4. Discovering Exoplanets: Hot Jupiters
A. Bartlett Giamatti Professor of Astronomy and Physics
This lecture examines the theory of planetary formation, the application of momentum equations for detecting exoplanets via stellar wobble, and the use of the Doppler shift to characterize objects like 51 Pegasi b and the class of 'Hot Jupiters'.
Frontiers/Controversies in Astrophysics (ASTR 160)
The formation of planets is discussed with a special emphasis on the bodies in the Solar System. Planetary differences between the celestial bodies in the Inner and Outer Solar System are observed. Professor Bailyn explains how the outlook of our Solar System can predict what other star systems may look like. It is demonstrated how momentum equations are applied in astronomers' search for exoplanets. Planet velocities are discussed and compared in relation to a planet's mass. Finally, the Doppler shift is introduced and students learn how it is used to measure the velocity of distant objects, such as galaxies and planets.