Author : Sidney Van den Bergh
Publisher : Cambridge University Press
Page : 125 pages
File Size : 32,94 MB
Release : 1998-04-16
Category : Science
ISBN : 0521623359
A concise and up-to-date guide to the shape of galaxies and how they can be classified, by one of the pioneers of the field.
Author : B. W. Holwerda
Publisher :
Page : 0 pages
File Size : 35,84 MB
Release : 2021
Category : Galaxies
ISBN : 9780750334990
Galaxy morphology is a long-standing subfield of astronomy, moving from visual qualifications to quantitative morphometrics. This book covers the descriptions developed by astronomers to describe the appearance of galaxies, primarily in optical, ultraviolet and near-infrared wavelengths.
Author : Marc S Seigar
Publisher : Morgan & Claypool Publishers
Page : 84 pages
File Size : 22,30 MB
Release : 2017-06-29
Category : Science
ISBN : 1681746093
How does it happen that billions of stars can cooperate to produce the beautiful spirals that characterize so many galaxies, including ours? This book reviews the history behind the discovery of spiral galaxies and the problems faced when trying to explain the existence of spiral structure within them. In the book, subjects such as galaxy morphology and structure are addressed as well as several models for spiral structure. The evidence in favor or against these models is discussed. The book ends by discussing how spiral structure can be used as a proxy for other properties of spiral galaxies, such as their dark matter content and their central supermassive black hole masses, and why this is important.
Author : Ronald J. Buta
Publisher : Cambridge University Press
Page : 13 pages
File Size : 18,82 MB
Release : 2007-03-08
Category : Science
ISBN : 0521820480
New illustrated atlas on modern galaxy classification for astronomy researchers, students, and amateurs.
Author : Jean-René Roy
Publisher : Cambridge University Press
Page : 311 pages
File Size : 29,41 MB
Release : 2018
Category : Nature
ISBN : 1108417019
A thought provoking study of the powerful impact of images in guiding astronomers' understanding of galaxies through time.
Author : Edwin Powell Hubble
Publisher : Yale University Press
Page : 264 pages
File Size : 44,5 MB
Release : 1982-01-01
Category : Science
ISBN : 9780300025002
No modern astronomer made a more profound contribution to our understanding of the cosmos than did Edwin Hubble, who first conclusively demonstrated that the universe is expanding. Basing his theory on the observation of the change in distanct galaxies, called red shift, Hubble showed that this is a Doppler effect, or alteration in the wavelength of light, resulting from the rapid motion of celestial objects away from Earth. In 1935, Hubble described his principal observations and conclusions in the Silliman lectures at Yale University. These lectures were published the following year as "The Realm of the Nebulae," which quickly became a classic work.
Author : Francoise Combes
Publisher : John Wiley & Sons
Page : 288 pages
File Size : 18,55 MB
Release : 2021-03-05
Category : Science
ISBN : 1119817994
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.
Author : Francoise COMBES
Publisher : Springer Science & Business Media
Page : 468 pages
File Size : 25,28 MB
Release : 2004-08-11
Category : Science
ISBN : 9783540419273
Unique in its breadth of coverage and level of presentation, this revised textbook provides more on the nature of galaxies, extragalactic objects, the large-scale structure of the Universe, and cosmology than is available in general textbooks on astronomy. It remains, however, accessible to advanced undergraduate students. One or more chapters are devoted to each of the following: the classification and morphology of galaxies; the galactic interstellar medium; galactic kinematics; elliptical, spiral, and barred spiral galaxies; the interactions between galaxies; extragalactic radio sources, quasars and their line spectra, and other active galactic nuclei; the formation of galaxies; the Universe as a whole; and cosmology.
Author : Ignacio Ferreras
Publisher : UCL Press
Page : 200 pages
File Size : 10,28 MB
Release : 2019-04-02
Category : Science
ISBN : 1911307614
Galaxies, along with their underlying dark matter halos, constitute the building blocks of structure in the Universe. Of all fundamental forces, gravity is the dominant one that drives the evolution of structures from small density seeds at early times to the galaxies we see today. The interactions among myriads of stars, or dark matter particles, in a gravitating structure produce a system with fascinating connotations to thermodynamics, with some analogies and some fundamental differences. Ignacio Ferreras presents a concise introduction to extragalactic astrophysics, with emphasis on stellar dynamics, and the growth of density fluctuations in an expanding Universe. Additional chapters are devoted to smaller systems (stellar clusters) and larger ones (galaxy clusters). Fundamentals of Galaxy Dynamics, Formation and Evolution is written for advanced undergraduates and beginning postgraduate students, providing a useful tool to get up to speed in a starting research career. Some of the derivations for the most important results are presented in detail to enable students appreciate the beauty of maths as a tool to understand the workings of galaxies. Each chapter includes a set of problems to help the student advance with the material.
Author : Tutut Herawan
Publisher : Springer Science & Business Media
Page : 728 pages
File Size : 37,22 MB
Release : 2013-12-14
Category : Technology & Engineering
ISBN : 9814585181
The proceeding is a collection of research papers presented at the International Conference on Data Engineering 2013 (DaEng-2013), a conference dedicated to address the challenges in the areas of database, information retrieval, data mining and knowledge management, thereby presenting a consolidated view to the interested researchers in the aforesaid fields. The goal of this conference was to bring together researchers and practitioners from academia and industry to focus on advanced on data engineering concepts and establishing new collaborations in these areas. The topics of interest are as follows but are not limited to: • Database theory • Data management • Data mining and warehousing • Data privacy & security • Information retrieval, integration and visualization • Information system • Knowledge discovery in databases • Mobile, grid and cloud computing • Knowledge-based • Knowledge management • Web data, services and intelligence
