Sökning: "Galaxy"
Visar resultat 21 - 25 av 150 avhandlingar innehållade ordet Galaxy.
21. Star clusters as engines of galaxy evolution
Sammanfattning : Stars form and live in hierarchical structures such as star clusters on the smallest scales up to groups of galaxies on the largest scales. The role of young and massive star clusters in the evolution of the host galaxies is one of the most active fields of research in modern astronomy. LÄS MER
22. Star clusters as engines of galaxy evolution
Sammanfattning : Feedback in star forming galaxies is the key process that regulates how many stars form given the available gas reservoir. The radiation, energy and momentum released by the stellar activity and the active galactic nuclei change the physical properties of the gas in the galaxy such as the ionisation state, the density and the kinematics. LÄS MER
23. A study of the Hercules dwarf spheroidal galaxy
Sammanfattning : Parts of large spiral galaxies, such as the Milky Way and Andromeda, are believed to have formed from the accretion of several smaller galaxies. Remnants of this chaotic merging era, such as dwarf spheroidal (dSph) galaxies, are visible in the outskirts of large galaxies. LÄS MER
24. An ALMA perspective on high-redshift galaxy evolution
Sammanfattning : The processes governing the growth and evolution of high-redshift massive galaxies have long been a subject of intense investigations. Studies of the cosmic star-formation rate density have shown a peak at z ∼ 2 − 3, demonstrating the distinct need to understand the mechanisms by which galaxies acquired the fuel necessary to ignite such intense star formation. LÄS MER
25. Seyfert-galaxen NGC 7469 : studier av dess aktiva kärna
Sammanfattning : An investigation of the nuclear region in the type 1 Seyfert galaxy NGC 7469 has been made. Optical and ultraviolet spectra obtained for this project have been used, as well as additional ultraviolet spectra and various data from the literature. LÄS MER
