Global ETD Search
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Showing 1 to 4 of 4 for “"debris disc"”.
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Secular Dynamics of Self-gravitating Debris Discs
Debris discs are the leftovers from the epoch of planetary formation, akin to the Solar System's asteroid and Kuiper belts. They preserve a record of the physical processes at work throughout the system's age, not least planet--disc interactions. Deciphering this record has become a central focus …
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High-resolution studies of exoplanetesimal belt formation and evolution
Stars are born with gas-rich protoplanetary discs that typically survive for a few Myr before dispersing, after which they are left with the planetary bodies that formed within the protoplanetary system: planets, and belts of planetesimals (km-sized rocky and icy bodies). Planetesimals within belts …
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The origin and evolution of warm exozodiacal dust
… of P-R drag and catastrophic collisions in a debris disc which predicts the levels of exozodiacal dust dragged into the habitable zone of a star from a cold outer belt. I show that detectable outer belts should produce exozodi levels tens of times higher than our zodiacal cloud via P-R drag, …
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EXOCOMETS AT LARGE ORBITAL RADII AND THEIR INWARD TRANSPORT IN DEBRIS DISCS
… down solids producing dust and giving rise to debris discs. Primitive asteroids and comets likely played a major role in the emergence of life on Earth through their delivery of volatiles early in the lifetime of our planet. Cometary impacts, therefore, could be a necessary condition for the …