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 12 of 12 for “"Tidal Interactions"”.
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Tidal interactions between planets and stars
… close proximity to their parent stars, strong tidal interactions between the two bodies are expected to cause significant secular spin-orbit evolution. This thesis tackles two problems regarding the tidal evolution of short-period extrasolar planets. In the first part, we adopt a simple model of …
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The Effect of Tidal Interactions On Hot Subdwarf B Stars and Their Pulsations
… He-burning stars. The sdBs are formed by binary interactions on the red giant branch (RGB) which cause the stars to lose most of their H envelopes. Over half of all observed hot subdwarf B stars are found in binaries, many of which are found in close configurations with orbital periods of $10\,$d …
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Detectability of dynamical tidal effects and the detection of gravitational-wave transients with LIGO
Dynamical tidal effects impact the orbital motion of extended bodies, imprinting themselves in several measurable ways. This thesis explores the saturation of weakly nonlinear dynamical tidal interactions within two very different systems: hot Jupiters orbiting main-sequence hosts with radiative …
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Quantitative analysis of 3-arm spiral galaxies
… to decaying into even numbered patterns due to tidal interactions. We present a series of quantitative analyses on a large sample of 3-arm spiral galaxies selected by the Galaxy Zoo 2 group. Much of this analysis used the image processing interface known as the Spiral Arc Finder and Reporter …
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Tidally Driven Oscillations in KIC 4544587: a δ Scuti Binary System
… characteristics, individual components and tidal interactions. The system contains an early A-type δ Scuti variable, which pulsates in both pressure and gravity modes, and a late F- to early G-type star, which is possibly a solar-like oscillator. The Wilson-Devinney code was used to model …
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Extracting information from the exteriors of dark matter halos
… of observing matter that has been stripped by tidal interactions as galaxies enter clusters. We find that we can indeed detect tidal tails when using full 3D data but cannot do so when we only have access to projected data. Finally, we study the impact that future accretion has on galaxy-sized …
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Observing galaxies in the Southern Filament of the Virgo Cluster with KAT-7 and WSRT
… and with their environment, and very often these interactions leave fingerprints in the HI distribution. The extended HI envelopes of galaxies are sensitive tracers of those tidal interactions. In the present study, we map the HI distribution of galaxies in a ~1.5° X 2.5° region of the Virgo …
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Modeling the Effects of Sea-Level Rise on Flooding in the Lower Ozama River Basin, Santo Domingo, Dominican Republic
… the impacts of SLR and compound fluvial and tidal interactions on flooding in the lower Ozama River Basin, Santo Domingo. A one-dimensional (1D) HEC-RAS model was reconstructed from Belliard (2020) with newly incorporated bathymetric data, while a two-dimensional (2D) unsteady flow HEC-RAS …
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Heartbeat Stars and the Ringing of Tidal Pulsations
… ellipsoidal variables that undergo strong tidal interactions at periastron, when the stars are close to each other. These interactions induce the deformation of the stars, which causes a change in the cross-sectional area and temperature variations over the stellar surface. In the precise …
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Characterization of exoplanetary systems combining transit timing techniques and radial velocities: From secular perturbations to resonant chains
… techniques allow to probe the gravitational and tidal interactions that shape planetary architectures and govern their long-term evolution. In this context, this thesis focuses on investigating the dynamical architecture and evolution of exoplanetary systems through complementary observational …
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Resolved stellar populations: watching galaxy evolution in real time
… of a dwarf galaxy orbiting the Milky Way and tidal interactions partially disrupted it. With observations from the Infra-Red Array Camera aboard of the Spitzer telescope, investigations on red giant stars in ω Centauri are carried out to identify infrared colour excess originating from the …
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A Westerbork blind HI imaging survey of the Perseus-Pisces filament in the Zone of Avoidance
… bound groups, due to the higher incidence of tidal interactions between the galaxies. Furthermore, an indication of HI-gas deficiency is found in the core of the 3C129 cluster. We assess the cause of this deficiency through models of the ICM of the 3C129 cluster and find ram-pressure stripping …