01:750:109 Lecture Notes - Lecture 27: Hot Jupiter, Planetary Migration, List Of Multiplanetary Systems
12 Dec 2018
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Chapter 4, 5, 6, 7 - test (jovian and terrestrial planets + comets, meteors, asteroids, etc. ) Change in spectrum during a transit tells us about the composition of a planet"s atmosphere. Presence of different spectrum in the light of the star. Enable direct special techniques like adaptive optics are helping to planet detection. Techniques that help block the bright light from stars are also helping us to find planets around them. Most of the detected planets have orbits smaller than jupiter"s. But many are as massive or bigger as/than jupiter (but not most) Planets with smaller masses are harder to detect with the doppler technique, but can be seen from transit (many smaller planets have been found) Not what we expect from the nebular theory. Planets at greater distances are harder to detect with the doppler technique. Orbits of some extrasolar planets are much more elongated (have a greater eccentricity) than those in our solar system.
