At What Stage of Evolution Are the Stars with Similar

question 177

Multiple Choice

At what stage of evolution are the stars with similar luminosities between 50 and 100 times that of the Sun but spread over a range of temperatures?

• A) main-sequence stage because the horizontal-branch region is part of the main sequence
• B) pre-main-sequence stage, evolving toward the main sequence
• C) white dwarf stage
• D) post-main-sequence stage

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