Introduction to Astrophysics 

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Week 1:

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** Video 1.1: (23:00 min)

- Parallaxes and Parsec

- General Introduction

- Mass and Distance scales

** Video 1.2: (14:42 min)

- Kepler's Laws

** Vidéo 1.3: (11:58 min)

- Virial Theorem

- Potential Energy of a Sphere

** Vidéo 1.4: (4:38 min)

- Numerical Illustrations of Virial Theorem

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Week 2:

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** Video 2.1: (23:55 min)

- Radiation processes in Astrophysics

- Line and Continuum Radiation

- Examples of Spectra

- Radiated Energy and Units

- Radiation Pressure

- Bremsstrahlung and Synchrotron Radiations

** Video 2.2: (20:15)

- Black Body Radiation

- Total Luminosity (sigma T^4)

- Wien's Law

- Atomic Emission Lines

- The Case of Hydrogen

** Video 2.3: (21:00)

- How to Measure Radiation

- Flux, Luminosity, Filters

- Illustration: How do we Make True Color Images?

- Magnitudes

- Color of Celestial Bodies

- Distance Modulus

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Week 3:

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** Video 3.1: (23:44)

- Doppler Effect

- Doppled Measurement

- Stellar Rotation

- Exoplanets and Stellar Radial Velocities

- Hubble Law

** Video 3.2: (32:22)

- Interstellar Medium

- Nebular Emission, Stromgroen Sphere

- Absorption, diffusion (Mie et Rayleigh)

- Optical Depth

- Redening

** Video 3.3: (18:12)

- Tidal Forces

- Influence on Moon-Earth Distance

- Distance to the Moon Using Laser Measurements

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Week 4:

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** Video 4.1: (12:14)

- Roche Limit

- Example of Saturn's Rings

- Example of a Comet Disrupted by Jupiter's Tidal Forces

** Vidéo 4.2 (13:43)

- Cometary Tails and Radiation Pressure

** Video 4.3: (15:08)

- Energy Balance

- Global Warming

** Video 4.4:

- Planetary Atmospheres

- Hydrostatic Equilibrium

- Atmospheric height-scale

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Week 5:

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** Video 5.1:

- Stellar Formation

- Free-fall Time

- Jeans' Mass and radius

- Kelvin-Helmholtz Time

- Stellar Energy Balance

** Video 5.2:

- HR Diagram

- Spectral Classification

- Effect of Redening

- Radius-Luminosiy Relation

** Video 5.3:

- Stellar Evolution in the HR Diagram

- Stellar Deaths

- Supernovae, Planetary Nebulae, White Dwarfs, Neutron Stars

- Age of Stellar Clusters

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Week 6:

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** Video 6.1:

- Galaxies: General Description

- Morphological Classification

** Video 6.2:

- Numerical Illustrations

** Video 6.3

- The Milky-Way

- Oort Constants and Galactic Motion

** Video 6.4:

- Rotation Curves of Spiral Galaxies

- Elliptical galaxies and the Virial Theorem

- Galaxy Clusters

- Dark Matter

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Week 7:

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** Video 7.1:

- Big Bang: Basic Presentation

- Hubble Expansion

- Cosmological Redshift

- Cosmic Background Radiation

** Video 7.2:

- Distance Ladder

- Hubble Diagram

- Cepheides as Distance Indicators

- Supernovae as Distance Indicators

** Video 7.3:

- Gravitational Lenses

- Deflection Angle

- Properties of Gravitational Lenses

- Light (apparent) Magnification

- Einstein Radius

- Caustics and Critical Lines

** Complementary video on time delays in gravitationally lensed quasars an cosmologocal applications.