ASTR 100Lgx Study Guide - Midterm Guide: Plutino, Photosphere, Moons Of Saturn
Document Summary
Called extra-solar or exo-solar planets, many discovered by kepler mission. We used to think it evolved evolutionarily, then catastrophically, now evolutionarily again. A big ball of gas condensed, heated up, then shot out eddies to make the planets. Sun slowed down from magnetic braking, shooting out volatile ions to jovians. We discover other planets by looking for wobbling stars with doppler shifts. Classified as a g2v star based on surface temps. Average surface temp of 5800 k, 20 times earth"s. It"s a pretty big star, bigger than 95% of nearby stars. The solar constant rate of energy from the sun is 1,380 watts/m2. Luminosity of 3. 9 x 1033 ergs per second, lots of energy going all directions. The surface is broken into convection cells called granules. Has four main layers, getting denser the deeper you go because of differentiation. There"s also a bigger convection pattern called supergranulation. Has limbs at the edge of the visible surface.
