Stars from adolescence to old age

OpenStax

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Evolution from the main sequence to red giants

Checking out the theory

1 Learning objectives

2 H–r diagrams of young clusters

3 H–r diagrams of older clusters

4 Key concepts and summary

Further evolution of stars

1 Learning objectives

2 Helium fusion

3 Becoming a giant again

4 Mass loss from red-giant stars and the formation of planetary nebulae

5 Cosmic recycling

6 Key concepts and summary

The evolution of more massive stars

1 Learning objectives

2 Making new elements in massive stars

3 Elements in globular clusters and open clusters are not the same

4 Approaching death

5 Key concepts and summary

6 For further exploration

10 Collaborative group activities

11 Thought questions

12 Figuring for yourself

Source: OpenStax, Astronomy. OpenStax CNX. Apr 12, 2017 Download for free at http://cnx.org/content/col11992/1.13

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