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 20 of 86 for “"Transits"”.
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Investigations of close-in exoplanets : starspot transits, and ultra-short period planets
Over the past 20 years, approximately 1700 planets outside of the solar system have been found. Known as exoplanets, they represent a great opportunity to answer some of the deepest questions about the origin and evolution of our solar system. In this thesis I focus on transiting exoplanets, …
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Effects of starspots activity on optical and near infrared observations of planetary transits
… is a source of noise in the study of the transits of extra-solar planets since it induces flux variations that significantly affect the transit depth determination and the derivations of planetary and stellar parameters. Surface brightness inhomogeneities, such as starspots or bright …
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An algorithmic exploration of exoplanetary transits and astrophysical variability with LSST and DES
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-05-01
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Phosphorus Cycling in the Ellison Park Wetland at the Mouth of Irondequoit Creek, Rochester, NY: A Case Study Evaluating the Movement of Phosphorus as it Transits a Coastal Wetland of Lake Ontario
The Ellison Park wetland complex lies at the head of Irondequoit Bay, a large embayment on the south shore of Lake Ontario near Rochester, NY. It receives water from the Irondequoit Creek watershed, which drains an area of 391 km2 of mixed land use. This is a mature, marsh wetland with some …
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Photometry and transit-timing analysis for eleven transiting exoplanets
This thesis presents time-series photometry of transits of 11 different extrasolar planets. Observations were conducted with the Fred L. Whipple Observatory 1.2m telescope and the Wise Observatory im telescope, in standard optical bandpasses. The number of transits observed for each planet ranges …
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Extrasolar planet transit photometry at Wallace Astrophysical Observatory
… an observing program for extrasolar planet transits at Wallace Astrophysical Observatory (WAO), which houses the 24-inch telescope used in this work. The purpose of this thesis is to enable students and faculty to easily perform transit photometry at WAO and assess the feasibility of transit …
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Transit timing with fast cameras on large telescopes
… for seven transiting exoplanets: OGLETR- 56b (11 transits), OGLE-TR-132b (7), OGLE-TR-111b (6), OGLE-TR-113b (6), CoRoT-2b (3), OGLE-TR-10b (3), and XO-2b (2). Ground-based observations of 38 transits were made using three new frame-transfer instruments: POETS and MagICe2v on the 6.5m Magellan …
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Regions Security Policy (RSP) : applying regions to network security
… data as it enters into, exits from, and transits within a region. In doing so, it brings together several existing security solutions so as to provide security comparable to existing systems that is more likely to function correctly.
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Theoretical detection limits and error reduction for radial velocity observations of an Earth-like exoplanet
… when using the knowledge of the period from transits to choose clustered observation times near the peaks of the curve, the error in the mass was reduced by about 20% for the same number of total observations, and was thus approximated by the power law [sigma]%error = 1030N-⁰.⁵. This …
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Measuring transit timing variations of exoplanets using small telescopes
Transits of exoplanets were observed from June 2009 through January 2010. Six transit light curves are presented in this paper for three planets: WASP-10b, WASP- 11/HAT-P-10b, and TrES-3. Measurements of the planetary radii, semi-major axis, transit duration, and period confirmed literature values …
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Feasibility-study for space-based transit photometry using mid-sized nanosatellites
… planets around dimmer stars, and discover more transits in RV followup missions.
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Maps and masses of transiting exoplanets : towards new insights into atmospheric and interior properties of planets
… caveats' effects via global analyses including transits, phase curves, and radial velocity measurements. I use this method to create the first two-dimensional map and the first cloud map of an exoplanet for the hot-Jupiters HD 189733b and Kepler-7b, respectively. The second method, MassSpec, …
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Análisis de lo fantástico y las transiciones femeninas en el cine de Roman Polanski: "Repulsión" (1965) y "El bebé de Rosemary" (1968)
… on the study between the "fantastic" and the transits of the feminine imaginary in the cinema of the director Roman Polanski, taking as objects of analysis the films Repulsion (1965), and Rosemary's Baby (1968). In both, the development of fantastic fiction highlights the experiences of the …
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Discovery and Characterisation of Long-Period Exoplanets with TESS and CHEOPS
… number of long-period planets, I use TESS ‘duotransits’ — planet candidates with two observed transits separated by a large gap, typically two years. From the two non-consecutive transits the orbital period is unknown, but there exists a discrete set of allowed period aliases. With the …
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The composition of concert music within the Digital Audio Workstation environment.
… ensemble; Rapprochement for microtonal ensemble; Transits for bass flute, eight voices and electronics; Shutterspeed for clarinet and soundtrack; and Fossils for piano and live electronics. For each of the works, a distinct DAW-based concept and compositional approach has been developed and …
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Transit timing variations of the exoplanet K2-25b
… of a perturbing planet. Observations of K2-25b transits were taken using 14-inch and 24-inch telescopes at Wallace Astrophysical Observatory. Two transit light curves were fit using an MCMC implementation to find the orbital period, planetary radius, and semi-major axis. A new period calculation …
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ExoSpotter: Few Shot Relevance Feedback For Learning High Recall Exoplanet Search
… labeled synthetic light curves with and without transits by combining a simple physics-based transit injection model with a statistics-based generative model seeded with abundant non-transiting (“noise”) light curve data. After comparing multiple methods, we selected and trained a generic XGBoost …
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An analysis of noise in the CoRoT data
… using MATLAB. CoRoT attempts to observe the transits of these planets across their parent stars. CoRoT occupies an orbit which periodically carries it through the Van Allen Belts, resulting in a very high level of high outliers in the flux data. Known systematics and outliers were removed …
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A demonstration and analysis of requirements for maritime navigation planning
Restricted water transits by U. S. Navy ships require detailed planning by Commanding Officers, Navigators and the entire ship control watch team. The methodical maritime navigation planning process currently used has not changed appreciably since World War Two. The process remains a manual one, …
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Bulk Growth of Semiconductor Crystals in a Magnetic Field: A Study of Dopant Transport
… is used to track each fluid particle during its transits across the core between diffusion layers. The dopant distribution in each layer depends on the concentrations of all fluid particles which are entering this layer. The dopant distribution is very non-uniform throughout the melt and is far …
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