Exam-style question
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What does absolute magnitude represent in stellar classification?.
- A.The brightness of a star as seen from Earth
- B.The intrinsic brightness of a star at a distance of 10 parsecs
- C.The brightness of a star adjusted for distance
- D.The brightness of a star in a binary system
Model answer
What a good answer should say
- The intrinsic brightness of a star at a distance of 10 parsecs
Explanation
Why this works
Absolute magnitude defines the intrinsic brightness of a star when viewed from a standard distance of 10 parsecs, allowing for a consistent comparison of stellar brightness regardless of distance from Earth.
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