Eclipsing Binary Stars NP Andromedae and V1120 Ophiuchi PDF Download
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Author: Kellie Aileen Fletcher
Publisher:
ISBN:
Category : Astronomical photometry
Languages : en
Pages : 152
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Book Description
Analysis was performed on observations of the binary star systems NP Andromedae and V1120 Ophiuchi. The raw CCD images were calibrated and aperture photometry was performed to obtain the light curves for both systems. The period was calculated for NP And using the Period04 program, and the period was calculated for V1120 Oph by using an O - C period study. The spectral type and temperature were determined by color indices for both star systems. The Wilson-Devinney method was used to obtain geometric and astrophysical parameters for NP And, and a 3-D model was constructed of the NP And star system using Binary Maker. The light curves confirmed that both star systems were in fact W UMa star systems. NP And was determined to be an A-type W UMa system with a cool spot on the primary star. There was not enough data to do a complete photometric analysis of V1120 Oph.
Author: Kellie Aileen Fletcher
Publisher:
ISBN:
Category : Astronomical photometry
Languages : en
Pages : 152
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Book Description
Analysis was performed on observations of the binary star systems NP Andromedae and V1120 Ophiuchi. The raw CCD images were calibrated and aperture photometry was performed to obtain the light curves for both systems. The period was calculated for NP And using the Period04 program, and the period was calculated for V1120 Oph by using an O - C period study. The spectral type and temperature were determined by color indices for both star systems. The Wilson-Devinney method was used to obtain geometric and astrophysical parameters for NP And, and a 3-D model was constructed of the NP And star system using Binary Maker. The light curves confirmed that both star systems were in fact W UMa star systems. NP And was determined to be an A-type W UMa system with a cool spot on the primary star. There was not enough data to do a complete photometric analysis of V1120 Oph.
Author: Carl S. Brown
Publisher:
ISBN:
Category : Astronomical photometry
Languages : en
Pages : 676
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Book Description
Author: Cathy Sue Mansperger
Publisher:
ISBN:
Category :
Languages : en
Pages : 68
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Book Description
Author: Harlow Shapley
Publisher:
ISBN:
Category : Double stars
Languages : en
Pages : 26
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Book Description
Author: Stephen Joseph Schiller
Publisher:
ISBN:
Category : Astronomical spectroscopy
Languages : en
Pages : 502
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Author: Alex Vincent
Publisher:
ISBN: 9781989753132
Category : Astronomy
Languages : en
Pages :
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Author: Andrej Prsa
Publisher:
ISBN: 9780750312882
Category : Science
Languages : en
Pages : 200
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Book Description
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.
Author:
Publisher:
ISBN: 9781475731309
Category : Eclipsing binaries
Languages : en
Pages : 355
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Book Description
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.
Author: Andrej Prša
Publisher:
ISBN: 9780750312875
Category : Eclipsing binaries
Languages : en
Pages : 0
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Book Description
"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.
Author: Jerzy Marek Kreiner
Publisher:
ISBN: 9788372710857
Category :
Languages : en
Pages : 377
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Book Description
