<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Mass Distributions of Galaxies from\r\nSAURON and CALIFA Stellar Kinematic Maps"^^ . "The amount and distribution of dark matter in galaxies defines the formation, evolution and\r\ndynamics of these systems. In this thesis we infer the internal mass distributions of 26 E–Sd\r\ngalaxies using SAURON and CALIFA two-dimensional stellar kinematic maps. We compare two\r\nmodeling approaches – fitting a solution of the axisymmetric Jeans equations and the commonly\r\napplied asymmetric drift correction (ADC). We show that ADC underestimates the enclosed\r\nmass by a factor of ∼3-4 once random motion (velocity dispersion) becomes significant com-\r\npared to ordered motion (streaming), that is, when the ratio of ordered-over-random motion is\r\nless than about 1.5. Such kinematics indicate that the stellar mass of the galaxy is not confined\r\nto the disk plane, as happens in bulges and thick disks of spiral galaxies, as well as in elliptical\r\ngalaxies. Since this is frequently realized in our sample, as well as in the general galaxy population, a full line-of-sight integration as provided by solutions of the axisymmetric Jeans equation\r\nis needed to reliably infer mass distributions in galaxies. We henceforth use the more realistic\r\nJeans models to estimate the dark matter fraction (fDM), by modeling the total (dynamical) mass-to-light ratio and comparing it with the value derived for stars (baryons) from stellar population models.\r\nWe find several trends of dark matter fraction with global galaxy properties. Ellipticals (E) and\r\nlate-type spiral (Scd–Sd) galaxies are the most dark matter-dominated objects, while lenticular\r\n(S0) and early-type spirals (Sa–Sb) have significantly smaller dark matter fractions. On average,\r\nfDM increases both at highest and lowest galaxy (stellar) masses, and is smaller at intermediate\r\nmasses. Further, it is also anticorrelated with the ratio of ordered-over-random motion, that is\r\ndispersion-dominated galaxies show a higher dark matter fraction. Finally, we investigate the\r\nmaximum circular velocities and qualitative shape of rotation curves as a function of galaxy\r\nmorphological type along the Hubble sequence. Peaked rotation curves are found in early-type\r\ngalaxies, while slowly rising rotation curves are typical for late-type spirals. This confirms predictions of recent simulations of galaxy evolution with local photoionization feedback. More\r\ngenerally, our results for dark matter content and dynamics provide empirical constraints on\r\ncurrent and future theoretical models of galaxy evolution across a wide range of galaxy morphological types and masses, and thereby will help us to understand the relevant physical processes."^^ . "2014" . . . . . . . "Veselina"^^ . "Kalinova Dimitrova"^^ . "Veselina Kalinova Dimitrova"^^ . . . . . . "Mass Distributions of Galaxies from\r\nSAURON and CALIFA Stellar Kinematic Maps (PDF)"^^ . . . "thesis_kalinova.pdf"^^ . . . "Mass Distributions of Galaxies from\r\nSAURON and CALIFA Stellar Kinematic Maps (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Mass Distributions of Galaxies from\r\nSAURON and CALIFA Stellar Kinematic Maps (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Mass Distributions of Galaxies from\r\nSAURON and CALIFA Stellar Kinematic Maps (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Mass Distributions of Galaxies from\r\nSAURON and CALIFA Stellar Kinematic Maps (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Mass Distributions of Galaxies from\r\nSAURON and CALIFA Stellar Kinematic Maps (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #16856 \n\nMass Distributions of Galaxies from \nSAURON and CALIFA Stellar Kinematic Maps\n\n" . "text/html" . . . "520 Astronomie"@de . "520 Astronomy and allied sciences"@en . .