Temperature: 3,000 - 5,000 °C • Spectral Types: M, K • Luminosity: 100 - 1000 • Radius: 20 - 100 • Mass: 0.3 - 10 • Prevalence: 0.4%

  17. White Dwarfs(Sirius B and Van Maanen'sstar) • Lifetime: 1015- 1025 years • Evolution: dead, cooling • Temperature: 4,000 - 150,000 ºC • Spectral Types: D (degenerate) • Luminosity: 0.0001 - 100 • Radius: 0.008 - 0.2 • Mass: 0.1 - 1.4 • Prevalence: 4% hubpages.com

  18. Black Dwarfs • Lifetime: unknown (long) • Evolution: dead • Temperature: < -270 °C • Spectral Types: none • Luminosity: infinitesimal • Radius: 0.008 - 0.2 • Mass: 0.1 - 1.4 • Prevalence: ~0%

  19. Neutron Stars • Lifetime: unknown (long) • Evolution: dead, cooling • Temperature: < 2,000,000 ºC • Spectral Types: D (degenerate) • Luminosity: ~0.000001 • Radius: 5 - 15 km • Mass: 1.4 - 3.2 • Prevalence: 0.7%

  20. References & Sources:> kidsastronomy.com> Wikipedia, the free encyclopedia> en.wikipedia.org> www.space.com> www.universetoday.com> hubpages.com> http://www.universetoday.com/25156/history-of-stars/#ixzz38l9lLV4U> http://planetquest.jpl.nasa.gov/science/science_index.cfm> http://cosmology.carnegiescience.edu/timeline/1838>www.google.com.ph/search?q=LIFE+CYCLES+of+stars+ASTRONOMY&tbm=isch&ei=tTLWU8fhKIL48QWapIFA#facrc=_&imgdii=Uqcwn9o5Dk63TM%3A%3B5i7DEMwbIdTJ8M%3>www.google.com.ph/search?q=description+of+stars+ASTRONOMY&source=lnms&sa=X&ei=icbWU9LqI4yl8AWcgoHQCA&ved=0CAUQ_AUoAA&biw=1280&bih=699&dpr=1

  21. THANK YOU

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