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dc.contributor.advisorKoda, Jinen_US
dc.contributor.authorWilhelm, Joernen_US
dc.contributor.otherDepartment of Physicsen_US
dc.date.accessioned2012-05-15T18:07:21Z
dc.date.available2012-05-15T18:07:21Z
dc.date.issued1-Aug-10en_US
dc.date.submittedAug-10en_US
dc.identifierWilhelm_grad.sunysb_0771M_10254.pdfen_US
dc.identifier.urihttp://hdl.handle.net/1951/55669
dc.description.abstractThis work investigates the growth of substructures in spiral galaxies using Smoothed Particle Hydrodynamics(SPH) simulations. The impact of varying spiral arm potentials, gas temperatures and numerical resolutions onto interarm features, observed as feathering, is studied and compared to predictions made by the K-H instability model by Wada and Koda(2004) and the clump shearing model by Dobbs and Bonnell(2006). They are also compared to a recent Archival HST survey of Spiral Galaxy Feathering. The interarm featuresseen in SPH and relative pressure SPH(rpSPH) simulations, are found to be overall similar to observed feathers. High temperatures decreases velocity shear in the spiral arm shock regions and interarm structures are smoothed out entirely. Higher spiral arm potential strength increases velocity shear and the amount of interarm structures. While higher resolution is found to increase their visibility, the intrinsic interarm structures seem hardly affected. The effect of gas temperature and spiral arm potential strength variations onto gaseous interarm structure is found to be consistent with both theoretical models. An increase of interarm structure at low resolution as anticipatedin the clump shearing model is not observed.en_US
dc.description.sponsorshipStony Brook University Libraries. SBU Graduate School in Department of Physics. Lawrence Martin (Dean of Graduate School).en_US
dc.formatElectronic Resourceen_US
dc.language.isoen_USen_US
dc.publisherThe Graduate School, Stony Brook University: Stony Brook, NY.en_US
dc.subject.lcshPhysics, Astronomy and Astrophysicsen_US
dc.subject.othergalaxies:spiral, interarm structureen_US
dc.titleSPH Simulations of Spiral Galaxy Interarm Structureen_US
dc.typeThesisen_US
dc.description.advisorAdvisor(s): Jin Koda. Committee Member(s): Michael A. Zingale; Harold J. Metcalf.en_US
dc.mimetypeApplication/PDFen_US


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