Cyclical Variability In Stellar Winds

Author : Lex Kaper,Alexander W. Fullerton
Publisher : Springer Science & Business Media
Page : 426 pages
File Size : 47,5 Mb
Release : 2013-06-05
Category : Science
ISBN : 9783540685975

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Cyclical Variability in Stellar Winds by Lex Kaper,Alexander W. Fullerton Pdf

It is well known that stellar winds are variable, and the fluctuations are often cyclical in nature. This property seems to be shared by the winds of cool and hot stars, even though their outflows are driven by fundamentally different physical mechanisms. Since very similar models have been proposed to explain the cyclical wind variations observed in a wide variety of stars, the time was ripe for astrophysicists from many different sub-disciplines to present the state of the art in a concise form. The proceedings will provide a useful, up-to-date overview of the observations, interpretation, and modelling of the time-dependent mass outflows from all sorts of stars.

Author : Jeroen Adriaan de Jong
Publisher : Unknown
Page : 84 pages
File Size : 44,8 Mb
Release : 2000
Category : Electronic
ISBN : 9057760436

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On the Origin of Cyclical Variability in the Winds of Massive Stars by Jeroen Adriaan de Jong Pdf

Author : Harm J. Habing,Hans Olofsson
Publisher : Springer Science & Business Media
Page : 566 pages
File Size : 41,8 Mb
Release : 2013-04-17
Category : Science
ISBN : 9781475738766

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Asymptotic Giant Branch Stars by Harm J. Habing,Hans Olofsson Pdf

The underlying astrophysical mechanisms of the objects known as asymptotic giant branch stars - the structures that occur during the dramatic period prior to a star's death - is the main theme of this text. Over the past three decades, asymptotic giant branch stars have become a topic of their own, and the contributions to this volume all focus on these entities themselves, rather than their connections to other fields of astronomy. Among the many topics covered are new methods of high- quality infrared observation and the more detailed and realistic simulations made possible by increasingly fast computers. This collection should be useful to graduate students who work in the field, teachers who want to address the subject in their courses, and to astronomers from various backgrounds who are interested in the astrophysics of AGB stars.

Author : P Murdin
Publisher : CRC Press
Page : 5610 pages
File Size : 52,8 Mb
Release : 2001-01-01
Category : Science
ISBN : 9781000523034

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Encyclopedia of Astronomy & Astrophysics by P Murdin Pdf

In a unique collaboration, Nature Publishing Group and Institute of Physics Publishing have published the most extensive and comprehensive reference work in astronomy and astrophysics. This unique resource covers the entire field of astronomy and astrophysics and this online version includes the full text of over 2,750 articles, plus sophisticated search and retrieval functionality and links to the primary literature. The Encyclopaedia's authority is assured by editorial and advisory boards drawn from the world's foremost astronomers and astrophysicists. This first class resource is an essential source of information for undergraduates, graduate students, researchers and seasoned professionals, as well as for committed amateurs, librarians and lay people wishing to consult the definitive astronomy and astrophysics reference work.

Author : Wolf-Rainer Hamann,Achim Feldmeier,Lidia M. Oskinova
Publisher : Universitätsverlag Potsdam
Page : 262 pages
File Size : 49,6 Mb
Release : 2008
Category : Stellar winds
ISBN : 9783940793331

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Clumping in Hot-star Winds by Wolf-Rainer Hamann,Achim Feldmeier,Lidia M. Oskinova Pdf

Author : Space Telescope Science Institute (U.S.)
Publisher : Cambridge University Press
Page : 780 pages
File Size : 54,6 Mb
Release : 2000-04-13
Category : Science
ISBN : 0521780918

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Unsolved Problems in Stellar Evolution by Space Telescope Science Institute (U.S.) Pdf

The most comprehensive and up-to-date survey available on stellar structure and evolution, with a special emphasis on currently unsolved problems.

Author : Anthony F.J. Moffat,Stanley P. Owocki,Alex W. Fullerton,Nicole St-Louis
Publisher : Springer Science & Business Media
Page : 475 pages
File Size : 50,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401103152

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Instability and Variability of Hot-Star Winds by Anthony F.J. Moffat,Stanley P. Owocki,Alex W. Fullerton,Nicole St-Louis Pdf

This specialized workshop was conceived during the workshop on "Non isotropic and Variable Outflows from Stars", which was held at the Space Telescope Science Institute in October, 1991. At that meeting, the four of us collectively decided that the time was ripe for an even more focussed discussion of the basic issues in the area of hot-star wind instability and its observable manifestations. Not that the big problems have been solved! Rather, we are currently in a phase of rapid development, both with regard to the models and to the observations. The key issue at this new workshop would be to decide how the time-dependent structures observed in hot-star winds (e. g. , NACs, DACs, blobs, clumps, filaments, shells, puffs, jets, etc. ) relate to radiative and other instabilities. Further questions concern the role of turbulence and the nature of its driver, and the effect of stellar rotation, pulsation, and magnetic fields on time-dependent phenomena in hot-star winds. Of no less importance is the impact of stellar wind variability on the derivation of mass-loss rates, on stellar evolution, and on momentum/energy deposition in the interstellar medium. To attain our goal of maximum confrontation (in the positive sense!) we decided: (1) to limit the workshop to the observers and theoreticians most active in this field in the world; (2) to insist that virtually all participants present a talk, thereby avoiding the distraction of poster sessions; and (3) to allocate approximately half of the allotted time to discussion.

Author : A. Fitzsimmons,D. Jewitt,Richard M. West
Publisher : Springer Science & Business Media
Page : 220 pages
File Size : 51,7 Mb
Release : 2000-12-12
Category : Science
ISBN : 3540411526

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Minor Bodies in the Outer Solar System by A. Fitzsimmons,D. Jewitt,Richard M. West Pdf

This volume tries to summarize the status of observational knowledge of the Kuiper Belt. Its recent discovery has revitalized the astromomical study of the Solar System and is beginning to open new and unexpected windows on the physics of planetesimal accretion. With more and better observational data being obtained at the technological limit of current facilities, a new perception of the relationships that exist among the various classes of small Solar System bodies has emerged. The new observations have also motivated a number of fascinating theoretical studies in Solar System dynamics.

Author : COSPAR. Scientific Commission E. E2.1 Symposium (Nagoya, Japan)
Publisher : Unknown
Page : 142 pages
File Size : 49,6 Mb
Release : 1999
Category : Astroseismology
ISBN : STANFORD:36105028990898

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Helioseismology and Solar Variability by COSPAR. Scientific Commission E. E2.1 Symposium (Nagoya, Japan) Pdf

Author : André Balogh,Hugh Hudson,Kristóf Petrovay,Rudolf Steiger
Publisher : Springer
Page : 602 pages
File Size : 43,5 Mb
Release : 2015-04-16
Category : Science
ISBN : 9781493925841

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The Solar Activity Cycle by André Balogh,Hugh Hudson,Kristóf Petrovay,Rudolf Steiger Pdf

A collection of papers edited by four experts in the field, this book sets out to describe the way solar activity is manifested in observations of the solar interior, the photosphere, the chromosphere, the corona and the heliosphere. The 11-year solar activity cycle, more generally known as the sunspot cycle, is a fundamental property of the Sun. This phenomenon is the generation and evolution of magnetic fields in the Sun’s convection zone, the photosphere. It is only by the careful enumeration and description of the phenomena and their variations that one can clarify their interdependences. The sunspot cycle has been tracked back about four centuries, and it has been recognized that to make this data set a really useful tool in understanding how the activity cycle works and how it can be predicted, a very careful and detailed effort is needed to generate sunspot numbers. This book deals with this topic, together with several others that present related phenomena that all indicate the physical processes that take place in the Sun and its exterior environment. The reviews in the book also present the latest theoretical and modelling studies that attempt to explain the activity cycle. It remains true, as has been shown in the unexpected characteristics of the first two solar cycles in the 21st century, that predictability remains a serious challenge. Nevertheless, the highly expert and detailed reviews in this book, using the very best solar observations from both ground- and space based telescopes, provide the best possible report on what is known and what is yet to be discovered. Originally published in Space Science Reviews, Vol 186, Issues 1-4, 2014.

Author : International Astronomical Union. Symposium,International Astronomical Union
Publisher : Unknown
Page : 666 pages
File Size : 45,6 Mb
Release : 1999
Category : Science
ISBN : UOM:39015053537745

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Asymptotic Giant Branch Stars by International Astronomical Union. Symposium,International Astronomical Union Pdf

The nonprofit Astronomical Society of the Pacific (ASP) publishes the Conference Series Proceedings as part of its century-old mission to provide resources for astronomers and advance the science of astronomy. Since 1988, the ASP has published the proceedings of astronomical workshops, meetings, colloquia, and symposia to meet the community's demand for affordable, high-quality volumes on current topics in the rapidly expanding fields of astronomy and astrophysics. Since 1998, the Society has also served as publisher for the International Astronomical Union (IAU), adding their Symposia, Highlights, and Transactions to our growing list of publications.For most rapid delivery of each volume, we encourage libraries and astronomy departments to place a Standing Order for the ASP Conference Series and/or the IAU Publications. Standing Orders are shipped directly from the printer and customers receive volumes at the same discounted rates as ASP members (approximately 25-35 ASP volumes each year and/or 5 IAU Symposia). Please refer to the order form to take advantage of this time-saving offer.We encourage all professionals who are sponsoring conferences, workshops, or colloquia to inquire about publishing these proceedings with the ASP. We provide quality volumes at less than half the price of comparable titles from other major publishers, ensuring that the publication will be available to a wider audience of budget-conscious scientists.Held in Montpellier, France, 27 August - 1 September 1998.

Author : Joshua Chadney
Publisher : Springer
Page : 169 pages
File Size : 40,8 Mb
Release : 2017-07-24
Category : Science
ISBN : 9783319633510

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Modelling the Upper Atmosphere of Gas-Giant Exoplanets Irradiated by Low-Mass Stars by Joshua Chadney Pdf

This PhD thesis details the development of a new 1D ionospheric model to describe the upper atmospheres of extrasolar giant plants. The upper atmospheres of Hot Jupiters are subject to extreme radiation conditions that can result in rapid atmospheric escape. The composition and structure of these planets’ upper atmospheres are affected by high-energy emissions from the host star. The nature of these emissions depends on the stellar type and age, making them important factors in understanding the behaviour of exoplanetary atmospheres.

Author : Ana I. Gómez de Castro,Willem Wamsteker
Publisher : Springer Science & Business Media
Page : 171 pages
File Size : 52,6 Mb
Release : 2007-01-30
Category : Science
ISBN : 9781402048395

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Fundamental Questions in Astrophysics: Guidelines for Future UV Observatories by Ana I. Gómez de Castro,Willem Wamsteker Pdf

Modern astrophysics has evolved early phases of discovery and classification to a physics-oriented quest for answers to fundamental problems from cosmology to the origin and diversity of life-sustainable systems in the Universe. Future progress in modern astrophysics requires access to the electromagnetic spectrum in the broadest energy range. This book describes the fundamental problems in modern astrophysics that cannot progress without easy and wide-spread access to modern UV instrumentation.

Author : Joachim E. Trümper,Günther Hasinger
Publisher : Springer Science & Business Media
Page : 496 pages
File Size : 44,8 Mb
Release : 2008-02-05
Category : Science
ISBN : 9783540344124

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The Universe in X-Rays by Joachim E. Trümper,Günther Hasinger Pdf

With contributions from leading scientists in the field, and edited by two of the most prominent astronomers of our time, this is a totally authoritative volume on X-ray astronomy that will be essential reading for everyone interested – from students to astrophysicists and physicists. All the aspects of this exciting area of study are covered, from astronomical instrumentation to extragalactic X-ray astronomy.

Author : Henny J. G. L. M. Lamers,Joseph P. Cassinelli
Publisher : Cambridge University Press
Page : 456 pages
File Size : 49,5 Mb
Release : 1999-06-17
Category : Nature
ISBN : 0521595657

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Introduction to Stellar Winds by Henny J. G. L. M. Lamers,Joseph P. Cassinelli Pdf

The first comprehensive introduction to the observations and theories of stellar winds; a long-awaited graduate textbook, written by two founders of the field.