Question

What stages of development are represented by the Group 2 and Group 3 stars? Describe these

groups in terms of their relative age, size, brightness, and temperature

Answer 1

Group 2 stars are older, smaller, fainter, and cooler than Group 3 stars. Group 3 stars are younger, larger, brighter, and hotter than Group 2 stars.

Step-by-step explanation:

The Group 2 and Group 3 stars represent different stages of stellar development. Group 2 stars are more evolved than Group 3 stars.

Group 2 stars, also known as population II stars, are older and have lower heavy-element abundances compared to Group 3 stars, which are known as population I stars. They are typically smaller, fainter, and cooler than Group 3 stars.

On the other hand, Group 3 stars, or population I stars, are younger and have higher heavy-element abundances. They are usually larger, brighter, and hotter than Group 2 stars.