Photometric analysis of RS CVn eclipsing binary stars
Other Title(s)
تحليل ضوئي لنجوم ثنائية كسوفيه من مجموعة ثنائيات كلاب الصيد (رس)
Dissertant
Thesis advisor
Comitee Members
Zaki, Wafa Hasan Ali
Karam, Nihad Ali
Khalaf, Salman Zaydan
University
University of Baghdad
Faculty
College of Science
Department
Astronomy and Space Department
University Country
Iraq
Degree
Master
Degree Date
2013
English Abstract
Our study focuses on eclipsing binary system.
The variations in light intensity from eclipsing binary stars are caused when a star passes in front of the other relative to an observer.
If we assume that the stars are spherical and that they have circular orbits, then we can easily calculate how the light varies as a function of time, which is called a light curve, for eclipsing binary stars.
The discovery and detection of eclipsing binary systems comes from measuring the variation of the intensity of light through photometry.
The observed light intensity varies as the stars move through their orbits.
The light curves clearly show the effects of movement of the components of the system.
In this work, two computer modeling packages are used to study and analyses some of the short period group of the eclipsing RS Canum Venaticorum (RS CVn).
The first model is PHOEBE, which stands for PHysics Of Eclipsing BinariEs (PHOEBE), and the second is Binary Maker 3(BM3).
These packages are tools for the modeling of eclipsing binary stars based on photometric data.
PHOEBE is modeling software for eclipsing binaries which uses the Wilson- Devinney method.
The Wilson-Devinney code, WD method, computes a synthetic model of an eclipsing binary which is based on the Roche model.
The light curves of four selected eclipsing binaries of the short period group RS CVn which are, CG Cyg, CV Boo, RT And and BH Vir were Create PDF files without this message by purchasing novaPDF printer (http://www.novapdf.com) analyzed using PHOEBE and BM3 models.
The physical and geometrical elements were determined such as mass, radii, surface potential.
The results have been compared with the results of other researchers.
The synthetic light curves for these systems were generated using PHOEBE and BM3 models for two cases (unspotted and spotted models) and the physical parameters were determined for each system.
Main Subjects
No. of Pages
131
Table of Contents
Table of contents.
Abstract.
Abstract in Arabic.
Chapter One : General introduction.
Chapter Two : Theoretical concepts.
Chapter Three : Light curves modeling and results.
Chapter Four : Conclusions and suggestions.
References.
American Psychological Association (APA)
Ahmad, Ayman Muwaffaq. (2013). Photometric analysis of RS CVn eclipsing binary stars. (Master's theses Theses and Dissertations Master). University of Baghdad, Iraq
https://search.emarefa.net/detail/BIM-604206
Modern Language Association (MLA)
Ahmad, Ayman Muwaffaq. Photometric analysis of RS CVn eclipsing binary stars. (Master's theses Theses and Dissertations Master). University of Baghdad. (2013).
https://search.emarefa.net/detail/BIM-604206
American Medical Association (AMA)
Ahmad, Ayman Muwaffaq. (2013). Photometric analysis of RS CVn eclipsing binary stars. (Master's theses Theses and Dissertations Master). University of Baghdad, Iraq
https://search.emarefa.net/detail/BIM-604206
Language
English
Data Type
Arab Theses
Record ID
BIM-604206
