Cataclysmic Variable Stars How and Why They Vary

This text presents numerous illustrations of the observed variability of cataclysmic variable stars.

Author: Coel Hellier

Publisher: Springer Science & Business Media

ISBN: 1852332115

Category: Science

Page: 210

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This text presents numerous illustrations of the observed variability of cataclysmic variable stars. It provides a clear explanation and thorough up-to-date overview of this phenomena at a level accessible to the advanced amateur or undergraduate student.
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Cataclysmic Variable Stars

amplitude is greater and the y - velocity itself varies with a period Py and amplitude K , measured variously at ~ 250 kms- ' ( Vogt 1982 ) or ~ 80 km s- ' ( Honey et al . 1988 ) . Similar RV results have been found for the broad ...

Author: Brian Warner

Publisher: Cambridge University Press

ISBN: 052154209X

Category: Science

Page: 596

View: 329

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This timely volume provides the first comprehensive survey of cataclysmic variable stars, integrating theory and observation into a single, synthesised text.
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Astrophysics Update

References Andronov N. , Pinsonneault M. , Sills A. , 2003 , Cataclysmic variables : an empirical angular momentum loss ... D'Antona F. , Burderi , L. , eds , p.157 Hellier C. , 2001a , Cataclysmic variable stars : how and why they vary ...

Author: John Mason

Publisher: Springer Science & Business Media

ISBN: 3540406425

Category: Science

Page: 314

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Written by leading exponents in the field, this collection of timely reviews presents observational methods and the latest results of astronomical research as well as their theoretical foundations and interrelations, providing information and scientifically rigorous coverage.
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Cataclysmic Cosmic Events and How to Observe Them

Cataclysmic. Variables. Gary Poyner's web pages: www.garypoyner.pwp.blueyonder.co.uk/varstars.html Mike Simonsen's pages: http://home.mindspring.com/$mikesimonsen/ ... Cataclysmic Variable Stars – How and Why They Vary by Coel Hellier.

Author: Martin Mobberley

Publisher: Springer Science & Business Media

ISBN: 038779946X

Category: Science

Page: 240

View: 534

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In the Victorian era – or for non-British readers, the mid-to-late nineteenth century – amateur astronomy tended to center on Solar System objects. The Moon and planets, as well as bright comets, were the key objects of interest. The brighter variable stars were monitored, but photography was in its infancy and digital imaging lay a century in the future. Today, at the start of the twenty-first century, amateurs are better equipped than any professionals of the mid-twentieth century, let alone the nineteenth. An amateur equipped with a 30-cm telescope and a CCD camera can easily image objects below magnitude 20 and, from very dark sites, 22 or 23. Such limits would have been within the realm of the 100- and 200-inch reflectors on Mount Wilson and Mount Palomar in the 1950s, but no other observatories. However, even those telescopes took hours to reach such limits, and then the photographic plates had to be developed, fixed, and examined by eye. In the modern era digital images can be obtained in minutes and analyzed ‘on the fly’ while more images are being downloaded. Developments can be e-mailed to other interested amateurs in real time, during an observing session, so that when a cataclysmic event takes place amateurs worldwide know about it. As recently as the 1980s, even professional astronomers could only dream of such instantaneous communication and proc- sing ability.
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Observing Variable Stars Novae and Supernovae

Cataclysmic Variable Stars : How and Why They Vary , Coel Hellier , Springer - Praxis , 2001 . Cataclysmic Variable Stars ( Cambridge Astrophysics ) , edited by Brian Warner , Cambridge University Press , 2003 .

Author: Gerald North

Publisher: Cambridge University Press

ISBN: 0521820472

Category: Nature

Page: 230

View: 874

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Describes variable stars and other objects of variable brightness and offers advice on finding and observing them, including advice on equipment to use, methods to achieve successful observations, and photometry.
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Cataclysmic Variables Recent Multi Frequency Observations and Theoretical Developments

We describe a method for imaging the accretion disc of a Cataclysmic Variable star. We use the two-dimensional information contained in the line profiles as they vary with phase to invert the line formation process.

Author: H. Drechsel

Publisher: Springer Science & Business Media

ISBN: 9789400938014

Category: Science

Page: 806

View: 242

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Recent advances in observational and theoretical efforts in understanding the nature of cataclysmic variables had reached such maturity that there existed a strong, shared feeling among the workers in this field that an international colloquium sponsored by the International Astronomical Union would be timely. To be more specific, this was due primarily to the accumulation of the new data from satellite observatories, such as the International Ultraviolet Observatory (IUE) and EXOSAT, as well as ground-based optical and radio telescopes, and the advances in modeling the putative accretion disks and the thermo-nuclear run-away phenomena in the vinicity of the white dwarf stars in cataclysmic variables. A series of workshops on this subject held in North America over the past several years and that held in Europe in 1985 had all contributed to the advances in our knowledge that led to IAU Colloguium No. 93, held in Bamberg from the 16th to 19th of June 1986. In all, 157 astronomers from 27 countries participated in this conference. Judging from the papers presented, both invited and contributed, and from the enthusiasm seen in discussions, the meeting was indeed a success.
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David Levy s Guide to Variable Stars

Cataclysmic Variable Stars : How and Why They Vary . Berlin : Springer , 2001. A worthy source of information for these stars at the forefront of modern astrophysics . Hoffmeister , C. , Richter , G. and Wenzel , W. Variable Stars ...

Author: David H. Levy

Publisher: Cambridge University Press

ISBN: 0521608600

Category: Nature

Page: 262

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In this highly accessible book David Levy teaches the reader how variable stars work, and how to observe them.
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A Practical Guide to Lightcurve Photometry and Analysis

Binary Stars: A Pictorial Atlas. Dirk Terrell et al. pp. 383. Krieger Publishing Co. Cataclysmic Variable Stars. Brian Warner. pp. 592. Cambridge University Press. Cataclysmic Variable Stars: How and Why They Vary. Coel Hellier. pp 210.

Author: Brian D. Warner

Publisher: Springer

ISBN: 9783319327501

Category: Science

Page: 410

View: 335

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Tools for amateur astronomers who wish to go beyond CCD imaging and step into ‘serious’ science. The text offers techniques for gathering, analyzing, and publishing data, and describes joint projects in which amateurs and students can take part. Readers learn to recognize and avoid common errors in gathering photometry data, with detailed examples for analysis. Includes reviews of available software, with screen shots and useful tips.
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Encyclopedia of Astronomy Astrophysics

In effect, a rotating beam sweeps across the surface of the disk—and also the side of the companion star pointing ... Bibliography Hellier C 2001 Cataclysmic Variable Stars: How and Why They Vary (Praxis) Warner B 1995 Cataclysmic ...

Author: P Murdin

Publisher: CRC Press

ISBN: 9781000523034

Category: Science

Page: 328

View: 975

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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.
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Observational and Theoretical Studies on Dwarf nova Outbursts

A new stellar outburst associated with the magnetic activities of the K-type dwarf in a white dwarf binary. ApJ, 848, 131. 29. ... Catalog of variable stars. III. ... Cataclysmic variable stars: How and why they vary.

Author: Mariko Kimura

Publisher: Springer Nature

ISBN: 9789811589126

Category:

Page:

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Accretion Processes in Astrophysics

Modelling of the magnetic accretion flow in HU Aquarii. ... I – Discovery of a new mode of soft X-ray emission. ... Cataclysmic Variable Stars – How and Why they Vary (Springer Praxis Books / Space Exploration), Springer.

Author: Ignacio González Martínez-País

Publisher: Cambridge University Press

ISBN: 9781107030190

Category: Science

Page: 314

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It has been more than fifty years since the first significant paper on accretion flows was written. In recent years, X-ray satellites capable of identifying accretion disks and radiation jets - indications that accretion has taken place - have significantly advanced our understanding of these phenomena. This volume presents a comprehensive and up-to-date introduction to the major theoretical and observational topics associated with accretion processes in astrophysics. Comprising lectures presented at the twenty-first Winter School of the Canary Islands Institute of Astrophysics, the text emphasises the physical aspects of accretion, investigating how radiation jets are produced, how accretion power is divided between jets and radiated energy, the geometry of accretion flow, and the accretion processes of active galactic nuclei. Written by an international team of experienced scientists, chapters offer young researchers key analytical tools for supporting and carrying out the next generation of front-line research.
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Dictionary of Geophysics Astrophysics and Astronomy

Another kind of cataclysmic variable star is the flare star, whose prototype is UV Ceti. ... primary (with the exception of magnetic variables). cataclysmic variables [physical parameters] The luminosities of cataclysmic variables vary ...

Author: Richard A. Matzner

Publisher: CRC Press

ISBN: 9781420050233

Category: Science

Page: 536

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The Dictionary of Geophysics, Astrophysics, and Astronomy provides a lexicon of terminology covering fields such as astronomy, astrophysics, cosmology, relativity, geophysics, meteorology, Newtonian physics, and oceanography. Authors and editors often assume - incorrectly - that readers are familiar with all the terms in professional literature. With over 4,000 definitions and 50 contributing authors, this unique comprehensive dictionary helps scientists to use terminology correctly and to understand papers, articles, and books in which physics-related terms appear.
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Observer s Guide to Variable Stars

For some cataclysmic variable stars, the subtypes of NL or “nova-like” are designated NL/V, ... However, their main variable feature is a deep plunge from their normal magnitude to something very dim; then they are included in the ...

Author: Martin Griffiths

Publisher: Springer

ISBN: 9783030009045

Category: Science

Page: 316

View: 180

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This book contains everything you need to know about variable stars -- stars whose brightness varies noticeably over time. The study of variable stars has been a particularly popular area of research for amateurs for many years; the material contained herein serves as both an introduction to amateur astronomers and a useful reference source for seasoned variable star observers. With its thorough, non-mathematical descriptions of variable stars and tips for how to see them, this book enables novices and experts alike to set off into the field and observe a wide range of delightful sights. It strikes a balance between easily visible objects that can be seen in any telescope or binoculars, and variable stars that are a direct challenge to those with large aperture equipment or access to photometric tools and methods. After helping the observer differentiate between variable star types, the author goes on to explain the skills needed to operate a telescope and other equipment, as well as how to couple filters to a CCD camera or digital SLR camera in order to photometrically record these celestial objects. Further, the book includes an observational guide to 50 objects for study, with finder charts and data about light curves for ease of identification, along with the stars’ celestial coordinates, magnitudes, and other pertinent information.
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Encyclopedia of Space

Stars that vary in brightness are known as variable stars. In some variables, such as pulsating, ... Others, such as eruptive and cataclysmic variables, are more unpredictable in their behaviour. A star may vary because it gives out ...

Author: Heather Couper

Publisher: Dorling Kindersley Ltd

ISBN: 9781405359146

Category: Juvenile Nonfiction

Page: 304

View: 911

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Blast off into space to discover the galaxies and beyond with the new edition of this out-of-this-world reference Send your child on an amazing journey into space. They'll see the Hubble telescope orbiting the Earth, discover the birth of our solar system and follow the search for life on Mars. Packed with practical tips for the amateur astronomer, spectacular images from space, detailed charts and fantastic facts. Perfect for home or school, there are even instructions on building a simple telescope.
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Pulsating Stars

Hellier, C. (2001) Cataclysmic Variable Stars: How and Why They Vary, Springer, Berlin. Hełminiak, K.G., Konacki, M., Muterspaugh, M.W., Browne, S.E., Howard, A.W., and Kulkarni, S.R. (2012) New highprecision orbital and physical ...

Author: Márcio Catelan

Publisher: John Wiley & Sons

ISBN: 9783527655205

Category: Science

Page: 472

View: 229

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This book surveys our understanding of stars which change in brightness because they pulsate. Pulsating variable stars are keys to distance scales inside and beyond the Milky Way galaxy. They test our understanding not only of stellar pulsation theory but also of stellar structure and evolution theory. Moreover, pulsating stars are important probes of the formation and evolution of our own and neighboring galaxies. Our understanding of pulsating stars has greatly increased in recent years as large-scale surveys of pulsating stars in the Milky Way and other Local Group galaxies have provided a wealth of new observations and as space-based instruments have studied particular pulsating stars in unprecedented detail.
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The Universe Revealed

WE $ 28 Cepheids , the RR Lyrae stars , which vary less si dhe M100 is a spiral galaxy in the Cepheid variable stars vary in Virgo cluster of galaxies . It is brightness over a period of a precisely . As a result of the Hubble thought ...

Author: Pam Spence

Publisher: Cambridge University Press

ISBN: 0521642396

Category: Science

Page: 192

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Cosmologists and astronomers offer information on the solar system, cosmology, global warming, and observational techniques.
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Observing Variable Stars

The first part of the book provides a highly detailed account of the various classes of variable star, with examples, illustrations and physical descriptions.

Author: Gerry A. Good

Publisher: Springer Science & Business Media

ISBN: 9781447100553

Category: Science

Page: 284

View: 751

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Observing variable stars is one of the major contributions amateur astronomers make to science. There are 36,000 variable stars listed in the General Catalogue of Variable Stars, so it is clearly impossible for the limited number of professional observatories to target even the majority of them. That's where amateur astronomers come in - thousands of them turning their telescopes to the sky every night. Variable star observing is the most popular of "real science" activities for amateurs, and Gerry Good's book provides everything needed. The first part of the book provides a highly detailed account of the various classes of variable star, with examples, illustrations and physical descriptions. The second section covers practical aspects of observing, everything from preparation and planning, through observing techniques, to data management and reduction.
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The Big Bang

Cataclysmic variable stars : how and why they vary , Coel Hellier , Springer - Praxis , 2001 . The theory of everything : the origin and fate of the universe , Stephen Hawking , New Millennium Press , 2002 . Aeons : the search for the ...

Author: David M. Harland

Publisher: Springer Science & Business Media

ISBN: 1852337133

Category: Science

Page: 262

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The first up-to-date book written for the popular enthusiast market which describes the development of modern particle physics and its importance in improving our understanding of the origin and evolution of the Universe.
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The Beginning and the End

The Meaning of Life in a Cosmological Perspective Clément Vidal. Haley, Andrew Gallagher: Space Law and ... Springer, Heidelberg (2009) Hellier, C.: Cataclysmic Variable Stars: How and Why They Vary. Springer, Berlin (2001) Henderson, ...

Author: Clément Vidal

Publisher: Springer

ISBN: 9783319050621

Category: Science

Page: 379

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In this fascinating journey to the edge of science, Vidal takes on big philosophical questions: Does our universe have a beginning and an end or is it cyclic? Are we alone in the universe? What is the role of intelligent life, if any, in cosmic evolution? Grounded in science and committed to philosophical rigor, this book presents an evolutionary worldview where the rise of intelligent life is not an accident, but may well be the key to unlocking the universe's deepest mysteries. Vidal shows how the fine-tuning controversy can be advanced with computer simulations. He also explores whether natural or artificial selection could hold on a cosmic scale. In perhaps his boldest hypothesis, he argues that signs of advanced extraterrestrial civilizations are already present in our astrophysical data. His conclusions invite us to see the meaning of life, evolution and intelligence from a novel cosmological framework that should stir debate for years to come.
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The New Amateur Astronomer

Cataclysmic variables (CVs) are double stars, orbiting each other in such close proximity that material flows between them, producing outbursts and variability unlike any other category of variable star. They can vary in time-scales of ...

Author: Martin Mobberley

Publisher: Springer Science & Business Media

ISBN: 9781447106395

Category: Science

Page: 229

View: 287

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Amateur astronomy has changed beyond recognition in less than two decades. The reason is, of course, technology. Affordable high-quality telescopes, computer-controlled 'go to' mountings, autoguiders, CCD cameras, video, and (as always) computers and the Internet, are just a few of the advances that have revolutionized astronomy for the twenty-first century. Martin Mobberley first looks at the basics before going into an in-depth study of what’s available commercially. He then moves on to the revolutionary possibilities that are open to amateurs, from imaging, through spectroscopy and photometry, to patrolling for near-earth objects - the search for comets and asteroids that may come close to, or even hit, the earth. The New Amateur Astronomer is a road map of the new astronomy, equally suitable for newcomers who want an introduction, or old hands who need to keep abreast of innovations. From the reviews: "This is one of several dozen books in Patrick Moore's "Practical Astronomy" series. Amid this large family, Mobberley finds his niche: the beginning high-tech amateur. The book's first half discusses equipment: computer-driven telescopes, CCD cameras, imaging processing software, etc. This market is changing every bit as rapidly as the computer world, so these details will be current for only a year or two. The rest of the book offers an overview of scientific projects that serious amateurs are carrying out these days. Throughout, basic formulas and technical terms are provided as needed, without formal derivations. An appendix with useful references and Web sites is also included. Readers will need more than this book if they are considering a plunge into high-tech amateur astronomy, but it certainly will whet their appetites. Mobberley's most valuable advice will save the book's owner many times its cover price: buy a quality telescope from a reputable dealer and install it in a simple shelter so it can be used with as little set-up time as possible. A poor purchase choice and the hassle of setting up are why most fancy telescopes gather dust in their owners' dens. Summing Up: Highly recommended. General readers; lower- and upper-division undergraduates."( T. D. Oswalt, CHOICE, March 2005)
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