ASTRON C10 Lecture Notes - Lecture 11: Kepler (Spacecraft), 51 Pegasi, 16 Cygni

• School: Berkeley
• Department: Astronomy
• Course: ASTRON C10
• Professor: Alexei Filippenko

Document Summary

Any mass or energy warps the shape of space or the passage of time. Gravity: following its path in space and time. Frequency of gravitational waves increases and amplitude increases: two black holes approach each other, you get a chirp. Page 134-140 in course reader for cheat sheet. Planet and star orbit center of mass. Spread out light from star and see spectra, you can see absorption lines. A star"s reflex motion produces periodic doppler shifts in its spectrum. Many have orbital period that are very close. Doppler wobbler technique works best with large planets. Most stars are (barely) visible to the naked eye. The very small orbits of some planets and high eccentricity of other. Formed and then solarwinds push it outs. When an exoplanet passes between us and the star that it orbits, it dims the light a bit. The bigger the exoplanet in relation to the star, the more light is blocked.