viotti roberto (27 Ergebnisse)

Zustand: Gut. 22 Seiten; Der hier angebotene Sonderdruck ist informativ und kurz gehalten. Er stammt aus der Separaten-Sammlung einer wissenschaftlichen Bibliothek und trägt einen den Text nicht verdeckenden Stempel. Insgesamt ordentlicher Erhaltungszustand. Aufgrund der Rarität und des geringen Umfangs des Werkes bitten wir um Verständnis, dass dieser Sonderdruck vom Rückgaberecht ausgeschlossen ist. Sprache: Deutsch Gewicht in Gramm: 80.

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Taschenbuch. Zustand: Neu. The Symbiotic Phenomenon | Proceedings of the 103rd Colloquium of the International Astronomical Union, Held in Torun, Poland, August 18-20, 1987 | Joanna Mikolajewska (u. a.) | Taschenbuch | Astrophysics and Space Science Library | 380 S. | Englisch | 2011 | Springer | EAN 9789401078337 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Symbiotic stars were identified spectroscopically as M giants with a very strong He II 4686 emission line. After five decades of study by many astronomers, the first internatioinal meetings devoted to symbiotics were held at the University of Colorado (Boulder) and at the Haute Provence Observatory during the Summer of 1981. These conferences emphasized exciting new results obtained by modern satellite (EINSTEIN, IUE) and ground-based observatories. Although the vast majority of the participants were already fairly sure that symbiotics are almost certainly interacting binary systems, and not extremely peculiar single stars, it was not clear exactly which types of physical processes were needed to be invoked to explain their observed behaviour. Many were even worried that it might not be possible to clearly define a class of 'symbiotic stars' , and thus establish a unique model applicable to any system. Since the publication of the Haute-Provence proceedings, our understanding of the physical processes occuring in symbiotic stars (and in related objects such as cataclysmic variables and compact planetary nebulae) has greatly improved. We now speak confidently of a 'symbiotic phenomenon' , in which an evolved red giant and a hot companion object (usually thought to be an accreting main sequence star or a luminous white dwarf star) happily coexist.

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Taschenbuch. Zustand: Neu. Physics of Formation of FeII Lines Outside LTE | Proceedings of the 94th Colloquium of the International Astronomical Union Held in Anacapri, Capri Island, Italy, 4-8 July 1986 | Roberto Viotti (u. a.) | Taschenbuch | Astrophysics and Space Science Library | xiii | Englisch | 2014 | Springer | EAN 9789401082853 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu.

Paperback. Zustand: Brand New. 1988 edition. 368 pages. 10.10x7.10x0.90 inches. In Stock.

Taschenbuch. Zustand: Neu. The Nature of Symbiotic Stars | Proceedings of IAU Colloquium No. 70 Held at the Observatoire De Haute Provence, 26-28 August, 1981 | M. Friedjung (u. a.) | Taschenbuch | Astrophysics and Space Science Library | 329 S. | Englisch | 2011 | Springer | EAN 9789400978362 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Satellite observations in various previously unexplored spectral regions have provided a host of data on novae over the last decade. This carefully refereed conference volume is devoted to classical novae and related objects. Around 30 papers discuss observations (basic properties of novae, outbursts, and nebular ejecta), theoretical considerations, and models of observations. In addition the reader will find an introductory review on binary stars by R.P. Kraft and a summary by P. Eggleton of the papers and posters presented at the conference. To help the reader in finding any specific subject or stellar object the volume concludes with a detailed index.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Many aspects of symbiotic stars have long puzzled astronomers. For instance while most students of the subject have considered them binary, many have at different times supported single star models. The nature of their outbursts is uncertain, while the dividing line between symbiotic stars and novae is unclear. In any case doubts can even be raised as to whether a class of 'Symbiotic Stars' really exists. Much new data has been obtained in recent years, in particular from the study of radiation outside the visual region. Many symbiotic stars have been studied in the UV with IUE since 1978, while X-rays were det ected in a few cases with the Einstein satellite. There have been a num ber of infrared and radio studies, and the number of known symbiotic stars has also considerably increased. Furthermore theoretical ideas have in recent years been considerably enriched by concepts of stellar winds, and accretion phenomena in binaries including accretion disks. It was there fore extremely opportune and timely to hold the first international meet ing exclusively devoted to these stars, so as to consider the new results from such a wide range of observations in different spectral regions, and the conclusions which can be drawn for possible models as well as theories of the nature and structure of symbiotic stars. After a session devoted to new observations in different spectral regions, a session was spent considering some individual stars.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - The same kind of physics is frequently common to very different fields of Astrophysics, so experts in each of these fields have often much to learn from each others. It was therefore logical that the International Astronomical Union should sponsor a colloquium about an ion which pro duces many spectral lines that can be used as a diagnostic for many sorts of objects, and which may sometimes have a major influence on physical processes occurring in astro physical sources. The lines of singly ionized iron (FeII) are present in absorption and emission in the spectra of objects such as the Sun, cool stars, circumstellar envelopes of hot stars, novae, diffuse nebulae including the supernova remnants, and active galactic nuclei. These lines are very often formed far from LTE, and their interpretation is not easy in view of the complex Grotrian diagram for FeII, and the gaps in the knowledge of various physical parameters. In addition, the density of very strong FeII lines becomes very large in the ultraviolet, and the lines can play a major role in the line blanketing. They need therefore to be taken into account in any energy balance argument.

Couverture rigide. Zustand: bon. R260269596: 1981. In-8. Relié. Bon état, Couv. convenable, Dos satisfaisant, Intérieur frais. 310 pages augmentées de quelques graphiques en noir et blanc dans texte. . . . Classification Dewey : 420-Langue anglaise. Anglo-saxon.

Taschenbuch. Zustand: Neu. Fear and Uncertainty in Europe | The Return to Realism? | Roberto Belloni (u. a.) | Taschenbuch | xii | Englisch | 2019 | Springer Nature Switzerland | EAN 9783030063375 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Russia's intervention in the Ukraine, Donald Trump's presidency and instability in the Middle East are just a few of the factors that have brought an end to the immediate post-Cold War belief that a new international order was emerging: one where fear and uncertainty gave way to a thick normative and institutional architecture that diminished the importance of material power. This has raised questions about the instruments we use to understand order in Europe and in international relations. The chapters in this book aim to assess whether foreign policy actors in Europe understand the international system and behave as realists. They ask what drives their behaviour, how they construct material capabilities and to what extent they see material power as the means to ensure survival. They contribute to a critical assessment of realism as a way to understand both Europe's current predicament and the contemporary international system.

Buch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Russia's intervention in the Ukraine, Donald Trump's presidency and instability in the Middle East are just a few of the factors that have brought an end to the immediate post-Cold War belief that a new international order was emerging: one where fear and uncertainty gave way to a thick normative and institutional architecture that diminished the importance of material power. This has raised questions about the instruments we use to understand order in Europe and in international relations. The chapters in this book aim to assess whether foreign policy actors in Europe understand the international system and behave as realists. They ask what drives their behaviour, how they construct material capabilities and to what extent they see material power as the means to ensure survival. They contribute to a critical assessment of realism as a way to understand both Europe's current predicament and the contemporary international system.

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