The Following Expressions Are Parameters of Stars That Astronomers Obtained

question 11

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

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Definitions:

Air Passages

The parts of the respiratory system through which air travels, including the nose, throat (pharynx), windpipe (trachea), and lungs' airways (bronchi).

Aldehyde Dehydrogenase

An enzyme involved in the breakdown of aldehydes into acids, playing a critical role in the metabolism of alcohol in the liver.

Metabolizes Alcohol

The biological process by which the body breaks down alcohol, primarily through the action of the liver enzymes.

Delta Waves

Strong, slow brain waves usually emitted during stage 4 sleep.