W Ursae Majoris-type (W UMa-type) variable stars are contact eclipsing binary stars
whose evolution is unknown. Modelling to determine the physical parameters of as many
W UMa-type variable stars as possible might provide some insight as to how these contact
binaries form and evolve. The All Sky Automated Survey (ASAS) has discovered over
ve thousand of these systems. Using data from the ASAS and from the Wide Angle
Search for Planets (SuperWASP) project, models of selected ASAS contact binaries are
being created to determine their physical parameters. Some W UMa-type variable stars
are known to undergo changes in orbital period. For selected ASAS contact binaries, a
period analysis has been performed using SuperWASP data to determine if the systems
are undergoing changes in orbital period. Results of the modelling and period analyses of
selected systems are presented. / Thesis (M. Sc. (Astronomy))
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:unisa/oai:umkn-dsp01.int.unisa.ac.za:10500/3099 |
| Date | 08 1900 |
| Creators | Skelton, Patricia Leigh |
| Contributors | Smith, D.P. (Prof.) |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Dissertation |
| Format | 1 online resource (iv, 114 leaves) |
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