Recap: Overview of Stellar Interiors

• non-relativistic vs relativistic
• non-degenerate vs degenerate

Degenerate Stars: White Dwarfs

• non-relativistic degenerate stars
• observed white dwarfs
• Sirius B: optical zoom (HST), X-ray (Chandra)
• white dwarfs in globular cluster M4 and NGC 6397
• relativistic degenerate stars
• Chandrasekhar limit
• white dwarf cooling sequence: Gaia HR diagram, more Gaia white dwarfs