The sketch below shows groups of stars on the H-R diagram labeled (a)through (e).Note that (a)represents the entire main sequence while (c)and (d)represent only small parts of the main sequence.

-Which group represents stars that are extremely bright and emit most of their radiation as ultraviolet light?

Question

The sketch below shows groups of stars on the H-R diagram labeled (a)through (e).Note that (a)represents the entire main sequence while (c)and (d)represent only small parts of the main sequence.
 
-Which group represents stars that are extremely bright and emit most of their radiation as ultraviolet light?

Quizplus · Accepted Answer

Stars that are extremely bright and emit most of their radiation as ultraviolet light are typically hot, massive stars, often found in the upper left of the Hertzsprung-Russell diagram, which corresponds to group C.

The Sketch Below Shows Groups of Stars on the H-R