Slide 1 Nucleosynthesis8/21/12 How did the various nuclides originate? What determines their abundance? When were the elements created? Lecture outline: 1)The age of the…

Slide 1 STARS & THEIR EVOLUTION Slide 2 Star Dust & Elements About 4 and a half billions years ago something interesting happened in an out- of-the-way part of the…

Slide 1 Post Main Sequence Evolution of “Low-Mass” Stars Chapter 19 (and some of 20) 1 Slide 2 Key points Late stages of evolution: Red Giants, Horizontal Branch Stars,…

Slide 1 Black Holes Astronomy 315 Professor Lee Carkner Lecture 16 Slide 2 Relativity   Relativity asks the question:  How do physical phenomena depend on the observer’s…

Slide 1 Life as a Low-Mass Star What are the life stages of a low-mass star? How does a low-mass star die? Slide 2 Before we begin lets have some revision questions on how…

Slide 1 Chapter 12 Stellar Evolution Slide 2 Units of Chapter 12 Leaving the Main Sequence Evolution of a Sun-like Star The Death of a Low-Mass Star Evolution of Stars More…

Slide 1 Chapter 20 Stellar Evolution Slide 2 20.1Leaving the Main Sequence 20.2Evolution of a Sun-Like Star The CNO Cycle 20.3The Death of a Low-Mass Star Learning Astronomy…

Slide 1 Life Track After Main Sequence Observations of star clusters show that a star becomes larger, redder, and more luminous after its time on the main sequence is over.…

Slide 1 TOPIC: Astronomy AIM: What are stars? Slide 2 Star Ball of gases that gives off light and heat Slide 3 The Big Bang Theory Universe began with a giant explosion 13…

How Stars Evolve Pressure and temperature Normal gases Degenerate gases The fate of the Sun Red giant phase Horizontal branch Asymptotic branch Planetary nebula White dwarf…