Question

How do the stars at each end of the diagonal line on the HR diagram compare to each other (select all that apply)?

a) They have the same temperature.
b) They have the same luminosity.
c) They have different colors.
d) They are both main sequence stars.

Answer 1

The stars at each end of the diagonal line on the HR diagram have different temperatures and may have similar luminosities. They are both main sequence stars and may have different colors.

Step-by-step explanation:

On the H-R diagram, the stars at each end of the diagonal line are different in temperature, but they may have similar luminosities.

The stars on the H-R diagram are clustered into certain parts, and the majority of them fall on the main sequence, which represents the relationship between temperature and luminosity followed by most stars. Therefore, the stars at each end of the diagonal line are both main sequence stars.

However, the stars may have different colors due to their temperatures. Hotter stars have bluer colors, while cooler stars have redder colors.