Author Question: Stars evolve to the upper left along the main sequence, after forming in the middle. Indicate ... (Read 40 times)

Arii_bell · **on:** Jul 27, 2018

Stars evolve to the upper left along the main sequence, after forming in the middle.

Indicate whether the statement is true or false

Question 2

The region on the H-R diagram where pulsating variables occur is called the:

A) period-luminosity relation.
B) mass-luminosity relation.
C) instability strip.
D) horizontal branch.
E) main sequence appendix.