ASTR 1103 Lecture Notes - Lecture 9: Triple-Alpha Process, Nuclear Fusion, Super Giant
9 Feb 2020
School
Department
Course
Professor
Document Summary
Lecture 9: nova an apparently new star in the sky, is produced by an eruption around a stellar remnant, supernova a particularly luminous and long-lasting nova is caused by the violent, explosive death of a star. 10 100 times the diameter of the sun: super giant star exceptionally luminous star whose diameter is 100 1000 times that of the sun. Helium fusion: at 100 million k, the helium core begins fusing into carbon, horizontal branch the location in the hr diagram of giant stars that are fusing helium. Star clusters and the evidence of evolution: star clusters are groups of stars formed from the same cloud of gas, they are the same age and composition, they have different masses. 3 key points about star clusters: there are two kinds of star clusters, open clusters, globular clusters, you can estimate the age of a cluster, you can visualize star evolution.
