Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"contact binary"”.
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Computational starspot photometry of contact binary stars
Starspots are not well understood for contact binary star systems. The following properties of spots were systematically investigated: temperature, radius, colatitude, and longitude. Spots were modeled on an AE Phe like contact binary system. The spots were changed in a systematic manner. The light …
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Orbit control for a spacecraft around a splitting contact binary asteroid
… orbit control problem for a spacecraft around a contact binary asteroid considering the dynamics of both the spacecraft and the asteroid itself. It is known that approximately 15\% of the near-Earth asteroids are binary, and among these the fraction of contact binaries is between 6 and 10%. Most …
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Spacecraft trajectory tracking and parameter estimation in the presence of a splitting contact binary asteroid
… the asteroid’s structure or, in the case of contact binary asteroids, cause the asteroid to split. Conditions on the evolution of the contact binary system after splitting are derived. Observability issues causing inconclusive results in the previous work were addressed here by identifying an …
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The behavior of O - C curves for contact binaries in the Kepler catalog
… this thesis, we study the timing of eclipses for contact binary systems in the Kepler catalog. Observed eclipse times were determined from Kepler long-cadence light curves and "observed minus calculated" (0 - C) curves were generated for both primary and secondary eclipses of the contact binary …
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Eclipsing Binaries and Period Changes in the SuperWASP Archive
… in a range of areas. A sample of 143 eclipsing binary candidates were found with periods close to the short-period limit of the period distribution for main sequence binaries, which shed light on the likely cause of the limit. Significant period increases and decreases were detected in many of …
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A Photometric Study of the Eclipsing Binary V574 Lyrae
… insight into stellar evolution and eclipsing binary variables are particularly excellent laboratories for determining stellar physical parameters and behavior. These parameters, when taken with those of other stars, can be used to evaluate current theories on stellar evolution and stellar …
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The origin and evolution of Transneptunian binaries
… orbit of Neptune. A large fraction are found in binary pairs, up to ~30% in the Cold Classical population, which generally have components of similar size and colour on widely separated orbits. Understanding what mechanisms have lead to the formation of such a high binary fraction, and their …