Study of the existence of extra-solar planets
Other Title(s)
دراسة وجود الكواكب خارج النظام الشمسي
Dissertant
Abd al-Hamid, Ahmad Abd al-Majid
Thesis advisor
University
University of Baghdad
Faculty
College of Science
Department
Astronomy and Space Department
University Country
Iraq
Degree
Master
Degree Date
2010
English Abstract
The method used in this work, for confirmation of the presence of Extra-solar planets, depends on information collected from available online data.
This method is concerning with calculating the metallicity of Extra-solar planets stars and relation with masses of these stars.
The masses of these stars found in the range: (0.89 ≤ MStar ≤ 1.23) solar mass.
This range of masses, leads to do further calculations concerning the metallicity ratio [Fe/H] which is a good tool in deciding, for choosing stars from catalogues as candidates in the purpose of observing new Extra-solar planets.
The result of this ratio showed range value of (-0.023 to 0.224) with an overall average equals (0.132 ± 0.1).
This is in agreement with that obtained by Schneider and equal (0.133 ± 0.11) for discovered stars accompanied with planets revolving around.
The technique used in this method is via data reduction of obtained spectra from available online database of observations for the stars sample.
The absorption lines for the hydrogen and iron were determined and have been used for the purpose of calculating stars intensities.
Intensities of these spectra were plotted as a function of wavelengths for each spectrum.
The absorption lines for hydrogen and iron were measured against stars intensities.
Eventually the metallicity equation has been applied to determine the [Fe/H] for each case.
Results for calculating the metallicity ratio were found in a good agreement with those found by Schneider [2010].
The metallicity ratio is a good criteria for planning observing new exoplanets by astronomers, which will save their efforts, instead of looking randomly to stars in the sky for this purpose.
Main Subjects
No. of Pages
139
Table of Contents
Table of contents.
Abstract.
Abstract in Arabic.
Chapter One : General introduction.
Chapter Two : Discovery methods.
Chapter Three : Data analysis, calculation and results.
Chapter Four : Discussion, conclusion and future work.
References.
American Psychological Association (APA)
Abd al-Hamid, Ahmad Abd al-Majid. (2010). Study of the existence of extra-solar planets. (Master's theses Theses and Dissertations Master). University of Baghdad, Iraq
https://search.emarefa.net/detail/BIM-603680
Modern Language Association (MLA)
Abd al-Hamid, Ahmad Abd al-Majid. Study of the existence of extra-solar planets. (Master's theses Theses and Dissertations Master). University of Baghdad. (2010).
https://search.emarefa.net/detail/BIM-603680
American Medical Association (AMA)
Abd al-Hamid, Ahmad Abd al-Majid. (2010). Study of the existence of extra-solar planets. (Master's theses Theses and Dissertations Master). University of Baghdad, Iraq
https://search.emarefa.net/detail/BIM-603680
Language
English
Data Type
Arab Theses
Record ID
BIM-603680
