7. Direct Imaging of Exoplanets
Μεταφορτώθηκε στις 29 Σεπ 2008
Frontiers/Controversies in Astrophysics (ASTR 160)
Class
begins with a problem on transits and learning what information
astronomers obtain through observing them. For example, radii of stars
can be estimated. Furthermore, applying the Doppler shift method, one
can find the mass of a star. Finally, a star's density can be
calculated. A second method for identifying planets around stars is
introduced: the astrometry method. The method allows for an extremely
accurate assessment of a star's precise position in the sky. Special
features of the astrometry method are discussed and a number of problems
are solved. A short summary is given on the three methods astronomers
use to identify exoplanets. Class ends with an overview of upcoming
space missions and the hope of detecting the presence of biological
activity on other planet.
00:00 - Chapter 1. Calculating Planetary Density from Transits and Doppler Shifts
09:14 - Chapter 2. Astrometry to Assess Planetary Position
23:55 - Chapter 3. Summary of Planetary Identification Methods
34:12 - Chapter 4. Kepler, SIM, and TPF
Complete course materials are available at the Open Yale Courses website: http://open.yale.edu/courses
This course was recorded in Spring 2007.
Class
begins with a problem on transits and learning what information
astronomers obtain through observing them. For example, radii of stars
can be estimated. Furthermore, applying the Doppler shift method, one
can find the mass of a star. Finally, a star's density can be
calculated. A second method for identifying planets around stars is
introduced: the astrometry method. The method allows for an extremely
accurate assessment of a star's precise position in the sky. Special
features of the astrometry method are discussed and a number of problems
are solved. A short summary is given on the three methods astronomers
use to identify exoplanets. Class ends with an overview of upcoming
space missions and the hope of detecting the presence of biological
activity on other planet.
00:00 - Chapter 1. Calculating Planetary Density from Transits and Doppler Shifts
09:14 - Chapter 2. Astrometry to Assess Planetary Position
23:55 - Chapter 3. Summary of Planetary Identification Methods
34:12 - Chapter 4. Kepler, SIM, and TPF
Complete course materials are available at the Open Yale Courses website: http://open.yale.edu/courses
This course was recorded in Spring 2007.
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 20/3/2014
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