Sökning: "galaxy morphology"
Visar resultat 1 - 5 av 11 avhandlingar innehållade orden galaxy morphology.
1. The spatial distribution of Lyman alpha from star-forming galaxies in the low redshift Universe
Sammanfattning : The Lyman alpha (Lyα) emission line from the recombination of hydrogen atoms is predicted to be the strongest spectral feature of galaxies. This emission line is regularly used to detect and characterise high redshift galaxies. However, studying this spectral line is challenging. LÄS MER
2. Quasar host galaxies at intermediate and high redshifts
Sammanfattning : Quasars form one of the most energetic phenomena in the universe, and can be traced out to very large redshifts. By studying the galaxies which host the active nuclei, important insights can be gained into the processes that trigger and maintain the quasar powerhouse. LÄS MER
3. Where stars are born : Kinematics and photometry of starburst and postburst galaxies
Sammanfattning : The understanding of the formation and evolution of galaxies will not be complete until we understand the physical processes that trigger and regulate starformation in them. This work is about star formation on several size scales. LÄS MER
4. Molecular gas and ionizing radiation in star-forming galaxies
Sammanfattning : In cosmic history, some of the major changes such as reionization were driven by baryons (i.e. the stars and gas in galaxies), despite the fact that they contribute only few percent to the total mass-energy budget in the Universe. LÄS MER
5. The Kinematics of Blue Compact Galaxies - Gas and Stars
Sammanfattning : Blue Compact Galaxies (BCGs) are intensely star forming, gas-rich systems and their light is dominated by a young stellar population and nebular emission. Their irregular morphology suggests dwarf galaxy mergers as cause for the onset of the burst in star formation. LÄS MER