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Digital Demo Room Stellar Structure and Evolution

Digital Demo Room Stellar Structure and Evolution. By Jake Simon and Charles Hansen Supervised by Professor Charles Gammie and Graduate Student Eric Engelhard The DDR-SSE Website http://rainman.physics.uiuc.edu/ddr/stellar. Overview. Purpose Hertzsprung-Russell diagrams Movie format

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Digital Demo Room Stellar Structure and Evolution

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  1. Digital Demo RoomStellar Structure and Evolution By Jake Simon and Charles Hansen Supervised by Professor Charles Gammie and Graduate Student Eric Engelhard The DDR-SSE Website http://rainman.physics.uiuc.edu/ddr/stellar

  2. Overview • Purpose • Hertzsprung-Russell diagrams • Movie format • Stellar evolution • Initial mass function

  3. Purpose • Visualize stellar evolution • Animated Hertzsprung-Russell diagram • Accurate physics • Education • To use in classrooms • Customizable from web • Different complexity levels for different education levels

  4. Hertzsprung-Russell Diagrams • Luminosity vs. surface temperature • Main sequence (blue) • Red giant and supergiant (red) • White dwarf (white) or neutron star (shaded) or black hole Log(L) Log(T) HR Diagram with star types indicated

  5. Movie Format • Animated HR diagrams • Limits of graph • Surface temperature: 10^(2.9) – 10^(4.9) K • Luminosity: 10^(-5) – 10^(6.2) Lo • Star color • Single star • Radius • Rotation

  6. Life of Stars • Main sequence • Hertzsprung gap or subgiant branch • Giant branch • Horizontal branch • Asymptotic giant branch

  7. Death of Stars • Planetary Nebulae (mass < 8 Mo) • Helium white dwarfs • Carbon/Oxygen white dwarfs • Supernovae (mass > 8 Mo) • Neutron stars • Black holes

  8. Initial Mass Function

  9. Summary • Educational simulation • Animated HR diagram • Surface temperature, luminosity, radius, rotation • Visualizes stages of stellar evolution

  10. Questions or Comments? Contact Information Charles Hansen – chansen@uiuc.edu Jake Simon – jbsimon@uiuc.edu Professor Gammie – 235 LLP

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