What is the monolithic collapse hypothesis unable to explain?
A) The randomly oriented, elongated orbits of stars in the bulge and halo
B) The circular motion of stars in the galactic disk
C) The difference in metallicity between the spherical component and the disk component of the galaxy
D) The elongated bar shape of the central bulge
E) The low density of material in the halo, compared to the central bulge
Correct Answer:
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Q42: Match the regions of the galaxy listed
Q43: Galactic fountains are an important way to
Q44: Match the regions of the galaxy listed
Q45: Describe the general features of the monolithic
Q46: A partial, or detached, segment of a
Q48: How have astronomers determined the mass of
Q49: What observed feature of the Milky Way
Q50: Which statement about stellar populations is correct?
A)
Q51: Elements above hydrogen and helium come from
Q52: A "galactic fountain" is _.
A) a stream
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