Development of a Self-Consistent Gas Accretion Model for Simulating Gas Giant Formation in Protoplanetary Disks

The Atrium, University of Guelph Institutional Repository

Development of a Self-Consistent Gas Accretion Model for Simulating Gas Giant Formation in Protoplanetary Disks

Show simple item record

dc.contributor.advisor Thommes, Edward
dc.contributor.author Russell, John L.
dc.date 2011-12-05
dc.date.accessioned 2011-12-22T15:22:23Z
dc.date.available 2011-12-22T15:22:23Z
dc.date.issued 2011-12-22
dc.identifier.uri http://hdl.handle.net/10214/3212
dc.description en_US
dc.description.abstract The number of extrasolar planet discoveries has increased dramatically over the last 15 years. Nearly 700 exoplanets have currently been observed through a variety of observation techniques. Most of the currently documented exoplanets differ greatly from the planets in our own Solar System, with various combinations of eccentric orbits, short orbital periods, and masses many times that of Jupiter. More recently, planets belonging to a new class of `distant gas giants' have also been discovered with orbits of 30 to 100 times that of Jupiter. The wide variety of different planet formation outcomes stem from a complex interplay between gravitational interactions, hydrodynamic interactions and competitive accretion among the planets that is not yet fully understood. Simulations performed using a series of modifications to an existing, widely used hydrodynamic code (FARGO) are presented. The main goal is to develop a more rigorous and robust gas accretion scheme that is valid and consistent for the ranges of exolanetary gas giant masses, eccentricities and semimajor axes that have been observed to better understand the mechanisms involved in their formation. The resulting scheme is a more robust and accurate prescription for gas accretion onto planetary cores in a manner that is mostly resolution independent and valid over a large range of masses (less than an Earth mass to multiple Jupiter masses). The modified scheme accounts for multiple, competing, dynamic accretion mechanisms (including atmospheric effects) and their associated time scales between an arbitrary number of protoplanets. This updated accretion scheme provides a means for exploring the entire formation process of gas giants out of a variety of initial conditions in a self-consistent manner. The modifications made to the code as well as simulation results will be discussed and explored. en_US
dc.language.iso en en_US
dc.rights.uri http://creativecommons.org/licenses/by-nc-sa/2.5/ca/ *
dc.subject astrophysics en_US
dc.subject accretion disk en_US
dc.subject protoplanetary disk en_US
dc.subject planet formation en_US
dc.subject gas giant en_US
dc.subject exoplanet en_US
dc.subject accretion en_US
dc.subject planets en_US
dc.subject FARGO en_US
dc.title Development of a Self-Consistent Gas Accretion Model for Simulating Gas Giant Formation in Protoplanetary Disks en_US
dc.type Thesis en_US
dc.degree.programme Physics en_US
dc.degree.name Master of Science en_US
dc.degree.department Department of Physics en_US


Files in this item

Files Size Format View Description
thesis.pdf 4.163Mb PDF View/Open Thesis

This item appears in the following Collection(s)

Show simple item record

http://creativecommons.org/licenses/by-nc-sa/2.5/ca/ Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by-nc-sa/2.5/ca/

Search the Atrium


Advanced Search

Browse

My Account