AST 101 Lecture Notes - Lecture 28: Neutron Star, Solar Mass, Cosmological Principle
Document Summary
Greater than 8 solar masses you are a high mass star. Got to be less than 5 solar masses to be considered a low mass star, but have to be greater than 0. 08 solar masses. 10 m (circle with a dot in it) msun. Six things we need to know about mass. 4 hydrogen into one helium, get one out. Pushing pressure out while bringing other pressure in. A class of yellow giant pulsating stars. Their pulsation periods range from about one day to about 70 days. With a period of about one day or less. They are named for their prototype star in the constellation, lyrae, rr lyrae. Galaxies: the cosmological principle enables astronomers to generalize from what they observe to the properties of the universe as a whole. The principle states that any and all observers, everywhere in space, should see, one average, the same picture of the universe as us on scales comparable to.
