AST101: Life and Death of Stars
Quick-Review Study Notes & Core Concepts
1. Observational Astronomy
The electromagnetic spectrum, telescopes, and light gathering power. Parallax measurements for stellar
distances and the apparent vs. absolute magnitude scales.
2. Stellar Structures
The Hertzsprung-Russell (H-R) diagram plotting luminosity against temperature. Main sequence stars fusing
hydrogen into helium via hydrostatic equilibrium between gravity and radiation pressure.
3. Stellar Endstates
Low-mass star evolution leading to planetary nebulae and white dwarfs. High-mass star evolution culminating
in core-collapse supernovae, leaving behind neutron stars or black holes.
AST101: Life and Death of Stars
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