Global ETD Search
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Showing 1 to 4 of 4 for “"Planetary Composition"”.
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Subsurface Planetary Investigation Techniques and Their Role for Assessing Subsurface Planetary Composition
<p>Subsurface planetary investigation techniques are of high interest and importance for the scientific community. Not only they can enhance our knowledge of the history of planetary formation but also can lead to information about its future. Whether the investigation is being conducted remotely …
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Enshrouded Exoplanetary Systems
… low apparent stellar activity values caused by planetary mass-loss enshrouding the system. The resulting circumstellar absorption depresses the cores of the Ca II H&K lines, where the activity index log(R'<sub>HK</sub>) is measured. I searched for this effect in a sample of ∼2700 stars, …
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Exogeology as Revealed by Polluted White Dwarfs
… twin, and possibly alien life, understanding the composition and fate of these worlds is of paramount importance. Nature provides an unlikely source of information in the form of dead stars called white dwarfs. Many white dwarfs have accreted remnants of their own planetary systems, causing their …
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Polluted White Dwarfs: Insights into Ancient Extrasolar Planetary Systems
… processes which determine a rocky world’s bulk composition, geodynamics, and subsequent climate is of vital importance to this pursuit. In this thesis, I demonstrate how the pollution of white dwarf stars by rocky exoplanetary material offers an insight into the bulk composition of rocky …