Question

(05.03 mc)
for stars in the main sequence, which color of stars tend to have higher absolute brightness?

Explanation:

On the provided Hertzsprung-Russell (H-R) diagram, the main sequence shows an inverse relationship between surface temperature (linked to star color) and absolute brightness: higher surface temperature (hotter stars) corresponds to lower absolute brightness values (which mean brighter stars, since the scale is inverted, with -10 being brighter than +15). Hotter main sequence stars appear blue, while cooler ones are red. Following the main sequence trend, stars with the highest surface temperature (blue stars) have the highest absolute brightness.

Answer:

Blue (hot, high-temperature) main sequence stars tend to have higher absolute brightness.