Light Curve Modeling Of Eclipsing Binary Stars

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Light Curve Modeling of Eclipsing Binary Stars

E.F. Milone
Light Curve Modeling of Eclipsing Binary Stars Book PDF

Author : E.F. Milone
Publisher : Springer Science & Business Media
Page : 198 pages
File Size : 49,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9781461227427

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Light Curve Modeling of Eclipsing Binary Stars by E.F. Milone Pdf

In the two decades since the development of the first eclipsing-binary modeling code, new analytic techniques and the availability of powerful, sometimes dedicated computing facilities have made possible vastly improved determinations of fundamental and even transient stellar parameters. The scale of these developments, of course, raises questions about modeling tools, techniques, and philosophies, such as: Who will maintain and upgrade the codes? Will the codes be open to improvement by outsiders, and if so, how? And, indeed, what should be the goals of a modeling program? Such questions had not been aired for a long time and, for this reason alone, deserved to be discussed in as general a forum as the community provides. This volume contains material presented by Commission 42 (Close Binary Stars) during the International Astronomical Union's XXI General Assembly in Argentina, July 1991, and during IAU Colloquium 151, Cordoba, Argentina, August 1991. The techniques discussed include simulations of stellar bright and dark spots, streams, partial and complete stellar disks, prominences, and other features characterizing active stars; modeling of polarization parameters; models that use radial velocities as well as line profile simulations to model velocity field variation across stellar disks; the weighted effects of brightness asymmetries; and models for translucent eclipsing agents such as stellar winds.

Eclipsing Binary Stars

Josef Kallrath,Eugene F. Milone
Eclipsing Binary Stars Book PDF

Author : Josef Kallrath,Eugene F. Milone
Publisher : Springer Science & Business Media
Page : 376 pages
File Size : 53,5 Mb
Release : 2013-11-11
Category : Science
ISBN : 9781475731286

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Eclipsing Binary Stars by Josef Kallrath,Eugene F. Milone Pdf

Focussing on the formulation of mathematical models for the light curves of eclipsing binary stars, and on the algorithms for generating such models, this book provides astronomers, both amateur and professional, with a guide for - specifying an astrophysical model for a set of observations - selecting an algorithm to determine the parameters of the model - estimating the errors of the parameters. It is written for readers with knowledge of basic calculus and linear algebra; appendices cover mathematical details on such matters as optimisation, co-ordinate systems, and specific models. While emphasising the physical and mathematical framework, the discussion remains close to the problems of actual implementation. The book concludes with chapters on specific models and approaches and the authors'views on the structure of future light-curve programs.

Light Curve Modeling of Eclipsing Binary Stars

E F Milone
Light Curve Modeling of Eclipsing Binary Stars Book PDF

Author : E F Milone
Publisher : Unknown
Page : 212 pages
File Size : 40,9 Mb
Release : 1992-12-18
Category : Electronic
ISBN : 1461227437

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Light Curve Modeling of Eclipsing Binary Stars by E F Milone Pdf

In the two decades since the development of the first eclipsing-binary modeling code, new analytic techniques and the availability of powerful, sometimes dedicated computing facilities have made possible vastly improved determinations of fundamental and even transient stellar parameters. The scale of these developments, of course, raises questions about modeling tools, techniques, and philosophies, such as: Who will maintain and upgrade the codes? Will the codes be open to improvement by outsiders, and if so, how? And, indeed, what should be the goals of a modeling program? Such questions had not been aired for a long time and, for this reason alone, deserved to be discussed in as general a forum as the community provides. This volume contains material presented by Commission 42 (Close Binary Stars) during the International Astronomical Union's XXI General Assembly in Argentina, July 1991, and during IAU Colloquium 151, Cordoba, Argentina, August 1991. The techniques discussed include simulations of stellar bright and dark spots, streams, partial and complete stellar disks, prominences, and other features characterizing active stars; modeling of polarization parameters; models that use radial velocities as well as line profile simulations to model velocity field variation across stellar disks; the weighted effects of brightness asymmetries; and models for translucent eclipsing agents such as stellar winds.

Eclipsing Binary Stars

Anonim
Eclipsing Binary Stars Book PDF

Author : Anonim
Publisher : Unknown
Page : 355 pages
File Size : 41,8 Mb
Release : 1998
Category : Eclipsing binaries
ISBN : 1475731302

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Eclipsing Binary Stars by Anonim Pdf

This book focuses on the formulation of mathematical models for the light curves of eclipsing binary stars, and on the algorithms for generating such models. Since information gained from binary systems provides much of what we know of the masses, luminosities, and radii of stars, such models are acquiring increasing importance in studies of stellar structure and evolution. As in other areas of science, the computer revolution has given many astronomers tools that previously only specialists could use; anyone with access to a set of data can now expect to be able to model it. This book will provide astronomers, both amateur and professional, with a guide for - specifying an astrophysical model for a set of observations - selecting an algorithm to determine the parameters of the model - estimating the errors of the parameters It is written for readers with knowledge of basic calculus and linear algebra; appendices cover mathematical details on such matters as optimization, coordinate systems, and specific models. While emphasizing the physical and mathematical framework, the discussion remains close to the problems if actual implementation. It begins with an overview of the problem and a discussion of the observational data that form the basis of any model. The treatment then turns to the direct problem (computing the light curve and other observables from the a given set of parameters) and then to the indirect problem (determining a best-fit set of parameters from the data). The book concludes with chapters on specific models and approaches and the authors' views on the structure of future light- curve programs.

Eclipsing Binary Stars

Andrej Prsa
Eclipsing Binary Stars Book PDF

Author : Andrej Prsa
Publisher : Unknown
Page : 200 pages
File Size : 45,7 Mb
Release : 2018-12-21
Category : Science
ISBN : 0750312882

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Eclipsing Binary Stars by Andrej Prsa Pdf

The fascinating and observationally spectacular world of binary stars is a vast and beautiful one that is a significant aspect of many astrophysical studies. Modeling and Analysis of Eclipsing Binary Stars gives a comprehensive analysis and description of the science behind eclipsing binaries. It also explores the assumptions and the difficulties that can occur when using the modeling principles of the classical codes as well as introducing PHOEBE (the PHysics Of Eclipsing BinariEs)-a modern suite for modeling binary stars. PHOEBE was conceived by Andrej Prša and his collaborators, and has become one of the standard tools in the eclipsing binary field.This book provides a constructive and intriguing contribution to the expansion of the modeling approaches of binaries and our subsequent understanding of the processes that govern stellar evolution. Aimed at a wide audience, Prša provides new astronomers with the knowledge and background of eclipsing binary stars as well as facilitating researchers to a better understanding of the intricate details behind eclipsing binary models.

Modeling and Analysis of Eclipsing Binary Stars

Andrej Prša
Modeling and Analysis of Eclipsing Binary Stars Book PDF

Author : Andrej Prša
Publisher : Unknown
Page : 0 pages
File Size : 41,8 Mb
Release : 2018
Category : Eclipsing binaries
ISBN : 0750312874

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Modeling and Analysis of Eclipsing Binary Stars by Andrej Prša Pdf

"The fascinating and observationally spectacular world of binary stars is a vast and beautiful one that is a significant aspect of many astrophysical studies. Modeling and Analysis of Eclipsing Binary Stars gives a comprehensive analysis and description of the science behind eclipsing binaries. It also explores the assumptions and the difficulties that can occur when using the modeling principles of the classical codes as well as introducing PHOEBE (the PHysics Of Eclipsing BinariEs)--a modern suite for modeling binary stars. PHOEBE was conceived by Andrej Prša and his collaborators, and has become one of the standard tools in the eclipsing binary field."--Source : résumé de l'éditeur.

Photometric and Spectroscopic Binary Systems

E.B. Carling,Zdenek Kopal
Photometric and Spectroscopic Binary Systems Book PDF

Author : E.B. Carling,Zdenek Kopal
Publisher : Springer Science & Business Media
Page : 571 pages
File Size : 41,8 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400984868

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Photometric and Spectroscopic Binary Systems by E.B. Carling,Zdenek Kopal Pdf

Our conference - opening today - has two aims in view: first, to commemorate some milestones in the development of the studies of close binary systems whose anniversaries fall in these years, as well as to take stock of our present knowledge accumulated through out preceding decades, in order to consider where do we go from here. This summer, 310 years will have elapsed since the first ec lipsing binary - Algol - was discovered in Bologna by Geminiano Montanari (1633-1687) to be a variable star; and 198 years have gone by since John Goodricke of York (1764-1786) established the fact that Algol's light changes were periodic. Moreover, it is al most exactly (to a month) now 100 years since Edward Charles Pickering (1846-1919) of Harvard Observatory in the United States took the first steps towards the development of systematic methods of analysis of the light changes of Algol and related systems - a topic which will constitute the major part of the programme of our present conference. The three dates recalled above illustrate that the discoverers of such celestial objects and observers of their light changes have been systematically ahead of the theoreticians endea vouring to understand the significance of the observed data by de cades and centuries in the past - a fact which, incidentally, con tinues to hold good (albeit with a diminishing lead-time) up to the present.

An Introduction to Close Binary Stars

R. W. Hilditch
An Introduction to Close Binary Stars Book PDF

Author : R. W. Hilditch
Publisher : Cambridge University Press
Page : 398 pages
File Size : 44,7 Mb
Release : 2001-03-12
Category : Science
ISBN : 0521798000

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An Introduction to Close Binary Stars by R. W. Hilditch Pdf

This 2001 book was the first to provide a pedagogical and comprehensive introduction to binary stars for advanced students.

Atomic Diffusion in Stars

Georges Michaud,Georges Alecian,Jacques Richer
Atomic Diffusion in Stars Book PDF

Author : Georges Michaud,Georges Alecian,Jacques Richer
Publisher : Springer
Page : 327 pages
File Size : 47,6 Mb
Release : 2015-10-27
Category : Science
ISBN : 9783319198545

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Atomic Diffusion in Stars by Georges Michaud,Georges Alecian,Jacques Richer Pdf

The authors give an overview of atomic diffusion as applied to all types of stars, showing where it plays an essential role and how it can be implemented in modelling. Part I describes the tools that are required to include atomic diffusion in models of stellar interiors and atmospheres. An important role is played by the gradient of partial radiative pressure, or radiative acceleration, which is usually neglected in stellar evolution. In Part II, the authors systematically review the contribution of atomic diffusion to each evolutionary step. The dominant effects of atomic diffusion are accompanied by more subtle effects on a large number of structural properties throughout evolution. The goal of this book is to provide the means for the astrophysicist or graduate student to evaluate the importance of atomic diffusion in a given star. A fundamental physical process, atomic diffusion can significantly affect the superficial abundances of stars and/or their evolution. This guide includes all the information needed to take proper account of atomic diffusion's impact.

Parameter Determination of a Binary Star System

Fabian Prilasnig
Parameter Determination of a Binary Star System Book PDF

Author : Fabian Prilasnig
Publisher : GRIN Verlag
Page : 81 pages
File Size : 45,6 Mb
Release : 2008-03
Category : Electronic
ISBN : 9783638921480

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Parameter Determination of a Binary Star System by Fabian Prilasnig Pdf

Diploma Thesis from the year 2001 in the subject Astronomy, grade: 1,0, Technical University of Graz, 15 entries in the bibliography, language: English, abstract: The focus of this work about binary star systems is on model applications ans selections of an algorithm to determine the parameters of individual binaries. It consists of four major parts: a general introduction to the theory of binary stars; introductory material about spectroscopy and photometry; a description of IRAF (Imaging Reduction and Analysis Facility) - this is a software program which allows the reduction and the analysis of gathered data of astronomical objects - and its application on parameter determination of the binary system UV Leonis. Last but not least follows the presentation of the spectroscopical and photometrical results of this binary star system. The spectroscopical and photometrical results confirm that the components of the binary star system UV Leonis are main-sequence stars having the same spectral type as the Sun. From the radial velocity curves we can conclude that both components must be nearly spherical due to the sinusoidal shape of their radial velocity curves. The characteristics of their B and V light curves tell us that the orbital inclination is a little bit smaller than 90 because of the V-shaped eclipses. Our results agree with the results from the literature, while masses were spectroscopically determined here for the first time. Our value of the distance to UV Leo is consistent with trigonometric parallax from the Hipparcos mission but our error bar is smaller.

Binary Stars as Critical Tools and Tests in Contemporary Astrophysics (IAU S240)

International Astronomical Union. Symposium
Binary Stars as Critical Tools and Tests in Contemporary Astrophysics IAU S240 Book PDF

Author : International Astronomical Union. Symposium
Publisher : Cambridge University Press
Page : 524 pages
File Size : 46,8 Mb
Release : 2007-08-27
Category : Science
ISBN : 0521863481

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Binary Stars as Critical Tools and Tests in Contemporary Astrophysics (IAU S240) by International Astronomical Union. Symposium Pdf

IAU S240 focuses on recent advances across the broad field of binary star research.

Giants of Eclipse: The ζ Aurigae Stars and Other Binary Systems

Thomas B. Ake,Elizabeth Griffin
Giants of Eclipse The Aurigae Stars and Other Binary Systems Book PDF

Author : Thomas B. Ake,Elizabeth Griffin
Publisher : Springer
Page : 202 pages
File Size : 41,9 Mb
Release : 2014-12-30
Category : Science
ISBN : 9783319091983

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Giants of Eclipse: The ζ Aurigae Stars and Other Binary Systems by Thomas B. Ake,Elizabeth Griffin Pdf

The zeta Aurigae stars are the rare but illustrious sub-group of binary stars that undergo the dramatic phenomenon of "chromospheric eclipse". This book provides detailed descriptions of the ten known systems, illustrates them richly with examples of new spectra, and places them in the context of stellar structure and evolution. Comprised of a large cool giant plus a small hot dwarf, these key eclipsing binaries reveal fascinating changes in their spectra very close to total eclipse, when the hot star shines through differing heights of the "chromosphere", or outer atmosphere, of the giant star. The phenomenon provides astrophysics with the means of analyzing the outer atmosphere of a giant star and how that material is shed into space. The physics of these critical events can be explained qualitatively, but it is more challenging to extract hard facts from the observations, and tough to model the chromosphere in any detail. The book offers current thinking on mechanisms for heating a star's chromosphere and on how a star loses mass, and relates this science synergistically to studies of other stars and binaries, and to the increasing relevance of contributions from new techniques in interferometry and asteroseismology. It also includes a detailed discussion of the enigmatic star epsilon Aurigae, which had recently undergone one of its very infrequent and very baffling eclipses. Though not a zeta Aurigae system, epsilon Aurigae is a true "Giant" among eclipsing stars. The 7 chapters of this book, written by a group of experts, have been carefully edited to form a coherent volume that offers a thorough overview of the subject to both professional and student.

The Exoplanet Handbook

Michael Perryman
The Exoplanet Handbook Book PDF

Author : Michael Perryman
Publisher : Cambridge University Press
Page : 973 pages
File Size : 42,8 Mb
Release : 2018-08-30
Category : Science
ISBN : 9781108419772

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The Exoplanet Handbook by Michael Perryman Pdf

A complete and in-depth review of exoplanet research, covering the discovery methods, physics and theoretical background.

Binary Stars

Dirk Terrell,Jaydeep Mukherjee,Robert E. Wilson
Binary Stars Book PDF

Author : Dirk Terrell,Jaydeep Mukherjee,Robert E. Wilson
Publisher : Krieger Publishing Company
Page : 408 pages
File Size : 54,9 Mb
Release : 1992
Category : Science
ISBN : UCSC:32106010206933

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Binary Stars by Dirk Terrell,Jaydeep Mukherjee,Robert E. Wilson Pdf

This atlas provides insight into the makeup of binary star systems. Each page shows one binary star system at about ten positions in its orbit, so as to provide perspective for the viewer as the system turns. It also details fundamental dimensions, mass data and radiative quantities.

New Worlds, New Horizons in Astronomy and Astrophysics

National Research Council,Division on Engineering and Physical Sciences,Space Studies Board,Board on Physics and Astronomy,Committee for a Decadal Survey of Astronomy and Astrophysics
New Worlds New Horizons in Astronomy and Astrophysics Book PDF

Author : National Research Council,Division on Engineering and Physical Sciences,Space Studies Board,Board on Physics and Astronomy,Committee for a Decadal Survey of Astronomy and Astrophysics
Publisher : National Academies Press
Page : 324 pages
File Size : 55,7 Mb
Release : 2011-02-04
Category : Science
ISBN : 9780309157995

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New Worlds, New Horizons in Astronomy and Astrophysics by National Research Council,Division on Engineering and Physical Sciences,Space Studies Board,Board on Physics and Astronomy,Committee for a Decadal Survey of Astronomy and Astrophysics Pdf

Driven by discoveries, and enabled by leaps in technology and imagination, our understanding of the universe has changed dramatically during the course of the last few decades. The fields of astronomy and astrophysics are making new connections to physics, chemistry, biology, and computer science. Based on a broad and comprehensive survey of scientific opportunities, infrastructure, and organization in a national and international context, New Worlds, New Horizons in Astronomy and Astrophysics outlines a plan for ground- and space- based astronomy and astrophysics for the decade of the 2010's. Realizing these scientific opportunities is contingent upon maintaining and strengthening the foundations of the research enterprise including technological development, theory, computation and data handling, laboratory experiments, and human resources. New Worlds, New Horizons in Astronomy and Astrophysics proposes enhancing innovative but moderate-cost programs in space and on the ground that will enable the community to respond rapidly and flexibly to new scientific discoveries. The book recommends beginning construction on survey telescopes in space and on the ground to investigate the nature of dark energy, as well as the next generation of large ground-based giant optical telescopes and a new class of space-based gravitational observatory to observe the merging of distant black holes and precisely test theories of gravity. New Worlds, New Horizons in Astronomy and Astrophysics recommends a balanced and executable program that will support research surrounding the most profound questions about the cosmos. The discoveries ahead will facilitate the search for habitable planets, shed light on dark energy and dark matter, and aid our understanding of the history of the universe and how the earliest stars and galaxies formed. The book is a useful resource for agencies supporting the field of astronomy and astrophysics, the Congressional committees with jurisdiction over those agencies, the scientific community, and the public.