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 “"super-Earths"”.
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Mantle thermal evolution of tidally-locked super-earths
Most super-Earth (mass < 10M[mathematical symbol]) detection techniques are biased towards massive planets with close-in orbits. A planet's orbital decay timescale decreases with a lower semi-major axis, thereby providing a high probability of detecting exoplanets which are in tidal-lock with their …
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Internal and atmospheric structures of heated watery super-Earths
Astronomers are discovering more and more super-Earths, planets around other stars whose sizes and masses lie somewhere between those of Earth and Neptune. We would like constraints on their composition to investigate whether they are more similar to rocky Earth or gaseous Neptune. To do this we …
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Magnetic interaction of super-Earths with their host star and planet composition
… field and the planet-star interactions of super Earths, extrasolar planets with masses between 1 and 10 times the mass of the Earth. We first present a model of the magnetic field of a super Earth, the dynamo model. We then list and explain several mechanisms through which magnetic energy …
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Bayesian atmospheric retrieval for exoplanets : uniqueness of exoplanet spectra, characterizations of super-earths, and evaluations of dedicated space telescope designs
… For the newly discovered class of low-density super-Earths, with radii and masses intermediate between Earth and Neptune, I present an observational approach to distinguish whether these planets more closely resemble the giant planets in our solar system or whether they represent a completely …
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Detection and Characterization of Hot Super-Earth Exoplanets
Hot super-Earths are exoplanets characterized by short orbital periods and surface temperatures high enough to melt silicate rock. These planets lack any solar system analog, and are the most accessible small, rocky exoplanets available to study today. In this thesis, I develop a holistic …
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The formation and evolution of planetary systems
… our own. In particular, the preponderance of super-Earths and mini-Neptunes (planets with radii smaller than Neptune's but larger than Earth's) at short orbital radii has challenged planet formation theories developed in the context of our own Solar System. How and where these planets form …
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The properties of transiting exoplanets
… plane. This led to my discovery of three super-Earths and one planet candidate orbiting the M1 dwarf K2-133. I later conducted a follow-up study on the K2-133 system, where I further constrained the stellar and planetary properties using the Gaia DR2 parallax distance, and WHT/LIRIS NIR …
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Molecular Characterisation of Exoplanetary Atmospheres using High-Resolution Transmission Spectroscopy
… developed thus far to study a temperate Super-Earth. We here demonstrate the feasibility of atmospheric characterisation for Super-Earths with R ≤ 1.6 R⊕ using ground-based facilities, by confirming the presence of H2S (3.9σ) in the atmosphere of the temperate Super-Earth planet L 98-59 d …
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Investigating the Characteristics of Exoplanetary Atmospheres and Interiors
… I conduct an assessment of the feasibility of supervised machine learning as a tool to carry out atmospheric retrievals of exoplanets. Retrieval methods commonly conduct Bayesian parameter estimation and statistical inference using sampling algorithms such as Markov Chain Monte Carlo or Nested …
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Towards Generalized Characterization of Exoplanet Atmospheres with Transit Spectroscopy
The field of exoplanetary sciences has grown from an era of detection to one of characterization. To date, over 4000 exoplanets have been discovered and over 50 of them have been observed with primary transit spectroscopy methods. The current population of characterized exoplanets spans a wide …