Astronomy 162:
Introduction to Stellar, Galactic, & Extragalactic Astronomy

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Credit: AURA/NOAO

The Structure & Evolution of Stars

In the observed properties of stars, we found interesting trends in Luminosity, Temperature, Radius, and Mass that required explanation. In particular, why does the H-R diagram look the way it does? These trends will be the keys to unlocking the secrets of the inner workings of stars.

We will begin with a discussion of the physics that governs stellar structure, and the means by which stars generate energy to make up for the energy lost by shining. We will then turn to a discussion of the evolution of stars from their formation to their last days.

Lectures

The Internal Structure of Stars (April 12)

The Age of the Sun (April 13)

Energy Generation in Stars (April 14)

Energy Transport in Stars (April 15)

The Main Sequence (April 18)

Evolution of Low Mass Stars (April 19)

The Future of the Sun (April 20)

Review for Exam #2 (April 21)

Evolution of High Mass Stars (April 25)

Notes:

Students wishing to explore some of these topics beyond the lecture and textbook using the Internet might want to look at the relevant Selected Astronomical Internet Links for this unit.