While there are guides to the visible sky, this is the first book to encompass the most important stars known in the universe at a level accessible to the layperson. The noted astronomer James Kaler takes us on a tour of the 100 most interesting stars, describing their characteristics and importance in words and vivid pictures. James B. Kaler is an internationally recognized expert on stars and their formation. A professor of astronomy at the University of Illinois, he is the author of "Stars and Their Spectra" (Cambridge), "Stars" (Freeman/Scientific American Library), "Cosmic Clouds" (Freeman/Scientific American Library), and numerous articles for popular and professional astronomy magazines.
Since it was first published in 1987, Galactic Dynamics has become the most widely used advanced textbook on the structure and dynamics of galaxies and one of the most cited references in astrophysics. Now, in this extensively revised and updated edition, James Binney and Scott Tremaine describe the dramatic recent advances in this subject, making Galactic Dynamics the most authoritative introduction to galactic astrophysics available to advanced undergraduate students, graduate students, and researchers. Every part of the book has been thoroughly overhauled, and many sections have been completely rewritten. Many new topics are covered, including N-body simulation methods, black holes in stellar systems, linear stability and response theory, and galaxy formation in the cosmological context. Binney and Tremaine, two of the world's leading astrophysicists, use the tools of theoretical physics to describe how galaxies and other stellar systems work, succinctly and lucidly explaining theoretical principles and their applications to observational phenomena. They provide readers with an understanding of stellar dynamics at the level needed to reach the frontiers of the subject. This new edition of the classic text is the definitive introduction to the field. ? A complete revision and update of one of the most cited references in astrophysics Provides a comprehensive description of the dynamical structure and evolution of galaxies and other stellar systems Serves as both a graduate textbook and a resource for researchers Includes 20 color illustrations, 205 figures, and more than 200 problems Covers the gravitational N-body problem, hierarchical galaxy formation, galaxy mergers, dark matter, spiral structure, numerical simulations, orbits and chaos, equilibrium and stability of stellar systems, evolution of binary stars and star clusters, and much more Companion volume to Galactic Astronomy, the definitive book on the phenomenology of galaxies and star clusters
The study of stars and their spectra is central to an understanding of classical and modern astronomy. The principal tool for investigating the nature of stars is to observe and interpret their spectra. In this lucid book, James Kaler clearly explains the alphabet of stellar astronomy - from the cool M stars to hot O stars - and tells the story of the evolution of stars and their place in the Universe. Before embarking on a fascinating voyage of cosmic discovery, we are introduced to the fundamental properties of stars, and how they can be categorised. Next, the structure of atoms and the formation of spectra is discussed, as a prelude to a full description of the spectral classification itself. The heart of the book examines each star type in turn and explores their spectra in detail. Notable discoveries and features related to each class sustain the story. There is also a review of unusual stars that cannot easily be classified. Finally, the book closes with a skilful integration of all the data - tracing the paths of birth, life and death of stars on the Hertzsprung-Russell diagram. This book is based on a widely acclaimed series of articles on stellar astronomy which appeared in the magazine Sky and Telescope. It provides an invaluable introduction for observers and students.
A self-contained introduction to general relativity that is based on the homogeneity and isotropy of the local universe. Emphasis is placed on estimations of the densities of matter and vacuum energy, and on investigations of the primordial density fluctuations and the nature of dark matter.
This is the definitive treatment of the phenomenology of galaxies--a clear and comprehensive volume that takes full account of the extraordinary recent advances in the field. The book supersedes the classic text Galactic Astronomy that James Binney wrote with Dimitri Mihalas, and complements Galactic Dynamics by Binney and Scott Tremaine. It will be invaluable to researchers and is accessible to any student who has a background in undergraduate physics. The book draws on observations both of our own galaxy, the Milky Way, and of external galaxies. The two sources are complementary, since the former tends to be highly detailed but difficult to interpret, while the latter is typically poorer in quality but conceptually simpler to understand. Binney and Merrifield introduce all astronomical concepts necessary to understand the properties of galaxies, including coordinate systems, magnitudes and colors, the phenomenology of stars, the theory of stellar and chemical evolution, and the measurement of astronomical distances. The book's core covers the phenomenology of external galaxies, star clusters in the Milky Way, the interstellar media of external galaxies, gas in the Milky Way, the structure and kinematics of the stellar components of the Milky Way, and the kinematics of external galaxies. Throughout, the book emphasizes the observational basis for current understanding of galactic astronomy, with references to the original literature. Offering both new information and a comprehensive view of its subject, it will be an indispensable source for professionals, as well as for graduate students and advanced undergraduates.
First observed by Galileo, Saturn lies in the distant reaches of the solar system; it is the sixth planet, a gaseous giant between Jupiter and Uranus. It takes its name from the mythological father of Jupiter and Roman god of agriculture. Because of the famous circle of rings Saturn is one of the most well-regarded occupants of the galaxy. Despite their continuous appearance from Earth, the rings are actually space dust and debris trapped by Saturn's gravitational pull, a fact garnered from several satellite passes and telescope observations. The origin of Saturn's rings, however, remains a mystery. Apart from the rings, we also are aware of its moon system, with the most intriguing planetoid called Titan, itself having been the subject of science fiction speculation as a home to life. Saturn has been visited by Pioneer 11 and the two Voyager probes, with Cassini slated to arrive in 2004. Our study of this most intriguing planet will continue into the foreseeable future, with the hopes of resolving the mysteries it hides. This book provides a thorough and interesting overview of Saturn, from its initial observation centuries ago to the contemporary satellite fly-bys. Anyone captivated by the mysteries of space and the wonders of Saturn needs to understand the background covered here. After the overview is a substantial and carefully selected set of abstracts of literature pertaining to Saturn, with easy access then given through author, title, and subject indexes.
Gerald North's complete practical guide and resource package instructs amateur astronomers in observing and monitoring variable stars and other objects of variable brightness. Descriptions of the objects are accompanied by explanations of the background astrophysics, providing readers with real insight into what they are observing at the telescope. The main instrumental requirements for observing and estimating the brightness of objects by visual means and by CCD photometry are detailed, and there is advice on the selection of equipment. The book contains a CD-ROM packed with resources, including hundreds of light-curves and over 600 printable finder charts. Containing extensive practical advice, this comprehensive guide is an invaluable resource for amateur astronomers of all levels, from novices to more advanced observers. Gerald North is a lifelong amateur astronomer. In addition to being a member of the British Astronomical Association since 1977, he is also the author of many books, including Advanced Amateur Astronomy (Cambridge, 1997) and Observing the Moon (Cambridge, 2000).
This book is intended to be a course about the creation and evolution of the universe at large, including the basic macroscopic building blocks (galaxies) and the overall large-scale structure. This text covers a broad range of topics for a graduate-level class in a physics department where students' available credit hours for astrophysics classes are limited. The sections cover galactic structure, external galaxies, galaxy clustering, active galaxies, general relativity and cosmology.
The Barnard Objects have fascinated professional and amateur astronomers for over one hundred years. Many of those objects first imaged by E.E. Barnard on black-and-white photographic plates are now being captured daily in thousands of color astrophotographs. This book tells of Barnard’s story; describing his life and work as well as how the fields of astronomy and astrophotography have transformed ever since. The chapters in this book are equal parts history and science. It will provide readers with an introduction to nebula science and the incredible discoveries made in this field over the decades; including an overview of popular astronomical catalogues and a detailed look at how astronomical imaging has advanced since Barnard’s time, from early plates to digital imaging and chips. In addition, the book features a comprehensive guide to viewing and imaging these objects yourself. A glossary of astronomical and photographic terms is provided, along with detailed references. And, an updated table displaying the locations of these Barnard Objects; including the missing twenty-five objects from E.E. Barnard’s original catalogue. Richly researched and illustrated, this fascinating reference will attract astronomers of all skill levels interested in astrophotography and how it has changed over the past hundred years.
Covers all the phenomenological and experimental data on nuclear physics and demonstrates the latest experimental developments that can be obtained. Introduces modern theories of fundamental processes, in particular the electroweak standard model, without using the sophisticated underlying quantum field theoretical tools. Incorporates all major present applications of nuclear physics at a level that is both understandable by a majority of physicists and scientists of many other fields, and usefull as a first introduction for students who intend to pursue in the domain.
Covering the adventures of coastal and ocean explorers who made key discoveries and landmark observations from northern California up the coastline to Alaska during the mid-1700s to the early 1800s, this anthology of primary source journal entries, book excerpts, maps, and drawings enables readers to "discover" the Northwest Coast for themselves. More than 200 years ago, explorers traveled from Central America, Russia, and even Europe to explore the coastline of the American Pacific Northwest, with goals of developing new trade routes, claiming territory for their home countries, expanding their fur trade, or exploring in the name of scientific discovery. This book will take readers to the decks of the great ships and along for the adventures of legendary explorers, such as James Cook, Alejandro Malaspina, and George Vancouver. This book collects primary source materials such as journal entries, book excerpts, maps, and drawings that document how explorers first experienced the unknown Pacific Northwest coast, as seen through the eyes of non-native people. Readers will learn how explorers such as Vitus Bering and Robert Gray used the full extent of their powers of observation to record the landscape, animals, and plants they witnessed as well as their interactions with indigenous peoples during their search for the mythic Northwest Passage. The book also explains how the maritime explorers of this period mapped the remote regions of the Northwest Coast, working without the benefit of modern technology and relying instead on their knowledge of a range of sciences, mathematics, and seamanship—in addition to their ability to endure harsh and dangerous conditions—to produce exceptionally detailed maps.
The book begins at the Sun then travels through the solar system to see the stars, how they work, and ultimately what they mean to us. The idea is to provide an integrated view of the galaxy and its contents. Along the way we look at spectra, atmospheric phenomena, gravity and the laws of motion, telescopes and how they work, interstellar gas and dust, star birth and death, and planets orbiting other stars. Most popular books tend to focus on one particular topic. From the Sun to the Stars is one of the few that tells the story of the Sun against the background of other stars and other planets and, for that matter, of stars and other planets against the background of the Sun and solar system. This presents the subject with a breadth that few other books can match.This book grew out of the OLLI (Osher Lifelong Learning Institute) lectures given by the author at the University of Illinois. It doesn't require any prior knowledge and is suitable for anyone who is interested in astronomy.
The past few years have seen an incredible explosion in our knowledge of the universe. Since its 2009 launch, the Kepler satellite has discovered more than two thousand exoplanets, or planets outside our solar system. More exoplanets are being discovered all the time, and even more remarkable than the sheer number of exoplanets is their variety. In Exoplanets, astronomer Michael Summers and physicist James Trefil explore these remarkable recent discoveries: planets revolving around pulsars, planets made of diamond, planets that are mostly water, and numerous rogue planets wandering through the emptiness of space. This captivating book reveals the latest discoveries and argues that the incredible richness and complexity we are finding necessitates a change in our questions and mental paradigms. In short, we have to change how we think about the universe and our place in it, because it is stranger and more interesting than we could have imagined.
This volume is newest installment of the series, The Secret History of the Vedas. This is a book of astrology like no other. This book presents an entirely new view of astrology as originally conceived by the Vedic astrologer. The Spiritual Legacy of the Nakshatras focuses on the Vedic lunar mansions in the sky and attempts to reveal their wisdom. It attempts to explain the numerous references to all things astronomical and astrological according to the Vedas and explain the true purpose of reading the stars. It traces the creation of the universe from the very beginnings of time and space to the development of the Nakshatras. It shows how this evolution guides the worshiper in the spiritual journey. The Vedic astrologer also describes the wisdom contained in the Nakshatras and methods by which this wisdom may be incorporated into the worshiper’s life. Because this is what the Nakshatras have to give. The purpose of the lunar mansions was not to tell the future, but to guide the worshiper, to provide the religious edification of the worshiper in the now and present, and to provide the spiritual and religious structure to the Vedic dharma. Accordingly, this book is not concerned with forecasting into the future. It is as astrology was intended to be—a vehicle of spiritual advancement. It is all explained in and through The Vedic Astrologer.
As the search for Earth-like exoplanets gathers pace, in order to understand them, we need comprehensive theories for how planetary atmospheres form and evolve. Written by two well-known planetary scientists, this text explains the physical and chemical principles of atmospheric evolution and planetary atmospheres, in the context of how atmospheric composition and climate determine a planet's habitability. The authors survey our current understanding of the atmospheric evolution and climate on Earth, on other rocky planets within our Solar System, and on planets far beyond. Incorporating a rigorous mathematical treatment, they cover the concepts and equations governing a range of topics, including atmospheric chemistry, thermodynamics, radiative transfer, and atmospheric dynamics, and provide an integrated view of planetary atmospheres and their evolution. This interdisciplinary text is an invaluable one-stop resource for graduate-level students and researchers working across the fields of atmospheric science, geochemistry, planetary science, astrobiology, and astronomy.
Over the past 200 years, our knowledge of stars has expanded enormously. From seeing myriad dots of different brightnesses, we moved on to measure distances, temperatures, sizes, chemical compositions, even ages, finding stars that dwarf our Sun and are dwarfed by it, some in their youth, others ancient. First published in 2001, Extreme Stars describes the lives of stars from a fascinating perspective. It examines their amazing extremes and results in an engaging overview of stellar evolution, suitable for anyone interested in viewing or studying stars. Ten chapters, generously illustrated throughout, explain the natures of the brightest, the largest, the hottest, the youngest, and so on, ending with a selection of the strangest stars the Universe has to offer. Taken as a whole, the chapters show how stars develop and die and how each extreme turns into another under the inexorable twin forces of time and gravity.
This volume consists of 82 classic and important contributions to the basic neurobiology of learning and memory. Included are historical articles as well as articles on developmental plasticity, hormones and memory, long-term potentiation, electrophysiology of memory, biochemistry of memory, morphology of memory, invertebrate models, and features of animal and human memory. This is a companion volume to Brain Theory Reprint Volume in which articles on mathematical models of memory are presented.
This book includes numerous calculations for the many specific examples included within. I have included the many calculated examples to provide the reader with immediate justifications for the numerous concepts described. This was not done to belittle or talk down to the reader but rather to give the reader a clear sense of the plausibility for the propulsion methods and performance capabilities thereof. Interstellar travel at the many specific highly relativistic velocities contemplated in this bookand, in some cases, extreme vehicle massesis still a very controversial subject but nonetheless a highly mathematicalized and intelligible subject. My hope and intention is to thus clearly inspire and show the reader the plausibility of the concepts by providing the reader with proper evidence through his or her simple inspection of the formulas and values included in the computations. Some speculative physics is included, which is based on commonly presented theoretical constructs.
Aden B. Meinel and wife Marjorie P. Meinel stood at the confluence of several overarching technological developments of the 20th century: postwar aerial surveillance by spy planes and satellites, solar energy, the evolution of telescope design, interdisciplinary optics, and photonics. In 1945 he was a Navy Ensign ordered to find the secret tunnels in Nazi Germany where the V-2 rockets menacing Great Britain and Belgium were being manufactured. After receiving both his B.A. degree and Ph.D. in astronomy from the University of California at Berkeley within three years, Aden was invited to join the scientific staff at Yerkes Observatory/University of Chicago. While there he was selected by the National Science Foundation to manage the development of a new national observatory on Kitt Peak, Arizona, and served as its first Director. In the early 1960s he founded the Optical Sciences Center at the University of Arizona, which later metamorphosed into the College of Optical Sciences with the doctoral program in interdisciplinary optics. It was here that he also designed the first Multiple Mirror Telescope and with wife Marjorie pioneered the feasibility of solar energy power on a commercial scale. Aden's knowledge and expertise in optics made him invaluable in research on cameras for spy satellites and spy planes overflying the Soviet Union and Southeast Asia. After retirement the Meinels worked for NASA/JPL on the precursor of the James Webb Space Telescope and on the exoplanet program. They also served on the team that corrected spherical aberration in the Hubble Space Telescope"--
Each night, we are able to gaze up at the night sky and look at the thousands of stars that stretch to the end of our individual horizons. But the stars we see are only those that make up our own Milky Way galaxy—but one of hundreds of billions in the whole of the universe, each separated by inconceivably huge tracts of empty space. In this book, astronomer James Geach tells the rich stories of both the evolution of galaxies and our ability to observe them, offering a fascinating history of how we’ve come to realize humanity’s tiny place in the vast universe. Taking us on a compelling tour of the state-of-the-art science involved in mapping the infinite, Geach offers a first-hand account of both the science itself and how it is done, describing what we currently know as well as that which we still do not. He goes back one hundred years to when scientists first proved the existence of other galaxies, tracking our continued improvement in the ability to collect and interpret the light that stars in faraway galaxies have emitted through space and time. He discusses examples of this rapidly accelerating research, from the initial discovery that the faint “spiral nebulae” were actually separate star systems located far beyond the Milky Way to the latest observations of the nature of galaxies and how they have evolved. He also delves into the theoretical framework and simulations that describe our current “world model” of the universe. With one hundred superb color illustrations, Galaxy is an illuminating guide to the choreography of the cosmos and how we came to know our place within it that will appeal to any stargazer who has wondered what was beyond their sight.
This thesis describes the application of a Monte Carlo radiative transfer code to accretion disc winds in two types of systems spanning 9 orders of magnitude in mass and size. In both cases, the results provide important new insights. On small scales, the presence of disc winds in accreting white dwarf binary systems has long been inferred from the presence of ultraviolet absorption lines. Here, the thesis shows that the same winds can also produce optical emission lines and a recombination continuum. On large scales, the thesis constructs a simple model of disc winds in quasars that is capable of explaining both the observed absorption and emission signatures – a crucial advance that supports a disc-wind based unification scenario for quasars. Lastly, the thesis also includes a theoretical investigation into the equivalent width distribution of the emission lines in quasars, which reveals a major challenge to all unification scenarios.
Almost all conventional matter in the Universe is fluid, and fluid dynamics plays a crucial role in astrophysics. This graduate textbook, first published in 2007, provides a basic understanding of the fluid dynamical processes relevant to astrophysics. The mathematics used to describe these processes is simplified to bring out the underlying physics. The authors cover many topics, including wave propagation, shocks, spherical flows, stellar oscillations, the instabilities caused by effects such as magnetic fields, thermal driving, gravity, shear flows, and the basic concepts of compressible fluid dynamics and magnetohydrodynamics. The authors are Directors of the UK Astrophysical Fluids Facility (UKAFF) at the University of Leicester, and editors of the Cambridge Astrophysics Series. This book has been developed from a course in astrophysical fluid dynamics taught at the University of Cambridge. It is suitable for graduate students in astrophysics, physics and applied mathematics, and requires only a basic familiarity with fluid dynamics.
Written specially for practical amateur astronomers who not only want to observe, but want to know and understand the details of exactly what they are looking at. Presents an up-to-date detailed description of the objects, their physics and their evolution (part one); and then (part two) to consider how to observe and record them successfully. Delivers a wealth of information for all levels of amateur observers, from the beginner to the experienced; it is equally fascinating for practical astronomers, and also for those who simply want to find out more about these unusual star systems.
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