One Key Difference That Astronomers Use to Distinguish Between Brown

question 16

Multiple Choice

One key difference that astronomers use to distinguish between brown dwarfs and high-mass planets is that:

• A) brown dwarfs are all much larger in diameter than any planets
• B) brown dwarfs shine quite brightly in visible light, while planets are only visible from the light they reflect
• C) brown dwarfs are able to do deuterium fusion in their cores, while planets can't
• D) brown dwarfs are much lower in mass than planets like Jupiter
• E) brown dwarfs have a much lower luminosity than any planets
• Section 17.4: Using Spectra to Measure Stellar Radius, Composition, and Motion

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