Kinematics Of Cosmos Star Forming Galaxies Over The Last Eight Billion Years PDF Download
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| Author | : Debora Pelliccia |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2016 |
| Genre | : |
| ISBN | : |
Download Kinematics of COSMOS Star-forming Galaxies Over the Last Eight Billion Years Book in PDF, ePub and Kindle
In the local Universe it exists a tight relation between the galaxy morphology and other physical parameters, like the galaxy internal kinematics. At higher redshift it is not clear if this relation still exists. The galaxy kinematics is one of the best tool to study the physical processes that govern the galaxy formation, by tracing the galaxy internal distributions of luminous and dark matter and their evolution with time. This thesis presents the new survey HR-COSMOS aimed to obtain the first statistical and representative sample to study the kinematics of star-forming galaxies in the treasury HST/ACS COSMOS deep field at redshift 0
| Author | : Santiago Erroz-Ferrer |
| Publisher | : Springer |
| Total Pages | : 207 |
| Release | : 2015-11-21 |
| Genre | : Science |
| ISBN | : 3319263986 |
Download Morphology, Kinematics and Star Formation Across the Hubble Sequence of Galaxies Book in PDF, ePub and Kindle
This thesis discusses the evolution of galaxies through the study of the morphology, kinematics, and star formation properties of a sample of nearby galaxies. The main body of the thesis describes the kinematic observations with the GHaFAS Fabry-Perot instrument on the William Herschel Telescope of a sample of 29 spiral galaxies. The work is closely related to the Spitzer Survey of Stellar Structure in Galaxies, and uses the mid-infrared data of that survey to determine key parameters of the galaxies studied. From these data, important results are obtained on streaming and other non-circular motions in galaxies, on the distribution and rates of star formation, and on how correlations of these parameters and of the rotation curve shape with basic galaxy parameters yield clues on the evolutionary processes taking place in disk galaxies.
| Author | : Andrea Cimatti |
| Publisher | : Cambridge University Press |
| Total Pages | : 587 |
| Release | : 2019-10-17 |
| Genre | : Science |
| ISBN | : 1108764223 |
Download Introduction to Galaxy Formation and Evolution Book in PDF, ePub and Kindle
Present-day elliptical, spiral and irregular galaxies are large systems made of stars, gas and dark matter. Their properties result from a variety of physical processes that have occurred during the nearly fourteen billion years since the Big Bang. This comprehensive textbook, which bridges the gap between introductory and specialized texts, explains the key physical processes of galaxy formation, from the cosmological recombination of primordial gas to the evolution of the different galaxies that we observe in the Universe today. In a logical sequence, the book introduces cosmology, illustrates the properties of galaxies in the present-day Universe, then explains the physical processes behind galaxy formation in the cosmological context, taking into account the most recent developments in this field. The text ends on how to find distant galaxies with multi-wavelength observations, and how to extract the physical and evolutionary properties based on imaging and spectroscopic data.
| Author | : David R. Law |
| Publisher | : Universal-Publishers |
| Total Pages | : 252 |
| Release | : 2008-09 |
| Genre | : Science |
| ISBN | : 1599426919 |
Download The Kiloparsec-Scale Structure and Kinematics of High-Redshift Star-Forming Galaxies Book in PDF, ePub and Kindle
We study the spatially resolved properties of star-forming galaxies at redshift z 2 - 3 on scales 1 kpc using a combination of morphological and kinematic analyses in an effort to characterize the major mechanisms of galaxy formation in the young universe. Using a sample of 216 galaxies which have been spectroscopically confirmed to lie between redshifts z = 1.8 - 3.4 in the GOODS-N field we demonstrate that rest-UV morphology (as seen by the Hubble Space Telescope) is statistically uncorrelated with physical properties such as star formation rate and is therefore unable to support the hypothesis that the prevalence of irregular morphologies indicates a high major merger fraction. Further, we present a sample of 13 galaxies observed with the OSIRIS integral field spectrograph and the Keck laser-guide star adaptive optics system which demonstrate the prevalence of high velocity dispersions 80 km/s and generally little in the way of spatially resolved velocity gradients, inconsistent with favored rotating disk models. We discuss the implications of these results for galaxy formation models, including gas accretion via cold flows and gravitational instability of early gas-rich galactic disks. There is some evidence for a trend towards stronger rotational signatures in galaxies with more massive stellar populations.
| Author | : William C. Keel |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 266 |
| Release | : 2002-09-20 |
| Genre | : Science |
| ISBN | : 9781852335748 |
Download The Road to Galaxy Formation Book in PDF, ePub and Kindle
Written by one of the leading authorities in the field, this is one of the first book's to describe one of today's most important problems in cosmology - the formation of galaxies. The book tackles this great puzzle by discusses the beginnings of the process from cosmological observations and calculations, considers the broad features of galaxies that we need to explain and what we know of their later history. The author compares the competing theories for galaxy formation and considers the progress expected from new generations of powerful telescopes both on earth and in space. An intriguing text on one of today's greatest and most profound puzzles.
| Author | : Marianne Girard |
| Publisher | : |
| Total Pages | : 188 |
| Release | : 2019 |
| Genre | : |
| ISBN | : |
Download Kinematics of Star-forming Galaxies at Cosmic Noon Book in PDF, ePub and Kindle
| Author | : Nickolay Y. Gnedin |
| Publisher | : Springer |
| Total Pages | : 375 |
| Release | : 2015-09-09 |
| Genre | : Science |
| ISBN | : 3662478900 |
Download Star Formation in Galaxy Evolution: Connecting Numerical Models to Reality Book in PDF, ePub and Kindle
This book contains the elaborated and updated versions of the 24 lectures given at the 43rd Saas-Fee Advanced Course. Written by four eminent scientists in the field, the book reviews the physical processes related to star formation, starting from cosmological down to galactic scales. It presents a detailed description of the interstellar medium and its link with the star formation. And it describes the main numerical computational techniques designed to solve the equations governing self-gravitating fluids used for modelling of galactic and extra-galactic systems. This book provides a unique framework which is needed to develop and improve the simulation techniques designed for understanding the formation and evolution of galaxies. Presented in an accessible manner it contains the present day state of knowledge of the field. It serves as an entry point and key reference to students and researchers in astronomy, cosmology, and physics.
| Author | : Hyron Spinrad |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 216 |
| Release | : 2005-08-17 |
| Genre | : Science |
| ISBN | : 9783540254980 |
Download Galaxy Formation and Evolution Book in PDF, ePub and Kindle
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.
| Author | : Christopher J. Conselice |
| Publisher | : IOP Publishing Limited |
| Total Pages | : 160 |
| Release | : 2020 |
| Genre | : Science |
| ISBN | : 9780750326681 |
Download The Cosmic Evolution of Galaxy Structure Book in PDF, ePub and Kindle
Galaxies are the fundamental units of cosmic matter that make up the Universe and they change in remarkable ways over 13.7 billion years of cosmic time. We are just now discovering how galaxies we can see over these billions of years are evolving from small, star forming systems to larger, more massive and passive systems at later times. One of the ways that this process is seen in through the resolved structures of galaxies - that is, the shape and form of the galaxies This book explains the structural evolution of galaxies, how we measure it, how these measurements change with time, and how observing this reveals important information about galaxy formation and evolution. This includes how the general forms of galaxies change with time as well as uncovering the methods for producing structural changes, especially those involving galaxy mergers. The book also explains the future of the field through the use of machine learning tools, and how galaxy structure can be used as a new approach to measure unique features of the Universe, such as cosmological properties and parameters.
| Author | : Francoise Combes |
| Publisher | : John Wiley & Sons |
| Total Pages | : 290 |
| Release | : 2021-04-27 |
| Genre | : Science |
| ISBN | : 1789450128 |
Download Galaxies Book 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 Universes 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.
