Global ETD Search

111	High resolution spectroscopy of old stars and young disks Bitner, Martin Allan, January 1900 (has links) Thesis (Ph. D.)--University of Texas at Austin, 2008. / Vita. Includes bibliographical references.
112	Simulations of giant planet migration in gaseous circumstellar disks / Lufkin, Graeme, January 2004 (has links) Thesis (Ph. D.)--University of Washington, 2004. / Vita. Includes bibliographical references (p. 115-124).
113	Software for efficient file elimination in computer forensics investigations Davis, Chad Werner. January 1900 (has links) Thesis (M.S.)--West Virginia University, 2004. / Title from document title page. Document formatted into pages; contains x, 134 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 97-99).
114	Microstructural characterization and heat treatment of A-286 turbine buckets Bradley, Christopher Michael, January 2009 (has links) Thesis (M.S.)--University of Texas at El Paso, 2009. / Title from title screen. Vita. CD-ROM. Includes bibliographical references. Also available online.
115	Edge-on disk galaxies a structure analysis in the optical and near-infrared / De Grijs, Richard. January 1997 (has links) Thesis (doctoral)--Rijksuniversiteit Groningen, 1997. / Includes bibliographical references.
116	Late-stage accretion and habitability of terrestrial planets / Raymond, Sean Neylon, January 2005 (has links) Thesis (Ph. D.)--University of Washington, 2005. / Vita. Includes bibliographical references (p. 166-174).
117	Self-gravitating eccentric disk models for the double nucleus of M31 Salow, Robert M. January 2004 (has links) Thesis (Ph.D.)--Ohio University, March, 2004. / Title from PDF t.p. Includes bibliographical references (p. 95-101)
118	Optimization of a new preform die design for forging a rotating part using computer modeling and analysis / Al-Mufadi, Fahad. January 2004 (has links) Thesis (Ph.D.)--Ohio University, June, 2004. / Includes bibliographical references (leaves 150-158)
119	Development of microslip friction models and forced response prediction methods for frictionally constrained turbine blades Cigeroglu, Ender. January 2007 (has links) Thesis (Ph. D.)--Ohio State University, 2007. / Full text release at OhioLINK's ETD Center delayed at author's request
120	Formation of freely floating sub-stellar objects via close encounters Vorobyov, Eduard I., Steinrueck, Maria E., Elbakyan, Vardan, Guedel, Manuel 13 December 2017 (has links) Aims. We numerically studied close encounters between a young stellar system hosting a massive, gravitationally fragmenting disk and an intruder diskless star with the aim of determining the evolution of fragments that have formed in the disk prior to the encounter. Methods. Numerical hydrodynamics simulations in the non-inertial frame of reference of the host star were employed to simulate the prograde and retrograde co-planar encounters. The initial configuration of the target system (star plus disk) was obtained via a separate numerical simulation featuring the gravitational collapse of a solar-mass pre-stellar core. Results. We found that close encounters can lead to the ejection of fragments that have formed in the disk of the target prior to collision. In particular, prograde encounters are more efficient in ejecting the fragments than the retrograde encounters. The masses of ejected fragments are in the brown-dwarf mass regime. They also carry away an appreciable amount of gas in their gravitational radius of influence, implying that these objects may possess extended disks or envelopes, as also previously suggested. Close encounters can also lead to the ejection of entire spiral arms, followed by fragmentation and formation of freely-floating objects straddling the planetary mass limit. However, numerical simulations with a higher resolution are needed to confirm this finding. protoplanetary disks stars: formation stars: protostars brown dwarfs hydrodynamics

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