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Understanding H-R Diagrams: Local Stars, Supergiants, and Dwarfs in Our Universe

Dive into the fascinating world of the Hertzsprung-Russell (H-R) diagram, which illustrates the relationship between the luminosity, temperature, and types of stars. Explore examples like red supergiants and white dwarfs. A local star map reveals thousands of galaxies, with fascinating statistics such as 15 arcseconds wide visibility. Learn how stars like tennis balls at 100 yards can relate to our cosmic perspective, and how naming a star for someone you love can connect you with the universe.

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Understanding H-R Diagrams: Local Stars, Supergiants, and Dwarfs in Our Universe

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Presentation Transcript

  1. More Star Stuff

  2. H-R Diagram

  3. H-R Diagram

  4. Local Star Map

  5. A Red Supergiant

  6. White Dwarf

  7. Nebula

  8. More Nebula

  9. Luminosity • L ~ R2T 4 • double radius = 4 times more light given off • double temperature = 16 times more light given off

  10. HDF • 15 arcseconds wide • Tennis ball at 100yds • Two millionths of sky • 3000 galaxies • 342 exposures

  11. HDFS

  12. HUDF

  13. Name a Star for Someone You Love • Star Name

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