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 10 of 10 for “"Exoplanetary Atmospheres"”.
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Chemical Characterisations of Exoplanetary Atmospheres
We examine the properties of exoplanetary atmospheres using state-of-the-art retrieval methods and theoretical models. The examinations include investigations of the chemical compositions and abundances, the cloud and haze properties, and the temperature structures of exoplanetary atmospheres. The …
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Revealing the Nature of Exoplanetary Atmospheres
… detections of multiple chemical species in exoplanetary atmospheres. However, measuring the abundances of these molecules and atoms, as required to infer exoplanet formation mechanisms, has been challenged by the prospect of atmospheric clouds. In this thesis, I introduce a new approach to …
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Observations, Thermochemical Calculations, and Modeling of Exoplanetary Atmospheres
… thermochemical calculations, and modeling their atmospheres. We used Spitzer multi-wavelength secondary-eclipse observations to characterize planetary atmospheres. We chose targets with high signal-to-noise ratios, as their deep eclipses allow us to detect signatures of spectral features and …
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Investigating the Characteristics of Exoplanetary Atmospheres and Interiors
… models of a number of sub-Neptunes whose atmospheres are set to be observed using JWST. Before such observations take place, it is vitally important to understand the interior structures of these planets, which strongly affects their possible atmospheric compositions. We use the bulk …
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Molecular Characterisation of Exoplanetary Atmospheres using High-Resolution Transmission Spectroscopy
Exoplanetary science has entered an exciting new age of studying lower-mass exoplanets, with atmospheric characterization emerging as the frontier of this revolution. Whilst JWST has dominated the spotlight in recent years, high-resolution spectrographs on large ground-based telescopes are powerful …
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Studying the atmosphere of HD 189733 b using the Rossiter-McLaughlin effect
… is a widely-used method for studying exoplanetary atmospheres. However, the differential data analysis techniques that are generally applied to high-resolution ground-based spectroscopic data are only sensitive to narrow spectral features and do not preserve broadband features. This …
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New Avenues in Atmospheric Modelling of Exoplanets
… the development of new self-consistent models of exoplanetary atmospheres, a new paradigm for atmospheric retrievals of thermal emission spectra, as well as chemical detections using both high-resolution Doppler spectroscopy as well as low-resolution transit spectroscopy. I firstly computed the …
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The creation and use of a chemical kinetics code to model and understand the atmospheres of hot Jupiters
… spectroscopy provides a direct avenue to probe exoplanetary compositions. However, whether obtained in transit or thermal emission, spectroscopic observations probe limited pressure windows of planetary atmospheres and are directly sensitive to only a limited set of spectroscopically active …
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Retrieval of atmospheric properties of extrasolar planets
… features of temperature structures in planetary atmospheres (including temperature inversions), and reproduces a wide range of published P-T profiles, including those of solar system planets. We apply our temperature and abundance retrieval method to two exoplanets which have the best data …
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New Advances in Exoplanet Spectroscopy from Space and Ground
… atmospheric characterisation of exoplanet atmospheres at high precision, with a particular focus on small, temperate worlds. We aim to establish best practices for both ground- and space-based instruments through detailed instrument characterisation and the development of robust data …