Multimode Stellar Pulsations

Multimode Stellar Pulsations PDF Author: G. Kovacs
Publisher:
ISBN: 9780569091930
Category :
Languages : en
Pages : 300

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Multimode Stellar Pulsations

Multimode Stellar Pulsations PDF Author: G. Kovacs
Publisher:
ISBN: 9780569091930
Category :
Languages : en
Pages : 300

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Multimode Stellar Pulsations

Multimode Stellar Pulsations PDF Author: Géza Kovács
Publisher:
ISBN:
Category : Pulsating stars
Languages : en
Pages : 324

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Stellar Pulsation - Nonlinear Studies

Stellar Pulsation - Nonlinear Studies PDF Author: Mine Takeuti
Publisher: Springer Science & Business Media
ISBN: 9401596980
Category : Science
Languages : en
Pages : 237

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Book Description
Stellar pulsations provide a complex system in stars. This complexity is studied by analyzing the non-sinusoidal, semi-regular, or irregular light curves. This unique volume summarizes the application of recent theoretical results obtained from stellar pulsation studies. In addition, the latest developments in hydrodynamic simulations are discussed. A historical sketch of the study of beat Cepheids, first known for their variable amplitudes, is given as an introduction to the book. This introduction clearly demonstrates how complicated the study of variable stars can be, and therefore challenges and invites the reader to study the entire book.

New Perspectives on Stellar Pulsation and Pulsating Variable Stars

New Perspectives on Stellar Pulsation and Pulsating Variable Stars PDF Author: James M. Nemec
Publisher: Cambridge University Press
ISBN: 9780521443821
Category : Science
Languages : en
Pages : 474

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Book Description
How can the interior of the Sun, white dwarfs and other stars be studied by stellar seismology? What can Doppler imaging tell us about high-degree pulsations? What impact are CCD and infrared observations having on extending the Cepheid and RR Lyrae distance scale? And how are other classes of pulsators providing independent checks of the distance scale? These and many other critical questions are answered in this timely review of the dramatic advances made in pulsating star research in the last decade. This survey collects together more than thirty comprehensive reviews and over one hundred summaries of research papers from the 139th IAU Colloquium, held in Victoria, British Columbia. Together these cover all aspects of recent developments in the field of variable star research and preview some of the exciting advances anticipated for the next decade. This volume provides an essential review for graduate students and researchers.

Application of Two-time Methods in Stellar Pulsations

Application of Two-time Methods in Stellar Pulsations PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
The method of two-time expansions is extended to include the effects of the outer, non-adiabatic layers in stellar pulsation. The evolution of pulsating stellar models can be examined, including the approach to limit cycle behavior. The method is demonstrated by a calculation of the eigenvectors for a .beta. Cepheid model. It is argued that the method is promising as a practical tool for treating the approach to limiting oscillations, as well as resonant and multimode behavior.

The Numerical Modelling of Nonlinear Stellar Pulsations

The Numerical Modelling of Nonlinear Stellar Pulsations PDF Author: J. Robert Buchler
Publisher: Springer Science & Business Media
ISBN: 940090519X
Category : Science
Languages : en
Pages : 372

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Book Description
This interdisciplinary meeting has brought together a group of astrophysicists with hands-on experience in the numerical computation of astrophysical fluid dynamics, in particular nonlinear stellar pulsations, and a group of applied mathematicians who are actively engaged with the development of novel and improved numerical methods. The goal of the workshop has been for the astrophysicists to discuss in detail the numerical problems encountered in the modelling of stellar pulsations and for the mathematicians to present a survey of recent developments in numerical techniques. This astrophysical-mathematical intercourse will help the astrophysicists in the future development of more reliable and efficient codes, on the one hand, and it has introduced the mathematicians to an unfamiliar area which is a tough testing ground for their techniques. Since the difficulties encountered are common to other fluid dynamics problems, and are in fact perhaps more severe, fluid dynamicists in other research areas may fmd the results of this workshop of interest as well. Much of our theoretical understanding of the intricate and interesting behavior of variable stars rests on our ability to perform accurate numerical hydrodynamical computations of stellar models. Extensive calculations of nonlinear radial stellar pulsations with the use of increasingly powerful computers are showing more and more clearly that the numerical codes in current use have serious deficiencies.

Nonlinear Phenomena in Stellar Variability

Nonlinear Phenomena in Stellar Variability PDF Author: Mine Takeuti
Publisher: Springer Science & Business Media
ISBN: 940111062X
Category : Science
Languages : en
Pages : 344

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Book Description
The nonlinear theory of oscillating systems brings new aspects into the study of variable stars. Beyond the comparison of linear periods and the estimate of stability, the appearance and disappearance of possible modes can be studied in detail. While nonlinearity in stellar pulsations is not a very complicated concept, it generally requires extensive and sometimes so phisticated numerical studies. Therefore, the development of appropriate computational tools is required for applications of nonlinear theory to real phenomena in variable stars. Taking trends in variable star studies into consideration, the International Astronomical Union organized a colloquium for the nonlinear phenomena of variable stars at Mito, Japan in 1992. The colloquium served to give an overview of the new frontiers of variable star studies and to encourage further development of this field. The colloquium covered the fundamental theory, interesting observational facts, and the numerical modeling. The publication of the proceedings was somewhat delayed since one of the editors, M. T., was overwhelmed by administrative work. We are sorry that the excellent reviews of Drs. H. :Mori, M. Sano, and K. Makishima cannot be found in the proceedings. We also miss the summary given by Dr. W. W. Dziembowski. Throughout the editing procedure Dr. Y. Tanaka of Ibaraki University kindly helped us. Because of the unfortunate delay of the publication~ the significance of several papers may be affected. Even so, we believe that the papers are useful to variable star researchers because of their scientific importance.

Stellar Pulsations

Stellar Pulsations PDF Author: J.C. Suárez
Publisher: Springer Science & Business Media
ISBN: 3642296300
Category : Science
Languages : en
Pages : 285

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Book Description
Analyses of photometric time series obtained from the MOST, CoRoT and Kepler space missions were presented at the 20th conference on Stellar Pulsations (Granada, September 2011). These results are leading to a re-appraisal of our views on stellar pulsation in some stars and posing some new and unexpected challenges. The very important and exciting role played by innovative ground-based observational techniques, such as interferometric measurements of giant pulsating stars and high-resolution spectroscopy in the near infrared, is also discussed. These Proceedings are distinguished by the format of the conference, which brings together a variety of related but different topics not found in other meetings of this nature.

Exploring Multimode Pulsation in Classical Cepheid Stars

Exploring Multimode Pulsation in Classical Cepheid Stars PDF Author: Jay Allison
Publisher:
ISBN:
Category : Astronomy
Languages : en
Pages : 0

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Theory of Stellar Pulsation. (PSA-2), Volume 2

Theory of Stellar Pulsation. (PSA-2), Volume 2 PDF Author: John P. Cox
Publisher: Princeton University Press
ISBN: 140088585X
Category : Science
Languages : en
Pages : 396

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Book Description
Covering both radial and nonradial oscillations, this book includes not only a thorough treatment of the basic theory of stellar pulsation but also a comprehensive synthesis of the most recent work done in this area. Originally published in 1980. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.