Essays about: "gas migration"

Showing result 6 - 10 of 22 essays containing the words gas migration.

  1. 6. Mean Motion Resonances and Planetary Scattering

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Author : Erik Dahlöf; [2018]
    Keywords : mean motion resonance; orbit resonance; planetary dynamics; planet-planet scattering; planetary scattering; eccentricity; inclination; planet systems; disturbing force; orbit dynamics; orbital elements; planets; exoplanets; scattering phase; relaxation; dynamical instabilities; N-body; protoplanetary disk; planet migration; eccentricity damping; inclination damping; planet-disk interactions; Physics and Astronomy;

    Abstract : The observed distribution of giant exoplanet eccentricities and inclinations are significantly larger than what is measured for their Solar system analogues, Jupiter and Saturn. Since the first observations of exoplanets, planet-planet scattering has been proposed as a possible mechanism for exciting the eccentricities and inclinations of giant exoplanets. READ MORE

  3. 7. Planet migration in evolving protoplanetary discs

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Author : Linn Eriksson; [2018]
    Keywords : Planets and satellites: formation; Protoplanetary discs: evolution; Planet-disc interactions; Physics and Astronomy;

    Abstract : The rate of migration and accretion onto protoplanets is greatly influenced by the structure of the surrounding protoplanetary disc. This structure changes with time as the disc evolves on a million year timescale, implying that the process of planet formation might look very different depending on when it was initiated. READ MORE

  4. 8. Acoustic survey of sea floor features in Asköfjärden

    University essay from Stockholms universitet/Institutionen för geologiska vetenskaper

    Author : Kim Lundmark; [2017]
    Keywords : Marine Geology; Marine Geophysics; Multibeam; Sub-bottom Profiler; Stockholm Archipelago; Geomorphology; Baltic Sea; Gas Seeps; Methane Gas; Fluid Migration; Groundwater; Acoustic Units; Sediment Profile;

    Abstract : Marine geological surveys in Asköfjärden in the southern Stockholm Archipelago hasrevealed step like features in the sediments on the Baltic sea floor. The aim of this project is toanalyse the steps and possible formation processes from the survey data. READ MORE

  5. 9. Giant planet formation around HR8799

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Author : Dan Wallsby; [2017]
    Keywords : HR8799; Planet formation; Protoplanetary disks; Giant planets; Astronomy; Migration; Dynamics; Physics and Astronomy;

    Abstract : In the thriving field of exoplanet research new discoveries are made all the time, and while most of the observed systems can be explained with classical planet formation models - some are much harder to explain. When stars form they are often surrounded by the remaining material of the nebulae they formed from. READ MORE

  6. 10. Radial migration of stars, measured in N-body simulations

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Author : Daniel Mikkola; [2017]
    Keywords : N-body; simulations; galaxies; radial migration; stars; Physics and Astronomy;

    Abstract : The purpose of Galactic archaeology is determining the history of the Milky Way (MW) Galaxy. To do this one uses observational data from stellar populations in terms of properties such as kinematics, chemistry, ages, and evolution. READ MORE