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Galaxies are the places where gas turns into luminous stars, powered by nuclear reactions that also produce most of the chemical elements. But the gas and stars are only the tip of an iceberg: a galaxy consists mostly of dark matter, which we know only by the pull of its gravity. The ages, chemical composition and motions of the stars we see today, and the shapes that they make up, tell us about each galaxy's past life. This book presents the astrophysics of galaxies since their beginnings in the early Universe. This second Edition is extensively illustrated with the most recent observational data. It includes new sections on galaxy clusters, gamma ray bursts and supermassive black holes. Chapters on the large-scale structure and early galaxies have been thoroughly revised to take into account recent discoveries such as dark energy.
Linda Sparke is a professor of Astronomy at the University of Wisconsin, and a Fellow of the American Physical Society John Gallagher is the W. W. Morgan Professor of Astronomy at the University of Wisconsin
Table of Contents
Mapping our Milky Way
The orbits of the stars
Our backyard: the Local Group
Spiral and SO galaxies
Galaxy groups and clusters
Large-scale distribution of galaxies
Active galactic nuclei and the early history of galaxies
Table of Contents provided by Publisher. All Rights Reserved.