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Chapters 10 and 11 The Sun & the Characterizing Stars

Chapters 10 and 11 The Sun & the Characterizing Stars. “We are star stuff”. - Carl Sagan. Kelvin Temperature Scale. Kelvin Temperature = _______ Temperature + _____. The Sun and other stars are huge and massive!!!. Sunspots. regions of the solar surface that

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Chapters 10 and 11 The Sun & the Characterizing Stars

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  1. Chapters 10 and 11The Sun & the Characterizing Stars

  2. “We are star stuff” - Carl Sagan

  3. Kelvin Temperature Scale Kelvin Temperature = _______ Temperature + _____

  4. The Sun and other stars are huge and massive!!!

  5. Sunspots • regions of the solar surface that • is dark and relatively cool • appear dark because they give • off less radiation per unit area • than the photosphere that • surrounds them • can use sunspots to determine • the Sun’s period of rotation

  6. Sunspot Cycle Minimum number Maximum number

  7. Babcock’s Magnetic Dynamo Theory

  8. Solar magnetic fields also create other atmospheric phenomena

  9. Binary Stars ___________: multiple systems bound by gravity and orbiting each other around their center of mass (___________)

  10. Contact Binary Stars

  11. Star Clusters

  12. Star Clusters ________________ _____________ • closely packed toward • toward the center • shaped like a ball • all are old stars • 10,000-1,000,000 stars • located in the galactic • halo • loose grouping of stars • irregular shape • composed predominantly of young stars • hundreds of stars • located in the plane of the Milky Way

  13. Open or Globular Cluster?

  14. The orbital motion of binary stars affects the ___________ of their spectral lines

  15. Some binary stars ________ each other

  16. Colors and Temperatures A star’s color reveals its surface ____________

  17. The Spectral Type of Stars • stars are classified by their spectral types: • _____________ to ___________ • ______________ to ____________ • An important sequence to remember: • Oh Be a Fine Guy (or Girl), Kiss Me

  18. Stars are classified by their spectra as O, B, A, F,G, K, and M spectral types

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