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Parameter determination of a binary star system

Title: Parameter determination of a binary star system

Diploma Thesis , 2001 , 71 Pages , Grade: 1,0

Autor:in: DI Mag Fabian Prilasnig (Author)

Astronomy
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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.

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Title
Parameter determination of a binary star system
College
Technical University of Graz
Grade
1,0
Author
DI Mag Fabian Prilasnig (Author)
Publication Year
2001
Pages
71
Catalog Number
V86207
ISBN (eBook)
9783638020589
ISBN (Book)
9783638921480
Language
English
Tags
Double star Parameter Determination
Product Safety
GRIN Publishing GmbH
Quote paper
DI Mag Fabian Prilasnig (Author), 2001, Parameter determination of a binary star system, Munich, GRIN Verlag, https://www.grin.com/document/86207
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