Multiple Choice
The following expressions are parameters of stars that astronomers obtained from their measurements.Which of these conclusions is obviously NOT correct,based on the positions of these stars on the Hertzsprung-Russell diagram in Figure 10-8 of Comins,Discovering the Essential Universe,6th ed.? (L⊙ and R⊙ are the luminosity and radius of the Sun,respectively.)
A) luminosity = L⊙, radius = R⊙, temperature = 6000 K; conclusion: main-sequence star
B) luminosity = 10⁴ L⊙, radius = 100 R⊙, temperature = 5000 K; conclusion: red giant star
C) luminosity = L⊙, radius = 1/10 R⊙, temperature = 20,000 K; conclusion: white dwarf star
D) luminosity = 1/100 L⊙, radius = 1/100 R⊙, temperature = 20,000 K; conclusion: white dwarf star
Correct Answer:
Verified
Correct Answer:
Verified
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