Ch. 8 – Characterizing Stars part 3: The Hertzsprung-Russell Diagram Luminosity Classes Spectral Types.
1 II-9 Normal Galaxies and Clusters of Galaxies (Main Ref.: Lecture notes; FK 19-5, 23-1 to 3, 5, 6; Box 23-1; CD photos shown in class) (i)Stellar Population.
Classification
Life Cycle of a Star All Stars Begin the Same Way: Before life as a star Nebula A nebula is a cloud of interstellar dust, hydrogen and helium gas,
Classification The difference between a small star and a brown dwarf is fairly clear. If hydrogen fusion is taking place then the object is a dwarf star.
Sci. 4-2 The life Cycle of Stars Pages 105-109. A. New stars form from the material of old stars that have gone through their life cycles.
STARS
