Essays about: "disk structure"

Showing result 1 - 5 of 31 essays containing the words disk structure.

  1. 1. The quest for a classical bulge - a study of kinematics, abundances, and ages using microlensed dwarf stars and Gaia

    University essay from Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionen

    Author : Calum Kvernes Macpherson; [2023]
    Keywords : Bulge; Milky Way; Kinematics; Galpy; Dwarf Stars; Physics and Astronomy;

    Abstract : Context: We present an kinematical analysis of 90 F and G type dwarf, turn-off, and subgiant stars in the Galactic bulge. These stars were observed with high-resolution spectrographs during gravitational microlensing events This allowed for their ages, abundances, and radial velocities to be ascertained while they were significantly brighter. READ MORE

  3. 2. The tangled Warp of the Milky Way

    University essay from Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionen

    Author : Viktor Hrannar Jónsson; [2023]
    Keywords : Galaxy: structure; Galaxy: kinematics and dynamics; Galaxy: disk; Galaxy: evolution; Physics and Astronomy;

    Abstract : Context: The Milky Way disc, like the discs of many other spiral galaxies, has been shown to be warped. The growing astrometric data set for stars produced by the Gaia mission allows for more detailed studies of the stellar disc's warp. READ MORE

  4. 3. Application of Physics-Informed Neural Networks for Galaxy Dynamics

    University essay from Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Author : Lucas Barbier; [2023]
    Keywords : ;

    Abstract : Developing efficient and accurate numerical methods to simulate dynamics of physical systems has been an everlasting challenge in computational physics. Physics-Informed Neural Networks (PINNs) are neural networks that encode laws of physics into their structure. READ MORE

  5. 4. Parallel Query Systems : Demand-Driven Incremental Compilers

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Christofer Nolander; [2023]
    Keywords : Query Systems; Parallelism; Incremental Computation; Compiler Architecture; Dependency Tracking; Query system; Parallelism; inkrementella beräkningar; kompilatorer; beroende spårning;

    Abstract : Query systems were recently introduced as an architecture for constructing compilers, and have shown to enable fast and efficient incremental compilation, where results from previous builds is reused to accelerate future builds. With this architecture, a compiler is composed of several queries, each of which extracts a small piece of information about the source program. READ MORE

  6. 5. Origin of blue straggler stars in the Milky Way halo

    University essay from Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionen

    Author : Adam Brcek; [2023]
    Keywords : Blue Straggler; Galactic Halo; Spectroscopic Surveys; Binary Star Evolution; Mass Transfer; Physics and Astronomy;

    Abstract : Blue straggler stars (BSSs) are exotic stellar objects that appear to be younger than the age of the population they come from suggests. They are observed as the extension of the main sequence stars, beyond the turn-off point. READ MORE