Stellar evolution and observing the Universe

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Question 27
Easy

Use the table and the Hertzsprung-Russell diagram to answer the question.

Hertzsprung-Russell diagram showing the main sequence line with a point plotted for 61 Cygni A.

StarLuminosity (compared to Sun)Temperature (K)
Vega409,600
Altair107,700
The Sun15,800
61 Cygni A0.15Estimate this value
Proxima Centauri0.00173,000

Estimate the surface temperature of the star 61 Cygni A.

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Stellar evolution and observing the Universe Questions

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