Multiple Choice
What can be said with certainty about a red star and a blue star?
A) The red star is more massive than the blue star.
B) The blue star is hotter than the red star.
C) The red star has a greater radial velocity than the blue star.
D) The red star is closer to Earth than the blue star.
E) The blue star has a greater proper motion than the red star.
Correct Answer:
Verified
Correct Answer:
Verified
Q124: On the H- R diagram, the bright
Q125: Where on the H- R diagram are
Q126: If two stars have the same parallax,
Q127: A star has a parallax of .05".
Q128: Our Sun lies about the middle of
Q130: Must we see both spectral lines splitting
Q131: If spectroscopic luminosity classification gives us an
Q132: What physical property of a star does
Q133: A star is 10 parsecs from Earth.
Q134: The Sun, at absolute magnitude +4.8, would