This collection of papers from the Space Telescope Science Institute Symposium on massive stars addresses the many aspects of astrophysics in which these stars play an important role. Review papers are presented from both observational and theoretical work by world experts in the study of these rare stars. Topics discussed include star formation in the local and distant universe, the feedback effects of the massive stars, mass loss from massive stars, and explosions of massive stars. The combination of papers produces a comprehensive overview of up-to-date research in the field, making this book an invaluable resource for professional researchers and for students of astrophysics.

A Spectroscopic Atlas of the Stars: A Pocket Field Guide is a standard reference book for all amateur astronomers interested in practical spectroscopy or spectrography. For the first time in one place, it identifies more than 70 (northern hemisphere) bright stars that are suitable observational targets for both amateurs and astronomy students.

Finder charts are provided for locating these sometimes-familiar stars. Data for each star includes labelled stellar spectra, a spectral profile with spectral lines identified. These are conveniently laid out on a single page, opposite tables of spectroscopic properties, and lines and wavelengths identified.

This is the first Spectral Atlas designed for amateur astronomers. It is equally relevant to college undergraduates, being intended to familiarize astronomers of any age and level of knowledge with labelled stellar spectra and their different properties. It contains much information about stars which is hard to find or inaccessible to most people.

Estimating accurate stellar ages is one of the most difficult challenges in astrophysics. A star's age cannot be measured directly, and currently we only know the accurate age for one star: the Sun. Stellar ages lie at the heart of much of astrophysics. The accurate determination of timescales for physical processes in the stars allows us to compare the properties of stars at different stages in their lives. In IAU Symposium 258 astrophysicists from around the world discuss the current state of the problem of estimating ages of stars and stellar populations. They describe their efforts to better constrain the ages of individual stars and groups of stars through improved observations and physical models. IAU S258 highlights where the advances are being made and predicts what the near future offers.

First published in 1988 In Darkness Born brings together diverse work from many different branches of astronomy and shows clearly the synthesis of ideas that has resulted. The book presents the basic physical and astronomical ideas that are adequate for the lay reader to grasp the nature of our galaxy and to understand the way in which it formed. These basic concepts are used to develop a theoretical picture of how stars are born from giant clouds of gas and dust, and to understand the evidence from optical, radio, X-ray, ultraviolet and infrared observation. Martin Cohen is a recognised authority in this field. His knowledge and lucid style have resulted in a book which provides a stimulating introduction to most of the major concepts of astronomy. Any reader who prefers to grasp these concepts and ideas without tangling with theory and equations will find this a fascinating and illuminating book.

This tract gives a simple but rigorous treatment of some of the mathematical problems that arise in the theory of the transfer of radiation through the atmosphere of a star. Similar problems occur in the theory of the diffusion of neutrons and in the study of temperature-wave flow in solids; so the solutions found in one theory can often be applied in the others. Dr Busbridge's starting-point is the equation of transfer. The first section provides the auxiliary mathematics, and the second discusses the Milne equations. Some unsolved and incompletely solved problems are considered in an appendix. The language and notation of astrophysics is used throughout, for brevity and simplicity, but translation into other notations is usually fairly easy. Over the years the subject had grown considerably, and several outstanding problems have been solved, though the total amount of rigorous work is small. This tract will help to clear up confusions which exist and will provide an introduction to some of the more powerful mathematical techniques available.

Metal-rich stars accumulate their metals from previous generations of stars, and so contain the history of their galaxy. By studying these stars we can gain valuable insights into how metals change the formation and evolution of stars, and explain the extraordinary massive star populations observed in the metal-rich region of our own galaxy. Recent observations of metal-rich regions have shown that stars hosting giant planets are generally metal-rich, which has triggered further observations of metal-rich stars. This has led to the discovery of new exoplanets, and advances in the study of planet formation and the late chemical evolution of galaxies. This book is the first on this topic, and it covers many aspects, from spectral line formation to stellar formation and evolution in high metallicity regimes. It is invaluable to researchers and graduate students in stellar evolution, extragalactic astronomy, and planet formation.

In all phases of the life of a star, hydrodynamical processes play a major role. This volume gives a comprehensive overview of the state of knowledge in stellar astrophysical fluid dynamics, and its publication marked the 60th birthday of Douglas Gough, Professor of Theoretical Physics at the University of Cambridge and leading contributor to stellar astrophysical fluid dynamics. Topics include properties of pulsating stars, helioseismology, convection and mixing in stellar interiors, dynamics of stellar rotation, planet formation and the generation of stellar and planetary magnetic fields. Each chapter is written by leading experts in the field, and the book provides an overview that is central to any attempt to understand the properties of stars and their evolution. With extensive references to the technical literature, this is a valuable text for researchers and graduate students in stellar astrophysics.

Charles Messier's catalogue of nebulae and star clusters, published in 1784, marked the start of a new era of deep sky astronomy. This tradition of observing galaxies and clusters is kept alive by serious amateur astronomers who study the objects of the deep sky. Nearly all the objects are visible in a small telescope. Many, such as the Crab Nebula and the Andromeda galaxy, are among the most fascinating objects in the universe. Kenneth Glyn Jones has revised his definitive version of Messier's catalogue. His own observations and drawings, together with maps and diagrams, make this a valuable introduction to deep sky observing. Historical and astrophysical notes bring the science of these nebulae to the fore. This is a unique handbook, unlikely ever to be equalled in its completeness and importance to the telescope owner.

This authoritative volume provides a comprehensive review of the origin and evolution of planetary nebulae. It covers all the stages of their evolution, carefully synthesizes observations from across the spectrum, and clearly explains all the key physical processes at work. Particular emphasis is placed on observations from space, using the Hubble Space Telescope, the Infrared Space Observatory, and the ROSAT satellite. This book presents a thoroughly modern understanding of planetary nebulae, integrating developments in stellar physics with the dynamics of nebular evolution. It also describes exciting possibilities such as the use of planetary nebulae in determining the cosmic distance scale, the distribution of dark matter and the chemical evolution of galaxies. This book provides graduate students with an accessible introduction to planetary nebulae, and researchers with an authoritative reference. It can also be used as an advanced text on the physics of the interstellar medium.

Like the Earth and planets, stars rotate. Understanding how stars rotate is central to modelling their structure, formation and evolution, and how they interact with their environment and companion stars. This authoritative volume, first published in 2000, provides a lucid introduction to stellar rotation and the definitive reference to the subject. It combines theory and observation in a comprehensive survey of how the rotation of stars affects the structure and evolution of the Sun, single stars and close binaries. This book will be of primary interest to graduate students and researchers studying solar and stellar rotation and close binary systems. It will also appeal to those with a more general interest in solar and stellar physics, star formation, binary stars and the hydrodynamics of rotating fluids - including geophysicists, planetary scientists and plasma physicists.

The Local Group is a small cluster of galaxies that includes the Milky Way. At least half of all galaxies in the Universe are thought to belong to similar groups. This authoritative volume provides a comprehensive synthesis of what is known about the Local Group. It begins with a summary of each member galaxy, as well as those galaxies previously regarded as possible members. The book examines the mass, stability and evolution of the Local Group as a whole and includes many important previously unpublished results and conclusions. With clarity, Professor van den Bergh provides a masterful summary of all that is known about the galaxies of the Local Group and their evolution, and expertly places this knowledge in the wider context of on-going studies of galaxy formation and evolution, the cosmic distance scale, and the conditions in the early Universe.

Contemporary astronomers continue to search for ways to understand the irregular distribution of galaxies in our Universe. This volume describes gravitational theory, computer simulations and observations related to galaxy distribution functions, which is a general method for measuring the distribution of galaxies and their motions. Coverage embeds distribution functions in a broader astronomical context, and includes other contemporary topics such as correlation functions, fractals, bound clusters, topology, percolation and minimal spanning trees. Throughout, theory, computer simulation and observation are carefully interwoven and critically compared, and key results are derived and the necessary gravitational physics provided. The book also shows how future observations can test the theoretical models for the evolution of galaxy clustering at early times in our Universe. This clear and authoritative volume is written at a level suitable for graduate students, and will be of key interest to astronomers, cosmologists, physicists and applied statisticians.

Amateur astronomers are always on the lookout for new observing challenges. This exciting book retraces the steps of the greatest visual observer and celestial explorer who ever lived. This is a practical guide to locating and viewing the most impressive of Herschel 's star clusters, nebulae and galaxies, cataloging more than 600 of the brightest objects, and offering detailed descriptions and images of 150 to 200 of the best.

This book was first published in 2007. Variable stars are those that change brightness. Their variability may be due to geometric processes such as rotation, or eclipse by a companion star, or physical processes such as vibration, flares, or cataclysmic explosions. In each case, variable stars provide unique information about the properties of stars, and the processes that go on within them. This book provides a concise overview of variable stars, including a historical perspective, an introduction to stars in general, the techniques for discovering and studying variable stars, and a description of the main types of variable stars. It ends with short reflections about the connection between the study of variable stars, and research, education, amateur astronomy, and public interest in astronomy. This book is intended for anyone with some background knowledge of astronomy, but is especially suitable for undergraduate students and experienced amateur astronomers who can contribute to our understanding of these important stars.

Until recently, black holes were often considered as exotic objects of dubious existence. In the last decade, observations have provided overwhelming evidence in favour of the presence of supermassive black holes at the centre of galaxies, including the Milky Way; of stellar-mass black holes in binary stellar systems; and, possibly, of intermediate-mass black holes in ultraluminous X-ray sources in nearby galaxies. Black holes are now widely accepted as real physical entities, playing an important role in modern astrophysics. The IAU S238 brought together observers and theoreticians working in black hole astrophysics - from stellar-mass black holes to supermassive ones residing at the centre of galaxies - with the aim of highlighting and discussing similarities in the physics involved. Leading researchers review the subject and report on recent results on accretion discs, relativistic jets, spectroscopy in different spectral bands - from X-rays to radio - and other aspects of black hole astrophysics.

The brightest supernova explosion since the invention of the telescope has led to a corresponding explosion in research activity. This volume presents the papers from the Fourth George Mason University Workshop, held in the fall of 1987. There are numerous descriptions of the latest observations of this supernova and of the implications for theory. The book is an essential reference for all professional astronomers in stellar and galactic research who need the latest information on this fascinating phenomenon.

Most galaxies lie in clusters, where tidal interactions are a significant force. Tidal and dynamical interactions and the features they cause in galaxies are important to the study of galactic evolution. For example, a large amount of data has been collected on dust-lane ellipticals, polar-ring galaxies, spirals with extended warps, and galaxies with inclined HI rings or unusual "tails." This book is a record of a meeting held at the University of Pittsburgh that provided an informal, yet focused environment for the interaction of astronomers who have addressed these questions with a wide variety of skills, techniques, and points of view.

This book presents the theory of the electrodynamic phenomena which occur in the magnetosphere of a pulsar. It also provides a clear picture of the formation and evolution of neutron stars. The authors address the basic physical processes of electron-positron plasma production, the generation of electric fields and currents, and the emission of radio waves and gamma rays. The book also reviews observational data, and devotes a complete chapter to a detailed comparison of this data with accepted theory and with some recent theoretical predictions. Tables containing the values of the physical parameters of all observed radio pulsars are also provided. The book is illustrated throughout and is fully referenced. Graduate students and researchers in astrophysics and plasma physics working in the field of radio pulsars will find this book of great value.

Binary systems of stars are as common as single stars. Stars evolve primarily by nuclear reactions in their interiors, but a star with a binary companion can also have its evolution influenced by the companion. Multiple star systems can exist stably for millions of years, but can ultimately become unstable as one star grows in radius until it engulfs another. This volume, first published in 2006, discusses the statistics of binary stars; the evolution of single stars; and several of the most important kinds of interaction between two (and even three or more) stars. Some of the interactions discussed are Roche-lobe overflow, tidal friction, gravitational radiation, magnetic activity driven by rapid rotation, stellar winds, magnetic braking and the influence of a distant third body on a close binary orbit. A series of mathematical appendices gives a concise but full account of the mathematics of these processes.

Dwarf galaxies offer a valuable insight into the physical processes that govern galaxy formation and evolution at high redshift. These elusive stellar systems are helping astronomers to find answers to some of the most burning questions in extragalactic astronomy. Present-day dwarf galaxies, the easily studied survivors of the primordial galaxy population, are important targets for research in the quest to provide local benchmarks for cosmological studies, in particular theories of structure formation. The proceedings of IAUC198 offer an exciting multidisciplinary collection of research results. The interpretation of the faint blue galaxy excess; the mismatch of the observed dwarf galaxy numbers with popular cosmological model predictions; and the puzzling diversity of star-formation histories among Local Group dwarf elliptical galaxies, are amongst the topical questions covered. Dwarf galaxy specialists and cosmologists map out strategies and outline a framework for progress on important issues related to near-field cosmology with dwarf elliptical galaxies.

The Local Group of galaxies consists of the Milky Way and all of its neighbors. The proximity of these galaxies allows for detailed studies of the processes that have led to their formation, structures, and evolution. In particular, studies of the Local Group can test predictions of structure formation that are based on dark energy and cold dark matter. This book presents a collection of review papers, written by world experts, on some of the most important aspects of Local Group Astrophysics. It is an invaluable resource for both professional researchers and graduate students in this cutting-edge area of research.

ASTRONOMERSa (TM) OBSERVING GUIDES provide up-to-date information for amateur astronomers who want to know all about what it is they are observing. This is the basis of the first part of the book. The second part details observing techniques for practical astronomers, working with a range of different instruments.

Star Clusters and How to Observe Them is a mine of information for all levels of amateur observers, from beginners to experienced observers. It begins with a detailed yet easily assimilated description of star clusters, how they were formed as our Milky Way galaxy evolved, and how they are classified. The latest research has revealed a vast amount of fascinating information about the clusters, along with some spectacular photographs.

Modern commercially-made telescopes enable amateur astronomers to see a surprising amount of detail, and to record a" using CCD cameras, video, webcams or even film a" some remarkably beautiful and detailed images. There is detailed information on using refractors, reflectors, SCTa (TM)s (like Meade and Celestron) and computer-controlled telescopes

The book includes an Observing List cataloguing star clusters to be observed or imaged using a variety of different instruments, all of them available commercially to amateur astronomers.

More than two-thirds of stars belong to multiple stellar systems. Binary stars are considered now as one of the best constraints on stellar formation models. Not only do binaries keep memory of their birth conditions but their orbit will also be subjected to changes by tidal effects, wind accretion and encounters in clusters. Certainly the correlation between orbital eccentricity and period is a clue to our understanding of double star history. These proceedings aim to disentangle evidence of stellar formation from later physical evolution. Each article in this 1992 volume is a paper that was read at a meeting organized to honour Dr Roger Griffin of the University of Cambridge for his pioneer work in galactic astronomy, dynamics of clusters and study on binary stars due to his cross-correlation technique to determine stellar radial velocities.

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.

Supernovae and gamma-ray bursts are the strongest explosions in the Universe. Recent observations have shown that rather than being symmetrical, they are driven by strong jets of energy and other asymmetrical effects that reveal previously unknown physical properties. These observations have demanded new theories and computations that challenge the biggest computers. This volume marks the transition to a new paradigm in the study of stellar explosions. It highlights the burgeoning era of routine supernova polarimetry and the new insights into core collapse and thermonuclear explosions. With chapters by leading scientists, the book summarises the status of a rapidly developing new perspective on stellar explosions. It is a valuable resource for graduate students and research scientists.