Consider two stars X and Y with surface temperatures of 3000 K and 10,000 K respectively.Which of the following is true?
A)Star X has less hydrogen
B)Star Y has less hydrogen
C)Hydrogen absorption lines will be stronger in star X
D)Hydrogen absorption lines will be stronger in star Y

Question

Quizplus · Accepted Answer

Hotter stars have more ionized hydrogen which causes more absorption, making the hydrogen lines stronger. Hence, star Y with a surface temperature of 10,000 K will have stronger hydrogen absorption lines compared to star X with a surface temperature of 3000 K.

Consider Two Stars X and Y with Surface Temperatures of 3000