Essays about: "pebble accretion"
Showing result 1 - 5 of 8 essays containing the words pebble accretion.
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1. Forming wide-orbit planets via pebble accretion
University essay from Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionenAbstract : The possibility that detected substructures in protoplanetary disks, such as gaps, rings and cavities, are created by distant protoplanets has prompted an inquiry into the mechanism responsible for their formation. These wide-orbit young bodies are likely to form relatively rapidly in the outer regions of circumstellar disks. READ MORE
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2. How did Jupiter form?
University essay from Lunds universitet/Astronomi - Genomgår omorganisationAbstract : Two relatively new concepts in planetary science are planetary migration; wherein the planets migrate through the protoplanetary disk as they form, and pebble accretion; wherein the planetesimals which become terrestrial planets and giant planet cores grow through the accretion of small pebbles. Planetary migration has become a generally accepted concept but there is still much to be learned even about how it affected the formation of our own solar system. READ MORE
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3. The fate of pebbles and planetesimals entering protoplanetary envelopes
University essay from Lunds universitet/Astronomi - Genomgår omorganisationAbstract : Planetary embryos grow by the accretion of solid dust-material, ranging from cm- to m-sized pebbles up to km-sized planetesimals. However, the underlying size-distribution of the accreted material is poorly understood. READ MORE
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4. Formation and Evolution of Protoplanetary Disks
University essay from Lunds universitet/Astronomi - Genomgår omorganisationAbstract : A star forms with a surrounding protoplanetary disk after the collapse of a molecular cloud core. Subsequently, over a period of several Myr this protoplanetary disk of dust and gas is accreted onto the host star. We model the formation and evolution of such a protoplanetary disk using a one-dimensional numerical model. READ MORE
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5. Can planet formation explain the observed differences in the chemical composition of binary stars?
University essay from Lunds universitet/Astronomi - Genomgår omorganisationAbstract : A suggested explanation for the observed differences in chemical abundances in binary stars has been planet formation (e.g. Tucci Maia et al. 2014). READ MORE