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A search for planets and other variables in 47 Tucanae

Westra, E.A.M. (2003) A search for planets and other variables in 47 Tucanae. Master's Thesis / Essay, Astronomy.

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For this project stars of the globular cluster 47 Tucanae were observed. These observations were made using the 40 inch telescope at the Mount Stromlo Siding Springs Observatory, Australia, using the WFI detector. 806 images were taken using a special V+R filter. These images were processed using the Difference Image Analysis method (also known as image subtraction) [Wozniak 2000]. The orginal goal of this project was to find planets in this cluster, but no planetary transists were found in this project due to the used techniques. Future work on this data may find planets. The goal of this project has been adjusted to find the obvious variable stars. 13 variable stars are found: 6 RR Lyrae, 5 binary star systems and 2 long period variables. Of these 13 variables 2 RR Lyrae and 2 binary star systems are already known by Kaluzny et al [Kaluzny et al 1998].

Item Type: Thesis (Master's Thesis / Essay)
Degree programme: Astronomy
Thesis type: Master's Thesis / Essay
Language: English
Date Deposited: 15 Feb 2018 07:28
Last Modified: 15 Feb 2018 07:28

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