Galaxy Formation and Evolution

Description

An Astronomical Life – Observing the Depths of the Universe” Though science as a subject can be di?cult, what has been more important for me is that its practice can also be rewarding fun! This book is crafted to expose the reader to the excitement of modern observational cosmology through the study of galaxy evolution over space and cosmic time. Recent extragalactic research has led to many rapid advances in the ?eld. Even a suitable skeptic of certain pronouncements about the age and structure of the Universe should be pleased with the large steps that have been taken in furthering our understanding of the Universe since the early 1990’s. My personal involvement in galaxy research goes back to the 1960’s. At that point, galaxies were easily recognized and partially understood as organized c- lections of stars and gas. What their masses were presented a problem, which I supposed would just fade away. But fade it didn’t. Distant active nuclei and quasars were discovered in the mid-1960’s. A c- mon view of QSOs was that they have large redshifts, but what use are they for cosmology or normal galaxy astrophysics? I shared that conclusion. My expec- tions fell below their potential utility. In short, the Universe of our expectations rarely matches the Universe as it is discovered. Taking the Measure of the Low-Redshift Universe....Pages 1-35 Which Properties of Galaxies can Likely Evolve (and be Measured)?....Pages 37-50 Observations of an Evolving Universe....Pages 51-111 Galaxies at the Contemporary Limits....Pages 113-139 Observational Cosmology....Pages 141-165 Astronomical Instrumentation of the Future....Pages 167-181 Briefly: Some Overall Conclusions and Problems....Pages 183-191