A star's luminosity is the
A) apparent brightness of the star in our sky.
B) surface temperature of the star.
C) lifetime of the star.
D) total amount of energy that the star will radiate over its entire lifetime.
E) total amount of energy that the star radiates each second.
Correct Answer:
Verified
Q5: Which of the following statements about spectral
Q6: You see two main-sequence stars with the
Q7: Which of the following statements about apparent
Q7: The spectral sequence sorts stars according to
A)mass.
B)surface
Q8: You measure the parallax angle for a
Q9: What are the standard units for luminosity?
A)
Q13: Which stellar spectral type has strong molecular
Q13: Since all stars begin their lives with
Q14: The most distant stars we can measure
Q15: You measure the parallax angle for a
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