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Lec 6 - Microlensing, Astrometry and Other Methods

"Lec 6 - Microlensing, Astrometry and Other Methods" Frontiers/Controversies in Astrophysics (ASTR 160) The class begins with a discussion on transits important astronomical events that help astronomers to find new planets. The event occurs when a celestial body moves across the face of the star it revolves around and blocks some of its light. By calculating the amount of light that is being obscured astronomers can obtain important information about both star and planet, such as size, density, radial velocity and more. The concept of planetary migration is explained in order to better understand the dramatic differences between bodies in the Inner and Outer Solar System. Finally, potential problems in the Solar System that may occur as a result of migration are addressed. 00:00 - Chapter 1. Complexities and New Observations on Hot Jupiters 07:38 - Chapter 2. Discovery of Planetary Transits 19:53 - Chapter 3. Limits of Finding Planets Directly from Transits 28:54 - Chapter 4. Metallicity and Planetary Migration 43:32 - Chapter 5. Consequences and Limits of the Idea of Planetary Migration Complete course materials are available at the Open Yale Courses website: http://open.yale.edu/courses This course was recorded in Spring 2007.

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Channels: Astrophysics

Tags: 47 Tuc density HD209458 Hubble space telescope metallicity migration

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Duration: 47m 27s

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