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Home Q & A Board Science-Related Homework Help Physics Astronomy
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RUNNER84 RUNNER84
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6 years ago
Which of the following is not a characteristic of the stars of the disk component of our galaxy?
 
  a. circular orbits
  b. randomly inclined orbits
  c. higher metal abundance
  d. young stars
  e. star-formation regions

Question 2

How can we be certain that white dwarfs are very small?
 
  What will be an ideal response?

Question 3

Who first used RR Lyrae variable stars to determine distances in our Milky Way galaxy?
 
  a. Henrietta Leavitt
  b. Edwin Hubble
  c. John Glenn
  d. Carl Sagan
  e. Harlow Shapley

Question 4

How does the luminosity depend on temperature for stars of the same size?
 
  What will be an ideal response?

Question 5

Who first determined that the energy/s emitted by (luminosity of) Cepheid variable stars is larger the longer their period of variation is?
 
  a. Henrietta Leavitt
  b. Edwin Hubble
  c. John Glenn
  d. Carl Sagan
  e. Harlow Shapley

Question 6

How does an H-R diagram make it clear that giant stars are larger than main-sequence stars of the same temperature?
 
  What will be an ideal response?
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dindsidindsi
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6 years ago
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RUNNER84 Author
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6 years ago
Good timing, thanks!
gmiannotti
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Yesterday
this is exactly what I needed
kriggs62
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2 hours ago
Thanks
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