Galaxies - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Galaxies write by Francoise Combes. This book was released on 2021-03-05. Galaxies available in PDF, EPUB and Kindle. Galaxies are vast ensembles of stars, gas and dust, embedded in dark matter halos. They are the basic building blocks of the Universe, gathered in groups, clusters and super-clusters. They exist in many forms, either as spheroids or disks. Classifications, such as the Hubble sequence (based on mass concentration and gas fraction) and the colormagnitude diagram (which separates a blue cloud from a red sequence) help to understand their formation and evolution. Galaxies spend a large part of their lives in the blue cloud, forming stars as spiral or dwarf galaxies. Then, via a mechanism that is still unclear, they stop forming stars and quietly end in the red sequence, as spheroids. This transformation may be due to galaxy interactions, or because of the feedback of active nuclei, through the energy released by their central super-massive black holes. These mechanisms could explain the history of cosmic star formation, the rate of which was far greater in the first half of the UniverseÂs life. Galaxies delves into all of these surrounding subjects in six chapters written by dedicated, specialist astronomers and researchers in the field, from their numerical simulations to their evolutions.
Galaxy Formation and Evolution
Galaxy Formation and Evolution - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Galaxy Formation and Evolution write by Houjun Mo. This book was released on 2010-05-20. Galaxy Formation and Evolution available in PDF, EPUB and Kindle. A coherent introduction for researchers in astronomy, particle physics, and cosmology on the formation and evolution of galaxies.
The Origin and Evolution of Galaxies
The Origin and Evolution of Galaxies - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook The Origin and Evolution of Galaxies write by J.T. Jones. This book was released on 2012-12-06. The Origin and Evolution of Galaxies available in PDF, EPUB and Kindle. The Origin and Evolution of Galaxies is the outstanding problem of modern cosmology. Fortunately. we have a firm cosmological framework on which to base our theories (the hot big bang) and recently there has been substantial progress in providing observations which potentially can constrain these theories. The problem of galaxy formation is. as a consequence. one involving many diverse branches of physics and astrophysics. It has been the aim of the school. and this compendium of lectures and seminars. to bring together these diverse aspects at a level enabling research workers to understand what is going on in other corners of the subject and to see how progress in each area impinges on the others. We are grateful to the contributors to this volume for allowing us considerable editorial license with their articles. We have attempted to provide a representative sample of the talks that were given at the school besides the texts of the invited lecturers. It is regrettable that for reasons of space we have had to leave out a number of other contributions.
The Structure and Evolution of Galaxies
The Structure and Evolution of Galaxies - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook The Structure and Evolution of Galaxies write by Steve Phillipps. This book was released on 2005-06-17. The Structure and Evolution of Galaxies available in PDF, EPUB and Kindle. The Structure and Evolution of Galaxies is a concise introduction to this fascinating subject providing the reader with the fundamentals in a clear and accessible style. This user-friendly text assumes some prerequisite knowledge of astronomy, with the necessary mathematics kept to a minimum. Beginning with an introduction to the existence of our own external galaxies, the book moves on to discuss how perceptions of galaxy development have changed over time. The three categories of galaxies are then discussed with later chapters considering their formation and evolution. The book concludes with an overview of both current developments in the field and considers the direction of future research. Clear and accessible introduction to this dynamic subject Introduces definitions of key terms and puts them in context Includes current research and future developments in the field Appendix of basic definitions to clarify key concepts An invaluable text for students of astronomy and physics
Chemical Evolution of Galaxies
Chemical Evolution of Galaxies - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Chemical Evolution of Galaxies write by Francesca Matteucci. This book was released on 2012-01-05. Chemical Evolution of Galaxies available in PDF, EPUB and Kindle. The term “chemical evolution of galaxies” refers to the evolution of abundances of chemical species in galaxies, which is due to nuclear processes occurring in stars and to gas flows into and out of galaxies. This book deals with the chemical evolution of galaxies of all morphological types (ellipticals, spirals and irregulars) and stresses the importance of the star formation histories in determining the properties of stellar populations in different galaxies. The topic is approached in a didactical and logical manner via galaxy evolution models which are compared with observational results obtained in the last two decades: The reader is given an introduction to the concept of chemical abundances and learns about the main stellar populations in our Galaxy as well as about the classification of galaxy types and their main observables. In the core of the book, the construction and solution of chemical evolution models are discussed in detail, followed by descriptions and interpretations of observations of the chemical evolution of the Milky Way, spheroidal galaxies, irregular galaxies and of cosmic chemical evolution. The aim of this book is to provide an introduction to students as well as to amend our present ideas in research; the book also summarizes the efforts made by authors in the past several years in order to further future research in the field.
