Physics 231: Section 4 Stellar Evolution 1Phys 231, Topic 4: Stellar Evolution

The Milky Way at 21 cm Phys 231, Topic 4: Stellar Evolution2 Map of neutral hydrogen (e.g. H I Clouds).

Molecular Clouds Phys 231, Topic 4: Stellar Evolution3 The Horsehead (IC434) Nebula, part of the Orion complex. Note that these are most easily seen as absorption.

H II Regions Phys 231, Topic 4: Stellar Evolution4 M8, the “Lagoon Nebula.”

The formation of the sun Phys 231, Topic 4: Stellar Evolution5

The Orion Nebula Phys 231, Topic 4: Stellar Evolution6

Evolution of the Sun Phys 231, Topic 4: Stellar Evolution7

The Structure of a Red Giant Phys 231, Topic 4: Stellar Evolution8

Horizontal Branch Star Phys 231, Topic 4: Stellar Evolution9

Asymptotic Giant Branch Star Phys 231, Topic 4: Stellar Evolution10

The Planetary Nebula NGC 6720 Phys 231, Topic 4: Stellar Evolution11

Liouville’s Theorem Phys 231, Topic 4: Stellar Evolution12

Evolution of high mass stars Phys 231, Topic 4: Stellar Evolution13

The “onion-skin” model Phys 231, Topic 4: Stellar Evolution14

Supernova 1987A Phys 231, Topic 4: Stellar Evolution15 BeforeAfter

Pulsars Phys 231, Topic 4: Stellar Evolution16