Описание: This book presents novel observational evidence toward detecting and characterizing the products of massive, interacting binary stars. As a majority of massive stars are born in close binary systems, a large number of so-called massive binary interaction products are predicted to exist; however, few have been identified so far. Based on observations with the largest telescopes around the world, equipped with state-of-the-art instrumentation, this book helps to remedy this situation. In her outstanding PhD-thesis Julia Bodensteiner identifies a new class of post-interaction binaries in a short-lived phase just briefly after the initially more massive star has been stripped of part of its envelope. She further provides new evidence for the Be phenomenon to largely result from binary interactions. These results represented a new and testable prediction for the evolution of these stars and opened up a new way forward for identifying hundreds of post-interaction products. Finally, using the MUSE integral field spectrograph at the Very Large Telescope in Chile, the author presents a novel spectroscopic campaign focusing on the 40 Myr-old star cluster NGC 330 in the Small Magellanic Clouds. Combined with photometric observations from the Hubble Space Telescope, the MUSE data allow to characterize the entire massive star population of NGC 330, revealing their multiplicity properties and rotational velocities and providing unique observational constraints on their (binary) evolution history. This is made possible by the developments of novel numerical methods allowing to extract star spectra from the MUSE integral field spectroscopic data and to characterize their properties by the simultaneous comparison of MUSE spectroscopy and Hubble photometry with atmospheric models. This book is a partly re-written version of the author's thesis offering a highly readable coherent text presenting not only new insights into the properties of binary interaction products but also giving students an excellent introduction into the field.
Автор: Burns, M. Shane Название: A Practical guide to observational astronomy ISBN: 0367768631 ISBN-13(EAN): 9780367768638 Издательство: Taylor&Francis Рейтинг: Цена: 12707.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: A Practical Guide to Observational Astronomy provides a practical and accessible introduction to the ideas and concepts that are essential to making and analyzing astronomical observations.
Автор: Jos? M. Vilchez; Grazyna Stasinska; Enrique P?rez Название: The Evolution of Galaxies ISBN: 9048158214 ISBN-13(EAN): 9789048158218 Издательство: Springer Рейтинг: Цена: 34029.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Galaxies have a history. This has become clear from recent sky surveys showing that distant galaxies, formed early in the life of the Universe, differ from the nearby ones. This book contains the proceedings of a 2000 conference addressing observational clues in this area.
Описание: Developing several novel observational techniques, Harrison demonstrated that energetic winds driven by Active Galactic Nuclei (AGN) are found in a large number of galaxies, with properties in agreement with model predictions. Leading theoretical models predict that AGN drive energetic winds into galaxies, regulating the formation of stars.
Описание: Developing several novel observational techniques, Harrison demonstrated that energetic winds driven by Active Galactic Nuclei (AGN) are found in a large number of galaxies, with properties in agreement with model predictions. Leading theoretical models predict that AGN drive energetic winds into galaxies, regulating the formation of stars.
Part I: Introduction and Motivation.- 1. Introduction and Motivation.- Part II: New and Refined Observational Evidences of Kappa Distributions in Space Plasmas.- 2. Suprathermal Populations and Their Effects in Space Plasmas: Kappa vs. Maxwellian.- 3. Electron Kappa Distributions in the Solar Wind: Cause of the Acceleration or Consequence of the Expansion?.- 4. Diagnostics of Kappa Distributions from Optically Thin Solar Spectra.- 5. Non-thermal and Kappa Distributions in Solar Flare Radiative Signatures.- Part III: Physics Behind and Significance of Kappa Distributions in Plasma Astrophysics.- 6. Kappa Distribution Function: From Empirical to Physical Concepts.- 7. Kinetic Models of Wave-Electron Interaction in the Solar Corona and Wind.- 8. On 'Isobaric and Isentropic' Distribution Functions of Plasma Particles in the Heliosheath.- 9. Advanced Numerical Tools for Studying Waves and Instabilities in Kappa Distributed Plasmas.- 10. Advanced Interpretation ofWaves and Instabilities in Space Plasmas.- Part IV: Fundamental Aspects, Generalized Kappa Distributions, and Their Implications.- 11. Mathematical and Physical Characteristics of the Kappa Velocity Distribution.- 12. Non-equilibrium Statistical Mechanics of Electron Kappa Distribution.- 13. Regularized Kappa Distributions: Linear Dispersion and Stability Theory.- 14. Kappa Distributions and Entropy.- 15. From Standard Kappa to a Regularized Kappa, or Even More Generalized Kappa "Cookbook".- Part V: Concluding Remarks and Future Perspectives.- 16. Kappa Distributions: Concluding Remarks and Perspectives.
Автор: Kimura Mariko Название: Observational and Theoretical Studies on Dwarf-nova Outbursts ISBN: 9811589143 ISBN-13(EAN): 9789811589140 Издательство: Springer Рейтинг: Цена: 12196.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This book studies four types of newly detected outbursts in dwarf novae through optical observations and/or numerical simulations and puts forward physical interpretations of these outbursts on the basis of the disk instability model, the most plausible model for dwarf-nova outbursts.
Автор: Z. Mouradian; Magda Stavinschi Название: Theoretical and Observational Problems Related to Solar Eclipses ISBN: 9401063117 ISBN-13(EAN): 9789401063111 Издательство: Springer Рейтинг: Цена: 6097.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Proceedings of the NATO Advanced Research Workshop, Bucharest, Romania, 1-5 June 1996
Описание: This book studies four types of newly detected outbursts in dwarf novae through optical observations and/or numerical simulations and puts forward physical interpretations of these outbursts on the basis of the disk instability model, the most plausible model for dwarf-nova outbursts.
Автор: Gallaway Mark Название: An Introduction to Observational Astrophysics ISBN: 3030435504 ISBN-13(EAN): 9783030435509 Издательство: Springer Рейтинг: Цена: 6097.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Compares structural and Bayesian models to the random walk benchmark in forecasting exchange rates between South American currencies and the US Dollar, and between the Paraguayan Guarani, Brazilian Real and Argentinian Peso. Forecasts are evaluated using the criteria of Root Mean Square Error, Direction of Change, and the Diebold-Mariano statistic.
Автор: Ivezic?, Z?eljko, Название: Statistics, data mining, and machine learning in astronomy : ISBN: 0691198306 ISBN-13(EAN): 9780691198309 Издательство: Wiley Рейтинг: Цена: 12989.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание:
Statistics, Data Mining, and Machine Learning in Astronomy is the essential introduction to the statistical methods needed to analyze complex data sets from astronomical surveys such as the Panoramic Survey Telescope and Rapid Response System, the Dark Energy Survey, and the Large Synoptic Survey Telescope. Now fully updated, it presents a wealth of practical analysis problems, evaluates the techniques for solving them, and explains how to use various approaches for different types and sizes of data sets. Python code and sample data sets are provided for all applications described in the book. The supporting data sets have been carefully selected from contemporary astronomical surveys and are easy to download and use. The accompanying Python code is publicly available, well documented, and follows uniform coding standards. Together, the data sets and code enable readers to reproduce all the figures and examples, engage with the different methods, and adapt them to their own fields of interest.
An accessible textbook for students and an indispensable reference for researchers, this updated edition features new sections on deep learning methods, hierarchical Bayes modeling, and approximate Bayesian computation. The chapters have been revised throughout and the astroML code has been brought completely up to date.
Fully revised and expanded
Describes the most useful statistical and data-mining methods for extracting knowledge from huge and complex astronomical data sets
Features real-world data sets from astronomical surveys
Uses a freely available Python codebase throughout
Ideal for graduate students, advanced undergraduates, and working astronomers
Автор: Sandip K. Chakrabarti Название: Observational Evidence for Black Holes in the Universe ISBN: 9401059950 ISBN-13(EAN): 9789401059954 Издательство: Springer Рейтинг: Цена: 6097.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Proceedings of a conference held in Calcutta, India, January 10-17, 1998
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