The most common kinds of stars in the Galaxy have
A) low luminosity compared to the Sun
B) spectra that show they contain mostly carbon
C) enormous masses compared to the Sun
D) diameters thousands of times greater than the Sun's
E) a dozen or more stars in close orbit around them
Section 18.2: Measuring Stellar Masses
Correct Answer:
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Q2: An H-R Diagram plots the luminosity of
Q3: Why can astronomers not measure the diameters
Q4: Which law do astronomers use to determine
Q5: Stars on the main sequence obey a
Q6: Two stars that are physically associated (move
Q8: Some "superstars" give off more than 50,000
Q9: Which of the following statements about spectroscopic
Q10: Most of the stars we can see
Q11: Which of the following characteristics of a
Q12: For what type of star can astronomers
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