Binary star systems are extremely useful in studying stars because they allow us to determine star
A) temperatures.
B) sizes.
C) masses.
D) distances.
E) spectral types.
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Q41: The figure below shows an H-R diagram,
Q42: Which properties can be plotted on the
Q43: For which type of binary system are
Q44: On a typical H-R diagram, where are
Q45: A star's position in the H-R diagram
Q47: Astronomers can measure the speed of the
Q48: Roughly what percentage of stars in our
Q49: The figure below shows an H-R diagram,
Q50: You discover a binary star system in
Q51: Star X and star Y are 5
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