ASTRON 10 Lecture Notes - Lecture 28: Emission Nebula, Redshift, Bipolar Outflow
Document Summary
Elliptical orbits star is moving fastest in its orbit = closest to the center of gravity star is moving slowest in its orbit = farthest from the center of gravity. Timing allows observer to figure out the shape of the orbit. Primary and secondary star go through their orbits at the same pace i. e. they are closest to the center of mass at the same time. Secondary star eclipsing primary --> small decrease in brightness. Primary star eclipsing secondary --> big decrease in brightness. Rotates around a center of mass between it and the binary star system. Is in a binary system with third star. Its binary system rotates around a center of mass between it and the other binary star system. Rotates around a center of mass between it and the quadruple star system. Most stars are located in groups or pairs (only the sun is isolated)
